Buyers Guide Oil Insulated Outdoor Instrument Transformers Ed 7 En

Oil insulated Outdoor Instrument Transformers Buyer’s GuideTable of content Page Products Introduction Explanations Silicone Rubber (SIR) Insulators Design features and Advantages Current transformers IMB Inductive voltage transformers EMF Capacitor voltage transformers CPB Coupling capacitors CCB 3 4 7 8 10 12 14 Technical information Technical catalogues: Current transformers IMB Inductive voltage transformers EMF Capacitor voltage transformers CPB Coupling capacitors CCB Optional PQSensor™ Cable entry kits - Roxtec CF 16 Quality, control and testing Inquiry and ordering data 60 64 66 68 17 33 41 53 2 Outdoor Instrument Transformers | Buyer’s Guide Day after day, all year around— with ABB Instrument Transformers ABB has been producing instrument transformers for more than 70 years. Thousands of our products perform vital functions in electric power networks around the world – day after day, all year round. Their main applications include revenue metering, control, indication and relay protection. All instrument transformers supplied by ABB are tailormade to meet the needs of our customers. An instrument transformer must be capable of withstanding very high stresses in all climatic conditions. We design and manufacture our products for a service life of at least 30 years. Actually, most last even longer. Product range Current Transformer IMB Hairpin/Tank type Paper, mineral oil insulation, quartz filling Inductive Voltage Transformer EMF Paper, mineral oil insulation, quartz filling Capacitor Voltage Transformer CPB CVD: Mixed dielectric polypropylene-film and synthetic oil. EMU: Paper, mineral oil Coupling Capacitors CCB Mixed dielectric polypropylene-film and synthetic oil. Type IMB 36 - 800 Highest voltage for equipment (kV) 36 - 800 EMF 52 - 170 52 - 170 CPB 72 - 800 72.5 - 800 CCB 72 - 800 72.5 - 800 We are flexible and tailor make each instrument transformer to our customers needs. Sizes other than those mentioned above can be supplied upon request. Buyer’s Guide | Outdoor Instrument Transformers 3 are sometimes categorized in pollution levels. Internal insulation is not affected by installation altitude and dielectric routine tests will be performed at the rated insulation levels. The Rated Power Frequency Withstand voltage indicates the required withstand voltage.Phase voltage mm/kV 16 20 25 31 Wind load The specified wind loads for instrument transformers intended for outdoor normal conditions are based on a wind speed of 34 m/s.Ground voltage mm/kV a . Installation altitude If installed >1000 m above sea level.7 43. expressed in kV rms. Standard frequencies are 50 Hz and 60 Hz. the external dielectric strength is reduced due to the lower density of the air. please enclose a copy of your specifications with the inquiry. indicates the required withstand level phase-to-earth (phase-to-ground). When in doubt.7 Creepage distance (Old) Phase .Heavy e . Pollution level Environmental conditions. The wave shape 250/2500 µs simulates switching over-voltage. Pollution level Creepage distance Phase . A correction factor is introduced for higher altitudes.3 53. between phases and across open contacts. Rated insulation level The combination of voltage values which characterize the insulation of an instrument transformer with regard to its capability to withstand dielectric stresses.Explanations Technical specifications . Rated Power Frequency Withstand Voltage This test is to show that the apparatus can withstand the power frequency over-voltages that can occur. of the system for which the equipment is intended. ABB will make the needed correction when an altitude higher than 1000 meters ASL is specified.Light c . The rated Switching Impulse Withstand Level (SIWL) indicates the required withstand level phase-to-earth (phaseto-ground).Very light b . Five pollution levels are described in IEC 60815-1.General Standard/Customer specification There are international and national standards. ABB High Voltage Products can meet most requirements. as long as we are aware of them. The value is expressed in kV rms.Very Heavy 22. System voltage The system voltage is the maximum voltage (phase-phase). with respect to pollution. Creepage distance The creepage distance is defined as the shortest distance along the surface of an insulator between high voltage and ground.Medium d . Ambient temperature Average 24 hours ambient temperature above the standardized +35 °C influences the thermal design of the transformers and must therefore be specified.0 27. It is also known as maximum system voltage. The rated value given is valid for altitudes ≤1000 m above sea level. Always specify the installation altitude and normal rated insulation levels. such as 16 2/3 Hz and 25 Hz might be applicable for some railway applications. The value is expressed in kV as a peak value. 4 Explanations | Buyer’s Guide . Phase-to-earth The rated chopped wave impulse withstand level at 2 μs and 3 μs respectively. Rated frequency The rated (power) frequency is the nominal frequency of the system expressed in Hz.2/50 µs – for simulation of lightning overvoltage. as well as customer specifications. There is a relation between each pollution level and a corresponding minimum nominal specific creepage distance. Lightning impulse test The lightning impulse test is performed with a standardized wave shape – 1. Other frequencies. Rated SIWL For voltages ≥300 kV the power-frequency voltage test is partly replaced by the switching impulse test. Rated Chopped Wave Impulse Withstand voltage.8 34. The required creepage distance is specified by the user in: − − mm (total creepage distance) − − mm/kV (creepage distance in relation to the highest system voltage). which the instrument transformer is designed to operate in. Rated dynamic current (I dyn) The dynamic short-time current is according to IEC. PX. For protection cores the class is normally 5P or 10P. 1 A gives an overall lower burden requirement through lower cable burden. which is taken up at rated secondary current. class PR. Both FS and ALF are valid at rated burden only. The load capacity drops as the ampere-turns decrease on the taps. I th depends on the short-circuit power of the grid and can be calculated from the formula: I th = Pk (MW) / Um (kV) x √ 3 kA.40% higher than the estimated operating current. Buyer’s Guide | Explanations 5 . Secondary reconnection Extra secondary terminals (taps) are taken out from the secondary winding. FS10 is normally sufficient for modern meters. Rct The secondary winding resistance at 75 °C Instrument Security Factor (FS) To protect meters and instruments from being damaged by high currents. Accuracy The accuracy class for measuring cores is according to the IEC standard given as 0.0 depending on the application. ALF = 10 or 20 is commonly used. 0. Idyn = 2. Note that the accuracy for the measuring core. 150 and 200% of rated current. the rated continuous thermal current shall be the rated primary current. Unnecessarily high burdens are often specified for modern equipment. Idyn = 2. The maximum continuous thermal current is based on average 24 h ambient temperature of +35 °C.2S. More detailed information about standards other than IEC can be found in our Application Guide. Outdoor Instrument Transformers. Extended current ratings A factor that multiplied by the rated current gives the maximum continuous load current and the limit for accuracy. nominal current or rated continuous current) is the maximum continuous current the equipment is allowed to carry. Closest standardized value should be chosen. The current is expressed in A rms. etc. TPS. Each core can be individually reconnected.7 x Ith Reconnection The current transformer can be designed with either primary or secondary reconnection or a combination of both to obtain more current ratios.2. such as ANSI. Primary reconnection is available for currents in relation 2:1 or 4:2:1. Primary reconnection The ampere-turns always remain the same and thereby the load capacity (burden) remains the same. can be outside the class limit if the actual burden is below 25% of the rated burden. Rated short-time thermal current (Ith) The rated short-time withstand current is the maximum current (expressed in kA rms) which the equipment shall be able to carry for a specified time duration. Unless otherwise specified. 0. This means that the secondary current will increase maximum 5 or 10 times when the rated burden is connected.g.5. It should be selected about 10 . The overcurrent factor for protection cores is called ALF.Current transformers Currents The rated currents are the values of primary and secondary currents on which performance is based. If lower burden the FS and ALF will increase. It is important to determine the power consumption of connected meters and relays including the cables. Accuracy Limit Factor (ALF) The protection cores must be able to reproduce the fault current without being saturated. Standard values for duration are 1 or 3 s. Rated primary current The rated current (sometimes referred to as rated current. Rated secondary current The standard values are 1. but the short-circuit capacity remains constant. according to IEC. Standard values of extended primary current are 120. 2 and 5 A. Burden and Accuracy Class (IEC) Burden The external impedance in the secondary circuit in ohms at the specified power factor. Burden and Accuracy Class for other standards. The short-circuit capacity however may be reduced for the lower ratios.5 x Ith and according to IEEE. It is usually expressed as the apparent power – in VA -. 0. e. IEEE. TPX or TPY. Catalog Publication 1HSM 9543 40-00en or in the actual standard.5S or 1. Other classes are quoted on request. an FS factor of 5 or 10 is often specified for measuring cores. Three-phase. for example. Additional for Capacitor Voltage Transformers (CVT) and Capacitor Voltage Divider (CVD) Capacitance phase . More information regarding instrument transformers More detailed information about instrument transformers can be found in our Application Guide. Higher capacitance => Smaller impedance for signal. PLC = Power Line Carrier. The ABB line matching unit can be adjusted to any capacitance within frequency range 50-500 kHz.ground Requirements for capacitance values can be applicable when using the CVT for communication over lines (for relay functions or remote control).3-1. 0. Another example of ferroresonance occurring is when an inductive voltage transformer is connected in parallel with a large grading capacitor across the gap of a circuit breaker.92.9 x rated voltage). The transformer cannot be subjected to a higher limit burden without being loaded higher than the rated burden.0 depending on the application.2 continuously and simultaneously 1. and 1.5 or 1. Secondary reconnection means that extra secondary terminals (taps) are taken out from the secondary winding(s). A protection winding connected in open delta is not considered as a simultaneous load.Explanations Voltage transformers Voltages The rated voltages are the values of primary and secondary voltages on which the performance is based. This means that at a voltage factor of 1. which is taken up at the rated secondary voltage.2. according to IEC.2 x rated voltage and for protection windings up to the voltage factor (1. it is unnecessary to specify a higher thermal limit burden. Reconnection The voltage transformer can be designed with secondary reconnection. Thermal limit burden Thermal limit burden is the total power the transformer can supply without excessively high temperature rise. single-phase switching. Voltage drop The voltage drop in an external secondary circuit (cables and fuses) can have a significantly larger influence on the system ratio error than incorrect burden. A rated burden of around 1. can withstand and reproduce the continuous fault overvoltages that can occur in the net. For protection purposes the class is normally 3P or 6P Simultaneous burden (IEC) Metering windings and protection windings not connected in open delta are considered as simultaneously loaded. Voltage factor (FV) It is important that the voltage transformer. It is usually expressed as the apparent power – in VA -. for measuring windings is fulfilled between 0. Accuracy.8 and 1. blown fuses. The transformer is engineered so that it can be loaded with the impedance corresponding to the load at rated voltage. because of loading considerations. Consequently. according to IEC. The overvoltage factor is abbreviated as F V. and broken conductors can result in overvoltage when ferroresonance occurs between the magnetizing impedance of a transformer and the system capacitance of the isolated phase or phases. For example. for systems with effective grounding with automatic fault tripping.5/30 sec. (See Current Transformers above). The IEC standard specifies a voltage factor of 1. is given as 0. Burden and accuracy class Burden The external impedance in the secondary circuit in ohms at the specified power factor.5 or 1. Catalog Publication 1HSM 9543 40-00en 6 Explanations | Buyer’s Guide .9/8h. for thermal and protection reasons.5 times the connected burden will give maximum accuracy at the connected burden. the limit burden = total rated burden x 1. the capacitance could be as simple as a length of cable connected to the ungrounded winding of a transformer.9/8 hrs for systems with insulated neutral point without automatic ground fault systems. multiplied by the square of the voltage factor. Outdoor Instrument Transformers. Ferroresonance is usually known as a series resonance. The accuracy class for measuring windings. Ferroresonance Ferroresonance is a potential source of transient overvoltage. The lower applied frequency decide the minimum capacitance of coupling capacitor. Listed below are some of the advantages of silicone rubber insulators compared to porcelain: −− −− −− −− −− −− −− −− Non-brittle Minimum risk for handling and transport damages Minimum risk for vandalism Light-weight Explosion safety Excellent pollution performance Minimum maintenance in polluted areas Hydrophobic There are several polymeric insulator materials available.800 kV CCB 72 .800 kV ABB manufacturing technique The patented helical extrusion moulded silicone rubber insulators without joints (chemical bonds between spirals) minimizes electrical field concentrations and reduces build-up of contamination. and has gained considerable experience thereof. CT VT CVT CC IMB 36 . Tests performed: − − Accelerated ageing test (1000 h) − − Lightning impulse test. but one of the disadvantages with porcelain is its fragility. from marine climate to desert and/or polluted industrial areas. Deliveries ABB in Ludvika has supplied instrument transformers with (SIR) insulators for the most severe conditions. Buyer’s Guide | Outdoor Instrument Transformers 7 . starting with surge arresters.170 kV CPB 72 . Completed tests The silicone material used for ABB Instrument Transformers is approved according to IEC and ANSI/IEEE standards. wet power frequency test and wet switching impulse test − − Short circuit test − − Temperature rise test Color The (SIR) insulators for the instrument transformers are supplied in a light gray color. Why Silicone Rubber Insulators? Ceramic (porcelain) insulators have performed well for several decades. A reference list can be provided on request.800 kV EMF 52 . Comparison of polymeric insulators Epoxy Brittle Insulation Weight Mechanical strength Safety Earthquake Handling Maintenance Ageing UV-resistance Low Fair Good Excellent Good Good Good Fair Fair Good EP-rubber Excellent Good Excellent Good Good Excellent Excellent Fair Good Good Silicone Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Excellent Experience of material ABB has used silicone rubber (SIR) insulators since 1985. of which silicone has proven to be superior. The cross-laminated fiberglass tube inside the insulator provides high mechanical strength.Silicone Rubber Insulators Wide range of instrument transformers with silicone rubber (SIR) insulators ABB can supply most of our instrument transformers with patented helical extrusion-moulded silicone rubber insulation. evenly distributed around the whole periphery of the core. ratio 5/5 A) Cores and secondary windings The IMB type current transformers are flexible and can normally accommodate any core configuration required. The protection cores are made of high-grade oriented steel strip. The insulator. After assembly all free space in the transformer (approx. This is used when the primary current is low. The tap can also be used for voltage indication. An advantage of the capacitive terminal is that it can be used for checking the condition of the insulation through dielectric loss angle (tan delta) measurement without disconnecting the primary terminals.IMB Design features and advantages ABB’s oil minimum current transformers type IMB is based on a hairpin design (shape of the primary conductor) also known as tank type. mounted above the transformer tank. Special design solutions to meet other standards and/or specifications are also available. On request – Capacitive voltage tap The capacitive layers in the high voltage insulation can be utilized as a capacitive voltage divider. The unique filling with quartz grains saturated in oil gives a resistant insulation in a compact design where the quantity of oil is kept to a minimum The IMB transformer has a very flexible design that. depending on the IMB tank design). Expansion system The IMB has an expansion vessel placed on top of the insulator. (Ex. Primary winding The primary winding consists of one or more parallel conductor of aluminum or copper designed as a U-shaped bushing with voltage grading capacitor layers. synchronizing or similar purpose. but the output is limited by the low capacitance of the layers. is used in the IMB as the standard design. The basic design has been used by ABB for more than 70 years. The load connected must be less than 10 kohms and the tap must be grounded when not in use. for example. for instance unbalance protection in capacitor banks. low dielectric losses and good resistance to ageing. The insulation technique is automated to give a simple and controlled wrapping. which improves quality and minimizes variations. The sealing system consists of O-ring gaskets. Designs using light gray porcelain or silicon rubber can be quoted on request. The secondary winding consists of double enamelled copper wire. consists as standard of high-grade brown-glazed porcelain. with a nitrogen cushion compressed by thermal expansion of the oil. Cores for metering purposes are usually made of nickel alloy.123 is provided with a DDF (Dielectric Dissipation Factor) terminal in the secondary terminal box. Protection cores with air gaps can be supplied for special applications. The terminal must be connected to ground during normal service. This design is also very suitable for primary windings with many primary turns. allows large and/or many cores. A tap is brought out from the second to last capacitor layer through a bushing on the transformer tank (in the terminal box or in a separate box. The transformer is always delivered oil-filled and hermetically sealed. A hermetically sealed expansion system. with more than 170 000 units delivered. The design corresponds with the demands of both the IEC and IEEE standards. One model of IMB 72 . which features low losses (= high accuracy) and low saturation levels. An expansion system with stainless steel expansion bellows can be quoted on request. The conductor is insulated with a special paper with high mechanical and dielectric strength. but can be disconnected from ground and used for checking the dielectric dissipation factor of the internal high voltage insulation between primary terminals and ground 8 Outdoor Instrument Transformers | Buyer’s Guide . Tank and Insulator The lower section of the transformer consists of an aluminum tank in which the secondary windings and cores are mounted. The assembled transformer is vacuumtreated and impregnated with degassed mineral oil. Impregnation Heating in a vacuum dries the windings. The leakage reactance in the winding and also between extra tapping is therefore negligible. 60%) is filled with clean and dry quartz grain. The IMB and its predecessors have since the 1930s been supplied in more than 170 000 units. IMB >170 kV can be delivered with a protective painting. An expansion system with gas-filled stainless steel expansion units surrounded by the oil and compressed by oil expansion can be quoted on request. with a nitrogen gas cushion. It can easily be adapted for large and/or many cores by increasing the volume of the tank. without the need of extra protection. For higher rated currents an expansion vessel with external cooling fins is used to increase the cooling area and heat dissipation to the surrounding air. 2 3 4 5 6 Buyer’s Guide | Outdoor Instrument Transformers 9 . Service life The IMB transformer is hermetically sealed and the low and even voltage stress in the primary insulation gives a reliable product with expected service life of more than 30 years. from polar to desert climates all over the world. increases operating reliability and minimizes the need of maintenance and inspections. for use in extreme environments. Flexibility The IMB covers a wide range of primary currents up to 4 000  A.Climate The transformers are designed for. Anodized parts for IMB 36-170 kV can be offered on request. widely shifting conditions. Expansion system The expansion system. designed to withstand high demands of seismic acceleration without the need of dampers. This type of expansion system can be used in the IMB since the quartz filling reduces the oil volume and a relatively large gas volume minimizes pressure variations. 1 1 8 9 2 10 3 4 5 6 7 11 Current Transformer IMB Gas cushion Oil filling unit (hidden) Quartz filling Paper-insulated primary conductor Cores/secondary windings Secondary terminal box 7 8 9 10 11 Capacitive voltage tap (on request) Expansion vessel Oil sight glass Primary terminal Ground terminal Seismic strength The IMB has a mechanically robust construction. Quartz filling Minimizes the quantity of oil and provides a mechanical support for the cores and primary winding during transport and in the event of a short-circuit. and are installed in. Resistance to corrosion The selected aluminum alloys give a high degree of resistance to corrosion. R S T A a da N n dn A a da N n dn A a da N n dn 60 ohm. brown glazed porcelain. Ferro-resonance The design of the EMF notably counteracts the occurrence of ferro-resonance phenomena: − − The low flux in the core at the operating voltage gives a large safety margin against saturation if ferro-resonance oscillations should occur. The assembled transformer is vacuum-treated and impregnated with degassed mineral oil. See the figure below. Expansion system The EMF has an expansion vessel placed on the top section of the porcelain. 200 W Damping of ferro-resonance 10 Outdoor Instrument Transformers | Buyer’s Guide . Primary windings The primary winding is designed as a multi-layer coil of double enamelled wire with layer insulation of special paper. on a delta connected tertiary winding. The EMF has a closed expansion system. as a further safety precaution. The design corresponds with the requirements in the IEC and IEEE standards. and the use of a relatively large gas volume. A prerequisite for this is that the quartz sand filling reduces the oil volume. After assembly. it can. The core is over-dimensioned with a very low flux at operating voltage. but other configurations are available as required. Tank and insulator EMF 52-170: The lower section of the transformer consists of an aluminum tank in which the winding and core are placed. that is compressed by the expansion of the oil. The sealing system consists of O-ring gaskets. The transformers are designed with a low flux density in the core and can often be dimensioned for 190% of the rated voltage for more than 8 hours. which results in an effective attenuation of the ferro-resonance. The tank consists of selected aluminum alloys that give a high degree of resistance to corrosion. The transformer is always delivered oil-filled and hermetically sealed. Secondary and tertiary windings In its standard design the transformer has a secondary measurement winding and a tertiary winding for ground fault protection. to give a flat magnetization curve. Both ends of the windings are connected to metal shields. If the EMF transformer will be installed in a network with a high risk for ferro-resonance. The windings can be equipped with additional terminals for other ratios (taps). Special design solutions to meet other standards and customer requirements are also possible. Anodized aluminum can be offered on request. without the need of extra protection. which gives small pressure variations in the system. all free space in the transformer (approximately 60%) is filled with clean and dry quartz grains. without moving parts and with a nitrogen cushion. be equipped with an extra damping burden. Core The transformer has a core of carefully selected material. The insulator. consists of high quality. Impregnation Heating in a vacuum dries the windings. − − The flat magnetization curve gives a smooth increase of core losses.EMF Design features and advantages ABB’s inductive voltage transformers are intended for connection between phase and ground in networks with insulated or direct-grounded neutral points. (2 secondary windings in a design according to IEEE standard) The windings are designed with double enamelled wire and are insulated from the core and the primary winding with pressboard (presspahn) and paper. in its standard design. The voltage transformers can also be supplied with silicone rubber insulators. from polar to desert climates all over the world. 1 9 2 3 4 5 10 1 2 3 4 5 6 7 8 Primary terminal Oil level sight glass Oil Quartz filling Insulator Lifting lug Secondary terminal box Neutral end terminal 9 10 11 12 13 14 15 16 Expansion system Paper insulation Tank Primary winding Secondary windings Core Secondary terminals Ground connection 6 11 12 13 7 8 14 15 16 Voltage transformer EMF 145 Buyer’s Guide | Outdoor Instrument Transformers 11 .Climate These transformers are designed for. Resistance to corrosion EMF 52-170: The selected aluminum alloys give a high degree of resistance to corrosion without the need of extra protection. and are installed in a wide range of shifting conditions. Service Life The low and even voltage stresses in the primary winding give a reliable product with a long service life. EMF and its predecessors have been supplied in more than 60 000 units since the 1940s. Expansion system The expansion system based on the nitrogen cushion gives superior operating reliability and minimizes the need of maintenance and inspection of the transformer. Seismic strength EMF is designed to withstand the high demands of seismic acceleration. Quartz filling Minimizes the quantity of oil and provides a mechanical support to the cores and primary winding. Anodized aluminum can be offered on request. measurement of harmonics. The primary winding is divided into a main part. with the active component of aluminum foils insulated with polypropylene film and paper and impregnated with PCB free synthetic oil. The high quality. The synthetic oil has superior and consistent insulating properties when compared to mineral oil. medium and heavy. 12 Outdoor Instrument Transformers | Buyer’s Guide . This special cost effective combination is in this document designated CPB(L). The nominal intermediate voltage is approximately 22/√ 3 kV. light. oilinsulated capacitor elements. CPB portfolio features The portfolio consists of three versions of Capacitor Voltage Dividers (CVDs). assembled on top of each other. The EMU has double-enamelled copper windings and an iron core assembled with high quality magnetic core steel and is oil impregnated and mounted in a hermetically sealed aluminum tank with mineral oil filling. The design of the capacitive elements is consistent with requirements of revenue metering. with each unit containing the required number of series-connected. and a set of externally adjustable connected trimming windings. the capacitor elements are subject to low electrical stress with high stability under extreme temperature variations. For special applications.CPB Design features and advantages ABB’s Capacitor Voltage Transformers (CVTs) are intended for connection between phase and ground in networks with isolated or grounded neutral. For this special type of EMU the function of the compensating reactor and primary winding of the intermediate transformer are combined into one device. connected in series between the voltage divider and the high voltage end of the primary winding to compensate for the shift in phase angle caused by the capacitive reactance of the CVD. This inductive reactance is tuned individually on each transformer to achieve the required accuracy. Capacitor Voltage Divider The capacitor voltage divider (CVD) consists of one or more capacitor units. The EMU incorporates an inductive reactor. ABB offers a world-class CVT with superior ferro-resonance suppression and transient response. automated manufacture of the capacitor elements provides consistent quality to ensure long term reliability and performance. The automated processing of the capacitor units further contributes to the long term high reliability and performance of the CPB. etc an alternative EMU is available without a separate compensating reactor. This arrangement gives additional advantages such as a wider frequency operating range and further improvement in the transient response. This special type of EMU is limited to lower burden requirements. The two sizes of EMU comprise a medium size optimized in respect to market requirements for number of windings and performance. hermetically sealed with stainless steel bellows and incorporate o-ring seals throughout the design. Electromagnetic Unit (EMU) The voltage divider and the electromagnetic unit are connected by internal bushings. such as HVDC stations. Due to the optimized proportions of the mixed dielectric. which is necessary for applications with high accuracy. The light capacitance CVD is manufactured up to 245 kV and can only be incorporated with the lightweight EMU. A lighter EMU is available where customers have lower burden requirements. state of the art. The design corresponds to the requirements of IEC and all national standards based upon them. combined with two sizes of Electromagnetic Units (EMU). Special designs to meet other standards and customer unique specifications are also available. The units are completely filled with synthetic oil. which is the most stringent requirement in the IEC standard for carrier properties.Climate These transformers are designed for. Stray capacitance The design with the compensating reactor on the high voltage side of the main winding ensures less than 200 pF stray capacitance. The higher this factor. Transient properties The high intermediate voltage and high capacitance result in good transient properties. Life time The low voltage stress within the capacitor elements ensures a safe product with an expected service life of more than 30 years. from arctic to desert climates. and the better the transient response. flat 4-hole Al-pad Low voltage terminal (for carrier frequency use) 8 1 2 10 9 4 6 11 7 3 5 12 Electromagnetic unit 4 5 6 7 9 11 12 Oil level glass Compensating reactor Ferro-resonance damping circuit Primary and secondary windings Gas cushion Secondary terminal box Core Buyer’s Guide | Outdoor Instrument Transformers 13 . automated manufacture and processing of the capacitor elements and units. on every continent. see page 40. Adjustment The adjustment windings for ratio adjustment are accessible in the terminal box. Power Line Carrier (PLC) The CPB is designed with the compensating reactor connected on the high voltage side of the primary winding. Ferro-resonance The low induction. under a sealed cover. The long term reliability and performance is further ensured by the state of the art. Stability The CPB has a high Quality Factor as a result of the comparatively high capacitance combined with the high intermediate voltage. gives a safe and stable damping of ferro-resonance at all frequencies and voltages up to the rated voltage factor. The Quality Factor = Cequivalent x U2intermediate is a measure of the accuracy stability and the transient response. and are installed in widely varying conditions. the better the accuracy. providing the option of using higher frequencies (> 400 kHz) for power line carrier transmission. Capacitor Voltage Divider 1 2 3 8 10 Expansion system Capacitor elements Intermediate voltage bushing Primary terminal. combined with an efficient damping circuit. 9/8 hrs although this is not required by the IEC coupling capacitor standard.g. impregnated by a PCB-free synthetic oil which has better insulating properties than mineral oil and is a perfect matching for the mixed dielectric. The units are completely filled with synthetic oil. medium and heavy. described below. Each unit contains a large number of series-connected. Application ABB offers a world-class coupling capacitor with superior properties for PLC application as well as filtering and other general capacitor applications. The automated processing of the capacitor units further contributes to the long term high reliability and performance of the CCB. full film capacitors. oil-insulated capacitor elements. Due to its proportions between paper and polypropylene film this dielectric has proven itself much more insensitive to temperature changes in contradiction to e. Special designs to meet other standards and customer specifications are also available. Capacitor design The coupling capacitor consists of one up to four capacitor units. insulated with paper/polypropylene film. light. assembled on top of each other. 14 Outdoor Instrument Transformers | Buyer’s Guide . the coupling capacitor elements are combining both low voltage stress and high stability to temperature variations. The design corresponds to the requirements of IEC 60358-1 and all national standards based on this standard. of which the light capacitance CC is manufactured up to 245 kV. Due to the design of the capacitor units.CCB Design features and advantages ABB’s coupling capacitors are intended for connection between phase and ground in networks with isolated or grounded neutral. CCB portfolio features The portfolio consists of three versions of coupling capacitors (CCs). The capacitor insulators and elements are designed with respect to the same demands as for the capacitor part of revenue metering CVT and thus also share the same conservative design philosophy. This conservative philosophy results in a design with low voltage stress that makes the coupling capacitors capable of handling a voltage factor up to 1. ABB’s coupling capacitors (designated CCB) are intended for connection between phase and ground in high voltage networks with isolated or grounded neutral. Their active component consists of aluminum foil. hermetically sealed with stainless steel bellows and incorporated o-ring seals are used throughout the design. Life time The low voltage stress within the capacitor elements ensures a safe product with an expected service life of more than 30 years. the light capacitance CCB 72 . 1 2 3 Coupling Capacitor CCB 1 2 3 4 5 6 Primary terminal. on every continent. Power Line Carrier (PLC) The CCB are designed for use within the entire power line carrier transmission frequency range from 30 kHz to 500 kHz. from arctic to desert climates.Climate These coupling capacitors are designed for being installed in widely varying conditions. flat 4-hole Al-pad Expansion system Capacitor elements Rating plate (For low capacitance CCB 72-245 it’s placed on the expansion cover) L.245 is not designed for line trap on the top.(low voltage) terminal / Ground clamp Support Insulators (mainly for PLC use) 4 5 6 Buyer’s Guide | Outdoor Instrument Transformers 15 . However. 16 Outdoor Instrument Transformers | Buyer’s Guide . Brief performance data Installation Design Insulation Highest voltage for equipment Max primary current Short-circuit current Insulators Outdoor Tank (Hairpin) type Oil-paper-quartz 36 . the oil-paper insulated current transformer IMB is the most sold transformer in the world.IMB 36-800 kV Tank type current transformer For revenue metering and protection in high voltage networks.800 kV Up to 4 000 A Up to 63 kA/1 sec Porcelain On request silicon rubber (SIR) Creepage distance ≥ 25 mm/kV (Longer on request) Service conditions Ambient temperature -40 °C to +40 °C (Others on request) Design altitude Maximum 1000 m (Others on request) Buyer’s Guide | Outdoor Instrument Transformers 17 . − − Designed for widely shifting conditions. Due to the low center of gravity the IMB is very suitable for areas with high seismic activity. From international studies we can see that the IMB design is a reliable product (failure rate more than 4 times lower than average) with no need for regular maintenance. from polar to desert climate − − Flexible tank type design allows large and/or many cores The unique quartz filling minimizes the quantity of oil and provides a mechanical support to the cores and primary winding. We can. The transformer(s) must be stored on a flat and stable surface with a suitable load capacity. Oil sampling This is normally done through the oil-filling terminal. etc. HV Components) can offer other solutions and equipment for oil sampling. If required. the terminal box must be checked for condensation and penetrating moisture. the transformer must be stored indoors or under roof. Make sure that the transformer(s) is put in vertical position at least 48 h prior to energizing (96 h for 800 kV). If horizontal transport is required this must be stated on the order. appropriate measures must be taken. Static force on primary terminal may be up to 6 000 N in any direction. Rating plates Rating plates of stainless steel with engraved text and the wiring diagram are mounted on the cover of the terminal box. The IMB 170 . resistant to most known environment factors. Oil residue in the quartz can be burnt. be used as landfill. nuts. Transport . The porcelain can. Normally it is sufficient to check the oil level and that no oil leakage has occurred. The IMB will also withstand most cases of seismic stress. A more detailed check is recommended after 20-25 years of service. Tightening of the primary connections should be checked occasionally to avoid overheating. up to five years. offer anodized aluminum or a protective paint. In the event of damage to the goods. Measurements of the dielectric losses of the insulation (tan delta-measurement) and/or oil sampling for dissolved gas analysis are recommended check methods. as IMB is hermetically sealed and designed for a service life of more than 30 years. if available. This applies for storage of up to two years. This gives further guarantees for continued problem-free operation. Bolts. Before long-term storage. ensure that all contact surfaces are thoroughly cleaned. under unfavorable climatic conditions. A manual for conditional monitoring can be supplied on request. Impregnation agent The oil is according to IEC 60296 grade 2 and is free of PCB and other heavily toxic substances and has a low impact on the environment. or providing the terminal box with silica gel or an equivalent drying agent.800 is packed for horizontal transport (1-pack). such as connecting heating elements.145 is normally transported (3-pack) and stored vertically. Maintenance instructions are supplied with each delivery. The transformer must be assembled on a flat surface. The disposal should be carried out in accordance with local regulatory requirements. in its original packaging. The methods and the scope of the checks depend greatly on the local conditions. Creepage distance As standard. contact ABB for advice before further handling of the goods. Mechanical stability The mechanical stability gives sufficient safety margins for normal wind loads and terminal forces. with the risk of oil leakage. the contact surfaces should be protected from corrosion. If the transformer(s) is stored horizontally. For extended storage. Before placing in service. IMB is offered with creepage distance ≥ 25 mm/kV.assembly Please check the packaging and contents with regard to transport damage on arrival. Longer creepage distance can be provided on request. The aluminum surfaces do not normally need painting. the oil-soaked paper insulation should be burnt. and if possible. Disposal After separating the oil and quartz the oil can be burned in an appropriate installation. Any damage should be documented (photographed). . To recycle the aluminum and copper in the windings.storage The IMB 36 . When stored horizontally. however. Maintenance The maintenance requirements are small. 18 Outdoor Instrument Transformers | Buyer’s Guide Arrival inspection . If the transformer is stored protected. The maximum time when stored in its original crate without any protection is six months. after it has been crushed. Assembly instructions are provided with each delivery. we (ABB. For longer storage. are made of acid-proof steel. make sure the building is very well ventilated. An uneven surface can cause misalignment of the transformer.IMB 36-800 kV Tank type current transformer Material All external metal surfaces are made of an aluminum alloy. whereafter the quartz can be deposited. The metals used in the transformer can be recycled. corrosion can occur on secondary terminals and accessories in the terminal box due to drainage not functioning properly in the horizontal position. for conductors 8-16 mm (area: 50-200 mm 2). The terminal box is provided with a drain. such as heater or protective spark gaps. according to IEC 60529. protection class IP 55. depending on type of IMB. can be quoted on request. The ground terminal for the secondary windings is located inside the terminal box. undrilled gland plate. This box is equipped with a detachable. 100 75 Secondary terminal box and secondary terminals The transformer is equipped with a secondary terminal box. which can be moved to either mounting foot. The standard terminal box can accommodate up to 30 (16) terminals of the type Phoenix UK10N for cross section <10 mm2. suitable for IEC and NEMA specifications. Standard for IMB 36-123 (light tank) Standard for IMB 36-800 Ground (earth) terminal The transformer is normally equipped with a ground clamp with a cap of nickel-plated brass. Maximum torsional moment is 1 000 Nm. 80 x 145 x 8 mm. is supplied when needed. Buyer’s Guide | Outdoor Instrument Transformers 19 135 . The bar can be supplied drilled according to IEC or NEMA standards. 50 40 40 20 14 Maximum static and dynamic force on the terminal is up to 6 000 and 8 400 N respectively. A larger terminal box with space for more secondary terminals or other equipment. A stainless steel bar. Other customer specific solutions can be quoted on request. which on installation can be drilled for cable bushings. Other types of terminals can be quoted on request.Primary terminals IMB 36 – 800 is as standard equipped with aluminum bar terminals. 8 108 170 108 85 43 108 170 108 85 45 170 108 170 108 170 1200 2000 720 1440 2400 1200 400 150 IMB 84-123 IMB 84-123 IMB 36-170 IMB 245 IMB 245 2) 3) 1600 2000 1000 300 150 IMB 300-420 IMB 420-550 IMB 800 1) 3) 2500 1200 2500 1200 - 4.5 31.5 12.5 31.5 16 40 63 40 31. 5) HV tank Other types of primary conductors can be supplied on request Maximum continuous primary current = load factor x primary rated current related to a daily mean temperature that does not exceed 35 °C Primary winding can be designed with reconnection alternative between two or three primary rated currents with a ratio of 2:1 or 4:2:1 20 Outdoor Instrument Transformers | Buyer’s Guide .5 16 63 40 63 40 63 Maximum short-time current 3 sec kA 31. Standard tank. 5) 5) 2) Light tank. Octagon tank.5 40 40 18 9 40 63 40 18 9 63 40 40 40 40 Maximum dynamic current kA peak value 108 108 78.IMB 36-800 kV Tank type current transformer Maximum continuous primary current and short-time current Type Normal current A IMB 36-72 IMB 36-72 1) 1) 1) 1) 2) Cooling flanges A 2400 1200 4) Cooler A 3150 1500 2000 3150 1500 3150 1500 4000 2000 4000 Maximum short-time current 1 sec kA 40 40 31. 3) Heavy tank.5 40 63 40 31. 5) IMB 8005) 1) 6) 7) 2) Light tank. Note: Long creepage distance effects dimensions A. 5) IMB 5504. HV tank 25 mm/kV or 29 mm/kV for 123 kV system voltage. 3) IMB 3003) IMB 3623) IMB 420 3) IMB 4204. values) Type Flashover distance mm IMB 361) IMB 36 1) Long creepage distance 31 mm/kV (Min. B. Standard tank. D (see dimensions) Buyer’s Guide | Outdoor Instrument Transformers 21 . 7) IMB 2452. Octagon tank. Heavy tank. 38 mm/kV for 170 kV system voltage and 45 mm/kV for 145 kV system voltage is available.Nominal flashover and creepage distance (Porcelain) Normal creepage distance 25 mm/kV (Min. values) Flashover distance mm 660 635 1005 980 1005 980 1215 1190 630 630 1120 1120 1330 1600 2265 2715 3115 3635 3820 4715 Total creepage distance mm 1813 1813 3075 3160 3075 3160 3625 3880 2248 2248 4495 4495 5270 6525 8490 10430 12480 14325 15280 18944 Protected creepage distance mm 800 762 1300 1307 1300 1307 1600 1634 1020 1020 1860 1860 2200 2740 3685 4645 5630 6465 6870 8340 - Total creepage distance mm 1813 1813 3075 3160 2248 3625 3625 6740 8250 10430 12480 11550 15280 20000 4) 5) Protected creepage distance mm 800 762 1300 1307 1020 1400 1400 2850 3495 4645 5630 4800 6870 8405 660 635 1005 980 630 1120 1120 1915 2265 2715 3115 3215 3820 5520 3) IMB 721) IMB 721) IMB 841) IMB 841) IMB 1231. 6) IMB 1231) IMB 362) IMB 722) IMB 842) IMB 1232) IMB 1452) IMB 1702) IMB 1702. 78 92 108 156 191 230 267 334 486 Max RIV level µV 2500 2500 2500 2500 2500 2500 2500 2500 2500 Test voltages above applies at ≤1000 meters above sea level Test Voltages IEEE C 57.13. 1 minute.5 123 145 170 245 300 362 420 550 800 AC voltage test.2/50 µs kV Max.5 Type Highest system voltage kV IMB 36 IMB 72 IMB 123 IMB 145 IMB 170 IMB 245 IMB 362 IMB 550 IMB 800 1) Power frequency applied voltage test kV 70 140 230 275 325 460 575 800 920 AC-test Wet. RIV test values according to IEEE C 57. 200 350 550 650 750 1050 1300 1800 2050 Chopped impulse kV 230 400 630 750 865 1210 1500 2070 2360 RIV test voltage kV 71 84 98 142 209 303 462 Max RIV level 1) µV 200 200 200 250 250 350 500 36. Test voltages above applies at ≤1000 meters above sea level 22 Outdoor Instrument Transformers | Buyer’s Guide .2/50 μs kV 170 325 550 650 750 1050 1050 1175 1425 1550 2100 Switching impulse 250/2500 μs kV 850 950 1050 1175 1550 RIV test voltage kV Max.IMB 36-800 kV Tank type current transformer Test Voltages IEC 61869-2 Type Highest voltage for equipment (Um) kV IMB 36 IMB 72 IMB 123 IMB 145 IMB 170 IMB 245 IMB 300 IMB 362 IMB 420 IMB 550 IMB 800 36 72. 10 sec kV 70 140 230 275 315 445 - Lightning impulse (BIL) 1.5 123 145 170 245 362 550 800 Test procedure according to IEC.13. wet/dry kV 70/70 140/140 230/230 275/275 325/325 460/460 -/460 -/510 -/630 -/680 -/975 Lightning impulse 1.5 72. Burdens Our current transformer IMB has a very flexible design allowing large burdens. However, it is important to determine the real power consumption of connected meters and relays including the cables. Unnecessary high burdens are often specified for modern equipment. Note that the accuracy for the measuring core, according to IEC, can be outside the class limit if the actual burden is below 25% of the rated burden. Over-voltage protection across primary winding The voltage drop across the primary winding of a current transformer is normally very low. At rated primary current it is only a couple of volts and at short-circuit current a few hundred volts. If a high frequency current or voltage wave passes through the primary winding can, due to the winding inductance, high voltage drops occur. This is not dangerous for a current transformer with a single-turn primary winding, but for multiturn primaries may it lead to dielectric puncture between the primary turns. It is therefore ABB’s practice to protect the primary winding in multi-turn designs with a surge arrester connected in parallel with the primary. Standard design of IMB current transformer is without surge arrester. Surge arrester of type POLIM – C 1.8N will however be included when needed. Standard accuracy Classes. Current transformers of the type IMB are designed to comply with the following accuracy classes. Other classes can be quoted on request. IEC 61869-2 Class 0.2 0.2S 0.5 0.5S 1.0 3.0 5.0 5P 5PR 10P 10PR PX PXR TPS TPX TPY Application Precision revenue metering Precision revenue metering Standard revenue metering Precision revenue metering Industrial grade meters Instruments Instruments Protection Protection Protection Protection Protection Protection Protection Protection Protection IEEE C57.13 / IEEE C57.13.6 Class 0.15 0.15S 0.3 0.6 1.2 C100 C200 C400 C800 X Application Precision revenue metering Precision revenue metering Standard revenue metering Metering Metering Protection Protection Protection Protection Protection Buyer’s Guide | Outdoor Instrument Transformers 23 IMB 36-800 kV Design and shipping data Dimensions A Type Total height mm IMB 36 IMB 36 IMB 72 IMB 72 IMB 84 IMB 84 1) 1) 1) 1) 1) 1) 1) 1) B Height to primary terminal mm 1424 1424 1424 1424 1769 1769 1769 1769 1635 1635 1635 2125 2125 2335 2950 3050 3405 3855 4255 4760 4790 5360 5390 7090 3) C Ground level height mm 611 636 611 636 611 636 611 636 840 840 840 840 840 840 865 965 965 965 965 1365 1390 1365 1390 1390 4) D Flashover distance mm 660 635 660 635 1005 980 1005 980 630 630 630 1120 1120 1330 1915 1915 2265 2715 3115 3215 3215 3820 3820 5520 5) E Length across primary terminal bushing mm 359 359 359 359 359 359 359 359 470 470 470 470 470 470 440 440 490 490 490 490 526 490 526 526 F G Dimension of bottom tank H J Height to K Spacing for terminal box mounting holes mm 395 395 395 395 395 395 395 395 595 595 595 595 595 595 595 750 750 750 750 1040 1105 1040 1105 1105 mm 138 138 138 138 138 138 138 138 110 110 110 110 110 110 110 475 475 475 475 783 805 783 805 805 mm 335 335 335 335 335 335 335 335 410 410 410 410 410 410 410 450 450 450 450 500 600 500 600 600 mm 197.5 197.5 197.5 197.5 197.5 197.5 197.5 197.5 235 235 235 235 235 235 235 270 270 270 270 320 360 320 360 360 mm 279 279 279 279 279 279 279 279 335 335 335 335 335 335 335 370 370 370 370 380 410 380 410 410 1718 1718 1718 1718 2063 2063 2063 2063 2000 2000 2000 2) 2) 2) 2) 3) 3) 3) 3) 4) 5) 4) 5) 5) 2) IMB 123 IMB 123 IMB 36 IMB 72 IMB 84 2) 2) 2) IMB 123 IMB 145 IMB 170 IMB 245 IMB 245 IMB 300 IMB 362 IMB 420 IMB 420 IMB 420 IMB 550 IMB 550 IMB 800 1) 2490 2490 2700 3320 3640 4150 4600 5000 5505 5580 6100 6180 8840 Standard tank, Light tank, Heavy tank, Octagon tank, HV tank 24 Outdoor Instrument Transformers | Buyer’s Guide IMB 36 - 123 IMB 36 - 170 E E D D A A B C J 20 C B G F H K K K F K H G Buyer’s Guide | Outdoor Instrument Transformers 25 K J IMB 36-800 kV Design and shipping data IMB 245 1) IMB 245 E 2) E A D D B A C B C J K H K F K K K H K F G 26 Outdoor Instrument Transformers | Buyer’s Guide G 25 J . IMB 300 .420 E 2) IMB 420 .550 3) E D A B C D J B J C A H F G K 25 K K 30 K K K F G Buyer’s Guide | Outdoor Instrument Transformers 27 H . IMB 36-800 kV Design and shipping data IMB 420 .550 4) E D J C B A 30 K K K F G 28 Outdoor Instrument Transformers | Buyer’s Guide H . IMB 800 4) E D J C B A 30 K K K F G Buyer’s Guide | Outdoor Instrument Transformers 29 H . 8 / 9.2 / 6.65x1.73x0.93 2.74x1.97x0.26 / 4.800 is always packed for horizontal transport in 1-pack.65x1.3 1. special design of dimensions A.94 / 1.6 1.65x1.6x0.420 **) 400 mm for IMB 420 .3 1.145 is normally packed for vertical transport in a 3-pack.71x1.08 / 1.94 / 3.31 / 5.4 / 2.93 1.42 2.0 / 9.26 / 5.79x1.5 / - 200 240 200 240 240 290 240 290 420 420 420 490 490 550 750 1100 1400 1500 1600 2500 2600 2800 3500 4200 2) IMB 36 1) IMB 72 1) IMB 72 1) IMB 84 1) IMB 84 1) IMB 123 1) IMB 123 IMB 36 2) IMB 72 2) IMB 84 2) IMB 123 2) IMB 145 2) IMB 170 2) IMB 245 2) IMB 245 3) 1) IMB 300 3) IMB 362 3) IMB 420 3) IMB 420 4) IMB 420 4) IMB 550 4) IMB 550 5) IMB 800 5) 1) Light tank Standard tank 3) Heavy tank 4) Octagon tank 5) HV tank IMB 36 .73x0.94 / 1.08 / 1.550.08 / 1.73x0.34x1.26 / 4.67x0.06x1.79x2.7 2.79x2.31x0.65x1.73x0.2 / 5.97x0.06x1.5x1.93 1.21 2.97x0.3 1.42 2.26x0.73x0.47 / 6. Additional weights may occur depending on requirements and configuration.67x0. 240 mm for IMB 300 .94 / 1.08 / 1.65x1.42 2.4 / 2.0 / 5.3 / 3 1. 30 Outdoor Instrument Transformers | Buyer’s Guide .3 / 3 1.73x0.91x1.6 1.97x0. C Tank-type Light tank Standard tank Heavy tank Octagon tank HV tank Increased tank height mm 210 210 or 420 150 200 or 400 A Cooling flange mm 210 A Cooler mm 255 35 / 240 * ) 440 400 ** ) A Three primary ratios mm 193 A Horizontal transport mm 10 - *) 35 mm for IMB 245.94 / 1.6 1.67x0.8x2.1x1.6 1.67x0.6 1.08 / 1.96x0.75x0.65x1.93 1. B.73x0.6 1.21 2.0 / 8.06x1.6 / 3.22 / 5.5 / 3.3 / 7.79x2.6x0.3 / 3 1.8x2.79x1.94 / 1.3 1.IMB 36-800 kV Design and shipping data Changes.4 / 2.75x0.67x0.23x1.42 2.6x0.22 / 6.06x1.65x1.26x0.8x2.06x1. IMB 170 .05x1.31x0.73x0.31x0.79x2.7 / 2.8x2.23x1.79x1.79x1.7 2.31x0.26x0.9 / 13.47 / 8.7 / 9.08 / 1.3 / 3. IMB 800 is always equipped with cooler Shipping data for standard IMB Type Net weight incl.42x1.08 / 1.21 2.47 / - Shipping volume 1-pack/3-pack m3 1.65x1.94 / 3. Additional weights Weight indicated in table above is for standard IMB.06x1. Vertical transport in a 1-pack can be quoted on request.82x1.7x1.08 / 1.6x0.4 / 2.8x2. oil kg IMB 36 1) Oil kg 25 26 25 26 27 28 27 28 45 45 45 50 50 55 80 110 170 180 190 300 290 330 510 670 Shipping weight 1-pack/3-pack kg 340 / 730 380 / 850 340 / 730 380 / 850 395 / 870 445 / 1020 395 / 870 445 / 1020 530 / 1350 530 / 1350 530 / 1350 620 / 1580 620 / 1580 700 / 970 / 1460 / 1815 / 1915 / 2050 / 3120 / 3220 / 3480 / 4180 / 6400 / - Shipping dimensions 1-pack/3-pack LxWxH m 1.6 / 3.6x0.6x0.6 / 3.6x0.48x0.5 / 3. The disadvantage is that the short-circuit capability may be reduced for the lower ratio(s). If windings/cores are not used in a current transformer they must be short-circuited between the highest ratio taps (e.S5) and shall be grounded. The advantage of primary reconnection is that the ampereturns remains the same and thereby the output (VA). Primary reconnection Two primary ratios for two turns Two primary ratios. Caution! Never leave an unused secondary winding open. S1 . The IMB type can be delivered in a configuration that permits reconnection either on primary or secondary side. Buyer’s Guide | Outdoor Instrument Transformers 31 . or a combination of the two. Very high-induced voltages are generated across the terminals and both the user and the transformer are subjected to danger.IMB 36-800 kV Reconnection General The current transformer can be reconnected to adapt for varying currents.g. connected for one turn C1 C2 C2 C1 Connection above is for the lower current Connection above is for the higher current Secondary reconnection P1 S1 S2 S3 S4 S5 P2 The unused taps on the reconnectable secondary winding must be left open. 32 Outdoor Instrument Transformers | Buyer’s Guide . − − Low flux in the core at operating voltage gives a wide safety margin against saturation and ferro-resonance. Brief performance data Installation Design Insulation Highest voltage for equipment Voltage factor (Vf) Insulators Outdoor Inductive type Oil-paper-quartz 52 .EMF 52-170 kV Inductive voltage transformer For revenue metering and protection in high voltage networks. − − Designed for widely shifting conditions. the oil-paper insulated voltage transformer EMF is the most sold inductive voltage transformer in the world. The unique quartz filling minimizes the quantity of oil and allows a simple and reliable expansion system.170 kV Up to 1.9/8 hrs Porcelain On request silicon rubber (SIR) Creepage distance ≥ 25 mm/kV (Longer on request) Service conditions Ambient temperature -40 °C to +40 °C (Others on request) Design altitude Maximum 1000 m (Others on request) Buyer’s Guide | Outdoor Instrument Transformers 33 . from polar to desert climate. Maintenance instructions are supplied with each delivery. Arrival inspection . High Voltage Products is at your disposal for discussions and advice. the terminal box must be checked for condensation and penetrating moisture. Maintenance Maintenance requirements are insignificant as EMF is designed for a service life of more than 30 years. whereafter the quartz can be deposited. The maximum time when stored in its original crate without any protection is six months. Disposal After separating the oil and quartz the oil can be burned in an appropriate installation. etc. corrosion can occur on secondary terminals and accessories in the terminal box due to drainage not functioning properly in the horizontal position. An uneven surface can cause misalignment of the transformer. or providing the terminal box with silica gel or an equivalent drying agent. If the transformer is stored protected. before further handling of the goods. 34 Outdoor Instrument Transformers | Buyer’s Guide Make sure that the transformer(s) is put in vertical position at least 48 h prior to energizing.EMF 52-170 kV Inductive voltage transformer Material EMF 52-170: All external metal surfaces are made of an aluminum alloy. If horizontal transport is required this must be stated on the order. The inspection methods and scope very significantly depending on the local conditions. Any damage should be documented (photographed). We can. The porcelain can. Creepage distance EMF is available as standard with normal or long creepage distances according to the table on page 36. The metals used in the transformer can be recycled. Before placing in service. As the primary winding is not capacitive graded. under unfavorable climatic conditions. Rating plates Rating plates of stainless steel. with engraved text and wiring diagrams are mounted on the transformer enclosure. and that no oil leakage has occurred. the contact surfaces should be protected from corrosion. contact ABB for advice.storage The EMF 52-84 is always transported (3-pack) and stored vertically. Normally it is only necessary to check that the oil level is correct. are made of acid-proof steel. The EMF 123-170 is normally transported (3-pack) and stored vertically. Longer creepage distances can be quoted on request. the transformer must be stored indoors or under roof. Bolts. When stored horizontally. Transport . and if possible. For longer storage. In the event of damage to the goods. nuts. Oil residue in the quartz can be burnt. Mechanical stability The mechanical stability gives a sufficient safety margin for normal wind loads and stress from conductors. The transformers are hermetically sealed and therefore require no other inspection. with the risk of oil leakage. the measurement of tan-delta gives no significant result. appropriate measures must be taken. after it has been crushed. Impregnation agent The oil is according to IEC 60296 grade 2 and is free of PCB and other heavily toxic substances and has a low impact on the environment. ensure that all contact surfaces are thoroughly cleaned. This applies for storage of up to two years. The transformer(s) must be stored on a flat and stable surface with a suitable load capacity. ABB. make sure the building is very well ventilated. EMF can also withstand high seismic forces.assembly Please check the packaging and contents with regard to transport damage on arrival. To recycle the copper in the windings. resistant to most known environment factors. offer a protective paint or anodized aluminum. The disposal should be carried out in accordance with local regulatory requirements. The transformer must be assembled on a flat surface. A comprehensive inspection is recommended after 30 years. however. in its original packaging. The aluminum surfaces do not normally need painting. If the transformer(s) is stored horizontally (only EMF 123-170). This provides increased safety and continued problem-free operation. Assembly instructions are provided with each delivery. up to five years. if available. the oil-soaked paper insulation should be burnt. Before long-term storage. such as connecting heating elements. Therefore oil sampling for dissolved gas analysis is recommended for checking the insulation. For extended storage. . be used as landfill. suitable for IEC and NEMA specifications. It can. The bar can be supplied drilled according to IEC or NEMA standards. be quoted with cable glands according to the customer’s specification. cast aluminum.Primary terminals EMF 52-170 is as standard equipped with an aluminum bar terminal. Grounding of the secondary circuits is made inside the terminal box. on request. For conductors Ø=5-16 mm (area 20-200 mm 2). EMF 52-170 Secondary terminal box and Secondary terminals The terminal box for the secondary winding terminal is mounted on the transformer enclosure. Withstand dynamic force is 1 400 and 700 N respectively. A stainless steel bar. EMF 52-170: Secondary terminals accept wires with crosssections up to 10 mm 2. EMF 52-84 EMF 123-170 Ground (Earth) connections The transformer is normally equipped with a ground terminal with a clamp of nickel-plated brass. see the figure. according to standards. can be quoted on request. withstand static force of 1 000 N for Um (system voltage) 123 – 170 kV and 500 N for lower voltages. This box is equipped with a detachable. The primary terminal is a voltage terminal and should therefore. 80 x 145 x 8 mm. undrilled gland plate. which on installation can be drilled for cable bushings. The terminal box is provided with a drain. Protection class for the terminal box is IP 55. As standard the terminal box is manufactured of corrosion resistant. EMF 52-84 EMF 123-170 Buyer’s Guide | Outdoor Instrument Transformers 35 . Porcelain with long creepage distance (min.2/50 µs kV Max. values) Flash-over distance mm Creepage distance mm Protected creepage distance mm Test voltages IEC 61869-3.13 (CAN/CSA 60044-2) Type Highest voltage for equipment (Um) kV EMF 52 EMF 72 EMF 123 EMF 145 EMF 170 52 72. values) Type Flash-over distance mm EMF 52 EMF 72 EMF 84 EMF 123 EMF 145 EMF 170 630 630 630 1200 1200 1330 Creepage distance mm 2248 2248 2248 3625 3625 5270 Protected creepage distance mm 1020 1020 1020 1400 1400 2200 Others on request. 1 min kV 95 140 230 275 325 AC test wet.5 121 (123) 145 169 (170) AC test dry. 250 350 550 650 750 Values within brackets refer to CAN/CSA 60044-2.2/50 µs RIV test voltage RIV level Test voltages above are valid for altitudes ≤1000 meters above sea level. Normally insulator for the nearest higher voltage.EMF 52-170 kV Design data Nominal flash-over and creepage distance Normal porcelain (min. 10 sec kV 95 175 230 275 315 (325) BIL 1. 30 46 54 78 92 108 µV 125 125 125 2500 2500 2500 1 min wet/dry LIWL 1.5 84 123 145 170 kV 95 140 150 230 275 325 kV 250 325 380 550 650 750 kV Max. nom. nom. Test voltages IEEE C 57. Test voltages above are valid for altitudes ≤ 1000 meters above sea level. (SS-EN 60044-2) Type Highest voltage for equipment (Um) kV EMF 52 EMF 72 EMF 84 EMF 123 EMF 145 EMF 170 52 72. 36 Outdoor Instrument Transformers | Buyer’s Guide . 9/8 hrs for systems with insulated neutral point without automatic earth fault tripping.3 WXY 0. The standards state as standard values for rated voltage factor 1.2/3P WXYZ For lower or higher burdens please contact us. Standard accuracy classes and burdens According to IEEE and CAN/CSA 0. Voltage factor 1.Secondary voltages and burdens according to IEC Standards International IEC 61869-3 Swedish Standard SS-EN 60044-2 All national standards based on IEC Rated data at 50 or 60 Hz.85 ZZ = 400 VA power factor 0.5 or 1. for systems without effective earthing with automatic earth fault tripping and 1.85 YY = 150 VA power factor 0. 2P.13-2008 Canadian CAN/CSA 60044-2 Rated data at 60 Hz.9/30 sec. Since the residual voltage winding is not loaded except during a fault. and to achieve best accuracy you should avoid specifying burdens higher than necessary.85 Buyer’s Guide | Outdoor Instrument Transformers 37 .9 The transformer normally has one or two windings for continuous load and one residual voltage winding. Rated burdens: W = 12. Example of turns ratios: 350-600:1 means one secondary winding with the ratio 350:1 and one tertiary winding ratio 600:1 350/600:1:1 means one secondary winding and one tertiary winding both with taps for ratios 350:1 and 600:1 Protective classes according to CAN/CSA (1P. 1.7 Y = 75 VA power factor 0. Secondary voltages and burdens according to IEEE and CAN Standards American IEEE C57. see page 6.5 VA power factor 0.85 Z = 200 VA power factor 0.6 WXYZ 1.9 according to CAN/CSA can be quoted on request. Voltage factor 1.5/30 sec. Voltage factor 1.1 X = 25 VA power factor 0. Please note that modern meters and protection require much lower burdens than those above. Standard accuracy classes and burdens According to IEC 50 VA class 0. for effectively earthed systems. Other configurations can be quoted according to requirements.0 100 VA class 3P 100 VA class 3P 100 VA class 3P For lower or higher burdens please contact us.2 100 VA class 0.4 The transformer normally has one or two secondary windings for continuous load (Y-connected).5 150 VA class 1. 3P) can be quoted on request. the effect of its load on the accuracy of the other windings is disregarded in accordance with IEC. EMF 52-170 kV Design data Voltage transformers EMF A Type Total height mm EMF 52 EMF 72 EMF 84 EMF 123 EMF 145 EMF 170 1464 1464 1464 2360 2360 2490 B Flash-over distance mm 630 630 630 1200 1200 1330 C Height to terminal box mm 114 114 114 65 65 65 D Fixing hole dimensions mm 335 x 335 335 x 335 335 x 335 410 x 410 410 x 410 410 x 410 E Ground level height mm 540 540 540 760 760 760 F Expansion vessel diameter mm 324 324 324 416 416 416 F 135 F 135 B B A E C 20 C E D D D D EMF 52-84 Note: Primary terminal will be mounted at site EMF 123-170 Note: Primary terminal will be mounted at site 38 Outdoor Instrument Transformers | Buyer’s Guide 20 A . 6 2.7 x 0. However.1 x 0.2 5.0 x 2. Buyer’s Guide | Outdoor Instrument Transformers 39 .7 2.6 2.8 x 1.8 x 1.5 2.EMF 52-170 kV Shipping data Voltage transformers EMF (Vertical 3-pack) Type Net weight incl. oil Porcelain insulator kg EMF 52 EMF 72 EMF 84 EMF 123 EMF 145 EMF 170 300 300 300 570 570 610 kg 40 40 40 80 80 83 Oil Shipping weight 3-pack kg 1040 1040 1040 1975 1975 2130 Shipping dimensions 3-pack.1 2. oil Porcelain insulator kg EMF 123 EMF 145 EMF 170 EMF 170 1) 1) Oil kg 80 80 83 86 Shipping weight 1-pack kg 720 720 765 810 Shipping dimensions 1-pack.7 1.5 5.9 x 1.1 2.2 570 570 610 670 Insulator with long creepage distance”.8 x 1.2 5.6 x 0.1 Shipping volume 1-pack m3 2.0 2.8 x 0.6 x 0.0 x 2.7 1.1 2.1 3.6 x 0.0 x 1.0 x 1. EMF 123 .8 x 0. L x W x H m 1. L x W x H m 2.8 x1.4 EMF 52 .0 x 1.5 2.9 x 1.170 is normally packed for vertical transport (3-pack).84 must not be tilted more than 60° during transport and storage. Voltage transformers EMF (Horizontal 1-pack) Type Net weight incl.7 Shipping volume 3-pack m3 2.9 x 1.0 x 2.1 2. it can be transported in a horizontal position and is available on request for horizontal transport (1-pack). 40 Outdoor Instrument Transformers | Buyer’s Guide . Brief performance data Installation Design Insulation CVD Aluminum-foil / paper / polypropylene-film. The CPB is designed for a wide range of shifting conditions including polar and desert climates. The high quality. state of the art.800 kV Up to 1.9/8 hrs Porcelain / Silicon rubber (SIR) ≥ 25 mm/kV (Longer on request) Outdoor Capacitor type.CPB 72-800 kV Capacitor voltage transformer The CPB is designed for revenue metering and protection in high voltage networks. automated manufacture of the capacitor elements provides consistent quality to ensure long term reliability and performance. complies with IEC Buyer’s Guide | Outdoor Instrument Transformers 41 . synthetic oil EMU Highest voltage for equipment Voltage factor (Vf) Insulators Creepage distance Service conditions Ambient temperature Design altitude -40 °C to +40 °C (Other on request) Maximum 1 000 m (Other altitude on request) Paper .mineral oil 72 . Due to the optimized proportions of the mixed dielectric the capacitor elements are subject to low electrical stress with high stability under extreme temperature variations. General data can be found on the door of the terminal box. The damping circuit has two bridged terminals. Mechanical stability The mechanical stability gives sufficient safety margin for normal wind loads and conductor forces. The CPB will also withstand most cases of seismic stress. it is possible to mount line traps on top of the capacitor divider. Ferroresonance damping circuit All CVTs need to incorporate some kind of ferro-resonance damping. and normally no further adjustment is necessary. Power Line Carrier (PLC) As an option all CVTs can be equipped with Carrier Accessories. Modern PLC equipment are adapted for a wide range of coupling capacitors. behind a sealed covering hood in the terminal box. connection diagrams and secondary winding data on the inside. etc. Silicone Rubber Insulators The complete CPB range is available with silicone rubber insulators.d2. The damping circuit consists of a reactor with an iron core. Ratio adjustment The transformer of the electromagnetic unit has five adjustment windings on the earth side of the primary winding. 25 mm/kV phase-phase. Bolts. that may saturate the iron core of the transformer by various disturbances in the network. resistant to most known environment factors. Potential Grounding Switch A potential grounding switch can be included in the EMU. by resistance measurement. in series with the inductance of the transformer and the series reactor. nuts.05%. In particular cases. The CPB use a damping circuit. and an oil-cooled resistor in series. yielding a high impedance. d1. and readjustment of the transformer for the new combination of voltage divider/electromagnetic unit. as porcelain. This phenomenon can also overheat the electromagnetic unit. Rating plates Corrosion resistant rating plates with text and wiring diagrams are used. All CVTs with this type of insulators have the same high creepage distance. so that practically no current is flowing through this circuit. connected in parallel with one of the secondary windings (see diagram on page 51). to check that the circuit is intact. No specific capacitance is required. Each capacitor unit is marked with measured capacitance at the top. behind a sealed covering hood in the secondary terminal box. Our SIR insulators are produced with a patented helical extrusion molding technique. the iron core of the damping reactor is not saturated. If needed. this bridge can be opened. This circuit can be brought into resonance. For all combinations except CPB(L). Creepage distance As standard the CPB is offered with creepage distance 25 mm/kV. constitutes a tuned resonance circuit. The numbers of turns of these windings have been chosen so that the ratio can be adjusted ±6. Only minimum capacitance must be specified due to choice of frequency. are made of acid-proof stainless steel. or lead to insulation breakdown. which gives completely joint-free insulators with outstanding performance. the adjustment windings enable exchange of the voltage divider on site. since the capacitance in the voltage divider. Longer creepage distances can be offered on request.CPB 72-800 kV Capacitor voltage transformer Material All external metal surfaces are made of an aluminum alloy.05% in steps of 0. and after agreement. The CVT is delivered adjusted for a specified burden and class. These windings are externally accessible. (normally light gray). The aluminum surfaces do not normally need painting. We can however offer anodization or protective paint. 42 Outdoor Instrument Transformers | Buyer’s Guide . Under normal use. It is also provided with a drain. such as a round aluminum studs. 80 x 145 x 8 mm. Terminals d1 . The terminal box can also be equipped with fuses or micro circuit breakers.5 to 100 123 to 170 245 300 to 362 ≥ 420 Static withstand test load FR (N) CPB(L) 500 1000 1250 CPB 2500 3000 2500 1250 1500 100 75 Secondary terminal box and secondary terminals The transformer is equipped with a secondary terminal box. which can be moved to either mounting foot.d2 and B1 . The secondary terminals normally consist of Phoenix UK10N standard terminal blocks for wire cross-section 10 mm². suitable for bolts with C-C from 40 to 50 mm and for connecting normal aluminum cable clamps. Ground terminals The transformer is normally equipped with a ground clamp with a cap of nickel-plated brass for IEC conductors 8 – 16 mm (area 50 – 200 mm2) and for ANSI conductors # 2 SOL to 500 MCM. can be quoted on request. Other primary terminals can be offered on request. Standard terminal box The transformer can also be equipped with larger terminal box with space for power line carrier equipment. Grounding terminals for the secondary circuits are placed inside the terminal box.Test forces at the primary terminal as per IEC 61869-5 Highest voltage for equipment Um (kV) 72. A stainless steel bar. Ø=30 mm. The bar can be supplied drilled according to IEC or NEMA standards. Buyer’s Guide | Outdoor Instrument Transformers 43 135 Primary terminal The CPB is normally delivered with a flat 4-hole aluminum pad. This box is equipped with a detachable.B11 are intended for factory settings and thus located behind a sealed covering hood to prevent inadvertent reconnection. which on installation can be drilled for cable bushings. terminals for the adjustment windings (B1 to B11) and the capacitor low voltage terminal ”L” (for power line carrier equipment). In the terminal box are also terminals (d1-d2) for damping circuit. 40 20 50 40 14 . undrilled gland plate. protection class IP 55. The ”L” terminal must always be grounded if no carrier equipment is connected. Maintenance The CPB is designed for a service life of more than 30 years. The tank of the electromagnetic unit can. For extended storage. the terminal box must be checked for condensation and penetrating moisture. The power loss will recover to original values after some time of continuous operation at rated voltage. Readings can be taken between the top and the ”L” terminal in the secondary terminal box. Should there be any damage. on request. and we can deliver suitable sampling equipment. However discrepancies between the secondary voltages in parallel phases can be an indication of a fault in a capacitor part of one of the CVT. be equipped with a sampling valve. If the transformer is stored protected. the contact surfaces should be protected from corrosion. Any damage should be documented (photographed). appropriate measures must be taken. please contact ABB for advice before the goods are handled further. Note that although the trend of increasing power loss is counteracted after some time in operation the on-site power loss measurements may still show a slight discrepancy to factory values due to the much lower test voltage usually applied on site. After energizing the capacitors with rated voltage the power losses starts to decrease back. Since the high voltage winding of the transformer is not capacitively graded. Check that the capacitor units have the same serial number (for CVDs with more than one capacitor unit). Capacitors not energized for a long period of time may show increased power losses. Assembly The electromagnetic unit and the capacitor voltage divider are delivered as one unit for all CVTs for which only one capacitor unit is used. in its original packaging. • Visual check We recommend a periodic inspection. and if possible. up to five years. The maximum time when stored in its original crate without any protection is six months. What is possible. If the transformer(s) is stored horizontally. if available. which is why such a comparison is recommended. before the top part(s) of the CVD is (are) mounted in place. • Control measurements of the EMU An easily performed test is to measure the insulation resistance in mega-ohms (max. • Control measurements of the CVD Since the voltage dividers are permanently sealed it is not possible to take oil samples from them. the transformer must be stored indoors or under roof. CVTs with higher system voltages. such as connecting heating elements. ensure that all contact surfaces are thoroughly cleaned. make sure the building is well ventilated. Lifting instructions are included in each package. or providing the terminal box with silica gel or an equivalent drying agent. however. test voltage 1 000 VDC) of the secondary windings.CPB 72-800 kV Installation and maintenance Unpacking Please check the crates and their contents for damage during transportation upon receipt. is to take an oil sample. In such a case a further measurement of the capacitance value is recommended. We recommend however the following checks and measurements. Before long-term storage up to two years. Under normal service conditions. and are practically maintenance-free. no oil analysis should be necessary during the first 20 years of service. having more than one CVD part. are delivered with the bottom unit of the CVD assembled onto the EMU. under unfavorable climatic conditions. Storage The following have to be considered during storage: The transformer(s) must be stored on a flat and stable surface with a suitable load capacity. An easier method is to take the oil sample from the oil-filling hole. no noticeable ageing will occur within the capacitors (verified by ageing tests). for gas chromatography analysis from the electromagnetic unit to assess its condition. corrosion can occur on secondary terminals and accessories in the terminal box due to drainage not functioning properly in the horizontal position. For longer storage. a measurement of the loss angle (tan delta) will give no significant result. Sampling intervals will vary. depending on service conditions. generally. The EMU. 44 Outdoor Instrument Transformers | Buyer’s Guide . When stored horizontally. Before placing in service. with the bottom CVD unit should be installed first. to check for oil leakages and also to inspect the insulator for collection of dirt. The above values are total maximum values for the secondary winding(s). The aluminum in the capacitor elements. laws and regulations. and pose a low impact to the environment. Buyer’s Guide | Outdoor Instrument Transformers 45 .0/3P T1 3P T1/6P T1 50 100 200 100 Voltage factor 1.9 The transformer normally has one or two windings for continuous load and one earth-fault winding. is stated. Approximate maximum total burdens in VA Measuring winding Highest class CPB(L) 0.CPB 72-800 kV Capacitor voltage transformer Environmental Aspects Impregnant Both Faradol 810 (the synthetic oil in the voltage dividers). Other standards Quoted on request. the oil-saturated paper insulation should be burnt. the table above must be applied to the sum of these burdens and the highest accuracy class. Other configurations and/or designs according to other standards (ANSI. the effect of its load on the accuracy of the other windings is disregarded in accordance with IEC. class 3P. The disposal should be carried out in accordance with local legal provisions.5 or 1. with their combination of foil. The porcelain can be deposited after it has been crushed.2 0. If the transformer has more than one continuously loaded winding. these can be burnt in an appropriate plant. etc) can be offered according to requirements. possibly with different classes. Secondary voltage and burdens Standard IEC 61869-5 Rated data at 50 or 60 Hz. the plastic film will not emit any harmful substances during this process. Since the residual voltage winding is not loaded except during a fault.5* ) CPB 100 200 400 Earth-fault winding.5/30 sec. The metals in the electromagnetic unit and the housings of the voltage divider can be recycled.9/8 hrs is stated. For systems with insulated neutral point without automatic earth fault tripping 1. Faradol has similar combustion properties as normal mineral oil.9*) CPB 80 200 400 *) The IEC standards state as standard values for effectively earthed systems 1. For systems without effective earthing with automatic earth fault tripping. Please note that modern meters and protection require much lower burdens than those above and to achieve best accuracy burdens should not be specified higher than necessary. For other configurations please consult ABB. voltage 100/√3 or 110/√ 3 V and one or no residual voltage winding. In this respect. CAN. In order to recycle the copper in the windings. Destruction After draining the oils. paper and polypropylene film. Voltage factor 1. Stated values should only be considered as maximum values. intended for connection in open delta.9/30 sec. a rated voltage factor 1. voltage 100 or 110 (100/3 or 110/3) V. Aluminum parts are labeled with material specifications. can be recycled after the insulation has been burnt. irrespective of the voltage factor 100 100 100 CPB(L) 40 80 120 Voltage factor 1. and the standard transformer oil in the electromagnetic unit are free from PCB and other strongly harmful substances.5 1. *) 5 pC at test voltage 1.2 x Um pC*) 10 10 10 10 10 10 10 10 10 10 kV Max. 46 Outdoor Instrument Transformers | Buyer’s Guide .2 x Um 1.2 x Um 1.CPB 72-800 kV Test voltages Test voltages: IEC 61869-5 Type Highest voltage for equipment (Um) kV CPB 72 CPB 123 CPB 145 CPB 170 CPB 245 CPB 300 CPB 362 CPB 420 CPB 550 CPB 800 72.2 x Um 1.2 x U m 1.2 x Um 1.2 x Um 1.2 x Um 1. PD level RIV test voltage RIV level Test voltages above are valid for altitudes ≤1000 meters above sea level.5 123 145 170 245 300 362 420 525 800 kV 140/140 230/230 275/275 325/325 460/460 460/460 510/510 630/630 680/680 975/975 kV 325 550 650 750 1050 1050 1175 1425 1550 2100 kV 850 950 1050 1175 1550 kV 1.2 x Um 1.2 x Um 1.2/50 µs Switching impulse 250/2500 µs PD test voltage Max. 78 92 108 156 190 230 267 333 486 µV ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 1 min wet/dry LIWL 1.2 x Um/√3 Other standards Quoted on request. Medium oil tank. Normally insulator for the nearest higher voltage.phase) Type Number of capacitor units Standard capacitance For IEC test voltages Polymer/Porcelain pF (+10. Primary terminal excluded. Valid for standard terminal box only Buyer’s Guide | Outdoor Instrument Transformers 47 .5%) CPB 72 CPB 72 CPB 72 1) 1) 2) Extra long creepage distance Flashover distance Creepage distance Protected creepage distance mm 680/660 635 635 1025/1005 980 980 1235/1215 1190 1190 1400 1445/1425 1400 1400 1400 2005/1985 1960 1960 1960 2380 2380 2800 2800 2800 2800 3220 3220 4200 4200 4200 4200 6060 4) mm 1813 1813 1813 3075 3160 3160 3625 3880 3880 4650 4250 4650 4650 4650 6125 6510 6510 6320 7760 7760 9300 9300 9300 9300 10630 10630 13950 13980 13980 13950 21080 mm 800 762 762 1300 1307 1307 1600 1634 1634 1960 1786 1960 1960 1960 2619 2723 2723 2560 3268 3268 3920 3920 3920 3920 4356 4356 5505 5882 5882 5505 8500 mm 1 1 1 1) 1) 2) 18200 24900 24900 11200 15400 15400 9100 12900 12900 20200 7800 10800 10800 17000 5600 7700 7700 12100 6400 6400 10100 5400 5400 8500 4800 4800 8800 3700 3700 5800 4400 3) CPB 123 CPB 123 CPB 123 CPB 145 CPB 145 CPB 145 CPB 145 CPB 170 CPB 170 CPB 170 CPB 170 CPB 245 CPB 245 CPB 245 CPB 245 CPB 300 CPB 300 CPB 300 CPB 362 CPB 362 CPB 362 CPB 420 CPB 420 CPB 420 CPB 550 CPB 550 CPB 550 CPB 800 1) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 3 2 2 3 4 2) 1) 1) 2) 2) 1) 1) 2) 2) 1) 1) 2) 2) Others on request. capacitance and distances Normal creepage distance 25 mm/kV (min. 1) 2) 2) 1) 2) 2) 1) 2) 2) 1) 2) 2) 2) Lightweight oil tank. . nominal values phase .CPB 72-800 kV Design data and dimensions Number of capacitor units. for some voltages. be higher than in the drawings above.CPB 72-800 kV Dimensions F CPB 245 .245 F A A E B E B B C D D D D Note! The number of capacitor divider units can. Please check in the table on the next page 48 Outdoor Instrument Transformers | Buyer’s Guide C .800 CPB 72 . Valid for standard terminal box only Buyer’s Guide | Outdoor Instrument Transformers 49 . Medium oil tank.5%) CPB 72 CPB 72 CPB 72 1) 1) 2) B Flashover distance 3) C Height to flange 4) D Mounting hole distance E Ground level height Polymer/Porcelain F Diameter expansion tank mm 335 355 355 335 355 355 335 355 355 355 335 355 355 355 335 355 355 355 355 355 355 355 355 355 355 355 355 355 355 355 355 Total height Polymer/Porcelain mm 1580 1615 1690 1925 1960 2035 2135 2170 2245 2455 2345 2380 2455 2455 2905 2940 3015 3405 3750 3825 4245 4170 4245 4245 4590 4665 6035 5570 5645 6035 7825 4) mm 680/660 635 635 1025/1005 980 980 1235/1215 1190 1190 1400 1445/1425 1400 1400 1400 2005/1985 1960 1960 1960 2380 2380 2800 2800 2800 2800 3220 3220 4200 4200 4200 4200 6060 mm 225 225 305 225 225 305 225 225 305 305 225 225 305 305 225 225 305 305 225 305 305 225 305 305 225 305 305 225 305 305 305 mm 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 335 mm 640/650 675 750 640/650 675 750 640/650 675 750 750 640/650 675 750 750 640/650 675 750 750 675 750 750 675 750 750 675 750 750 675 750 750 750 1 1 1 1) 1) 2) 18200 24900 24900 11200 15400 15400 9100 12900 12900 20200 7800 10800 10800 17000 5600 7700 7700 12100 6400 6400 10100 5400 5400 8500 4800 4800 8800 3700 3700 5800 4400 3) CPB 123 CPB 123 CPB 123 CPB 145 CPB 145 CPB 145 CPB 145 CPB 170 CPB 170 CPB 170 CPB 170 CPB 245 CPB 245 CPB 245 CPB 245 CPB 300 CPB 300 CPB 300 CPB 362 CPB 362 CPB 362 CPB 420 CPB 420 CPB 420 CPB 550 CPB 550 CPB 550 CPB 800 1) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 3 2 2 3 4 2) 1) 1) 2) 2) 1) 1) 2) 2) 1) 1) 2) 2) 1) 2) 2) 1) 2) 2) 1) 2) 2) 1) 2) 2) 2) Lightweight oil tank.Number of capacitor divider units and distances A Type Number of capacitor divider units Standard capacitance For IEC test voltages pF (+10. Primary terminal excluded. . 65x1.73x0.73x0.94x1.9 + 2x2.88x1. top part horizontal 3-pack (normally.9 + 2.08) + 2x(2.5%) CPB 72 CPB 72 CPB 72 1) 1) 2) Net weight incl.6 4.72 3x(2.3 3x2. due to transport height) 50 Outdoor Instrument Transformers | Buyer’s Guide .9 4.9 + 2.9 + 2x2.08) + 2.08) + 2.54x0.54 3) 3) 3) Shipping volume Total m3 3.65x1.2 4.18x1.0 + 2.1 3.67x2.CPB 72-800 kV Shipping data Capacitor voltage transformer CPB Type Standard capacitance For IEC test volltage pF (+10.08) + 2.08) + 2.65x1.1 + 2.54x0.65x1.9 3x1.08) + 2.65x1.54x0.4 + 3.65x1.29x0.72) 6) 3x1.4 3x2.97x1.18x1.54x0.67x2.72 6) 6) 3x1.94x1.39x1.4 3x1.94x0.9 3x1.18x1.4 3x1. top part horizontal 3-pack Bottom part horizontal 1-pack.54x0.65x1.08) + 2.94x1.08) + 2.94x1.98 0.08) 3x(2.9 3x1.94x1.72 3x(3.94x1.08) + 3x(2.3 3x2.18x1.18x1.73x0.72) 3x635 + 3x945 3x(2.94x1.88x1.54 0.72 3x1.94x1.54 0.2 6) 6) 1) 2) 2) 3x670 + 2x1055 3x(2.67x2.1 3.73x0.65x1.08) 3x(3.67x1.94x1.98 0.94x1.18x1.54x0.54x0.08) 3x1.6 3.4 + 3.73x0.6 6) 2) 6) 6) Lightweight oil tank Medium oil tank Vertical 3-pack Horizontal 1-pack (normally.65x1.1 + 2.98 0.73x0.54x0.73x0. oil Polymer/ Porcelain kg 190/200 210/240 280/310 200/220 230/280 300/350 210/280 230/300 300/370 350/440 220/250 240/320 320/400 350/440 240/280 280/390 350/460 410/540 330/470 400/540 460/650 360/520 430/590 460/650 380/560 450/630 570/860 430/670 500/740 690/1070 720/1170 Oil Shipping weight Shipping weight 3-pack Polymer kg 38 44 62 40 45 63 41 47 65 78 43 48 66 76 47 53 71 92 63 81 108 67 85 104 71 89 138 75 93 160 164 kg 710 770 980 750 840 1050 785 845 1055 3x520 3x385 3x410 3x490 3x520 3x435 3x475 3x545 1080+475 845+485 1070+470 3x505 + 1x570 3x415 + 1x540 3x490 + 1x525 3x505 + 1x570 3x440 + 1x600 3x515 + 1x 585 3x500 + 2x555 3x480 + 1x700 3x555 + 1x685 3x540 + 2x675 3x525 + 3x610 3-pack Porcelain kg 740 860 1070 810 990 1200 995 1055 1265 3x610 3x415 3x490 3x570 3x610 3x475 3x585 3x655 1300+670 1085+695 1310+680 3x600 + 1x855 3x495 + 1x780 3x570 + 1x765 3x600 + 1x855 3x530 + 1x870 3x605 + 1x855 3x600 + 2x845 3x600 + 1x1060 3x675 + 1x1045 Shipping dimensions 3-pack LxWxH m 0.08) 3x(2.72 3x(2.76x1. due to transport height) Bottom part vertical 3-pack.6 3.94x0.73x0.73x0.43x0.65x1.94x1. .6 3x2.39x1.0 + 1.73x0.0 + 2.0 4.0 4.9 3x2.67x2.65x1.39x1.54x0.54x0.33 + 1.65x1.33 0.54x0.72) 3x(3.08) + 2x(2.29x0.9 + 2.08) 3x(2.54x0.4 3x1.72 3x(2.54 + 1.33 0.65x1.67x1.67x1.94x0.3 5) 1) 1) 2) 2) 4) 4) 4) 4) 4) 4) 4) 4) 1) 1) 2) 2) 4) 4) 4) 4) 4) 4) 5) 0.65x1.08) + 2.54x0.65x1.65x1.4 3x2.43x0.33 0.72 0.67x2.0 3) 3) 3) 18200 24900 24900 1) 1) 2) CPB 123 CPB 123 CPB 123 CPB 145 CPB 145 CPB 145 CPB 145 CPB 170 CPB 170 CPB 170 CPB 170 CPB 245 CPB 245 CPB 245 CPB 245 CPB 300 CPB 300 CPB 300 CPB 362 CPB 362 CPB 362 CPB 420 CPB 420 CPB 420 CPB 550 CPB 550 CPB 550 CPB 800 1) 2) 3) 4) 5) 6) 11200 15400 15400 9100 12900 12900 20200 7800 10800 10800 17000 5600 7700 7700 12100 6400 6400 10100 5400 5400 8500 4800 4800 8800 3700 3700 5800 4400 3) 3) 3) 3) 3) 3) 1) 1) 2) 2) 3) 3) 3) 4) 3) 3) 3) 4) 3x(2.73x0.1 3.6 6) 1) 2) 2) 6) 6) 6) 6) 6) 6) 1) 2) 2) 6) 6) 6) 6) 6) 3x(2.72 4.54x0.4 3x2.65x1.54 + 1.65x1.29x0.72 3x(2.94x1.65x1.67x2.72 3x(2.9 + 2.08) 3x(3.2 6) 1) 2) 2) 5) 5) 5) 5) 6) 3x(2.67x2.2 3x2.9 3x1.08) 3x(3.97x1.08) 3x(2.72 0.67x2.67x2.1 + 3x2. 3. 2.CPB 72-800 kV Schematic diagram Schematic diagram of Capacitor Voltage Transformer 1 BN Ground 1. 4. Option – Carrier Accessories Drain coil available for 12. 24 or 48 mH. 5. Electromagnetic unit (EMU): Intermediate voltage transformer with compensating reactor Primary winding of the intermediate voltage transformer Compensating reactor Adjustment windings Secondary windings Ferro-resonance damping circuit A potential grounding switch can be added in the EMU. Buyer’s Guide | Outdoor Instrument Transformers 51 . 6. 52 Outdoor Instrument Transformers | Buyer’s Guide . The CCB are designed for widely shifting conditions from polar to dessert climates.9/8 hrs Porcelain On request silicon rubber (SIR) Creepage distance ≥ 25 mm/kV (Longer on request) Service conditions Ambient temperature -40 °C to +40 °C (Others on request) Design altitude Maximum 1000 m (Others on request) Buyer’s Guide | Outdoor Instrument Transformers 53 .CCB 72-800 kV Coupling capacitors Coupling capacitors CCB are intended for power line carrier. With regard to PLC application the CCB are suitable for use within the entire power line carrier transmission frequency range from 30 kHz to 500 kHz. synthetic oil Highest voltage for equipment Voltage factor Fv (Vf) Insulators 72 . The mixed dielectric in the capacitor element is subject to low stress and has proven to be insensitive to temperature changes. filtering and other general capacitor applications with connection between phase and ground in high voltage networks with isolated or grounded neutral. Brief performance data Installation Design Insulation Outdoor Column type Aluminum-foil / paper / polypropylene-film.800 kV Up to 1. 25 mm/kV phase-phase. Mechanical stability The mechanical stability gives sufficient safety margin for normal wind loads and conductor forces. Special capacitances Other capacitance values than those listed below are available on request. General data is to be found on the lowest capacitor unit whilst measured capacitance is marked on each capacitor unit. Rating plates Corrosion resistant rating plates with laser engraved text are used. Our SIR insulators are produced with a patented helical extrusion moulding technique that gives completely joint-free insulators with outstanding performance. 54 Outdoor Instrument Transformers | Buyer’s Guide . are made of acid-proof stainless steel. Bolts. All CCB with this type of insulators have the same high creepage distance. Support insulators. nuts. The bar can be supplied undrilled or drilled according to IEC or NEMA standards. front or rear. A stainless steel bar terminal. Primary terminal CCB is normally delivered with a flat 4-hole aluminium pad suitable for bolts C-C from 40 to 50 mm for connecting regular aluminium cable clamps. Low voltage terminal/Ground clamp and support insulators The coupling capacitor is normally equipped with an L-terminal/Ground clamp with a cap of nickel-plated brass for conductors 8-16 mm (area 50-200 mm2) which can be moved to either mounting side. as porcelain. A line trap can in most cases be mounted directly on top of the coupling capacitor for system voltage 245 kV and below. Creepage distance As standard. CCB is offered with creepage distance 25 mm/kV phase-phase (IEC pollution class Heavy). PLC and Line trap Modern PLC equipment is adaptable for a wide range of coupling capacitors.CCB 72-800 kV Coupling capacitors Material All external metal surfaces are made of aluminium alloy resistant to most known environment factors. The aluminium surfaces do not normally need painting. for mounting the CCB insulated from the support structure (mainly for PLC application) are part of the delivery. Ø=30 mm.5 to 100 123 to 170 245 300 to 362 ≥ 420 1) Static withstand test load FR (N) CCB 1) 500 1000 1250 CCB 2500 3000 2500 1250 1500 Can not be equipped with line trap on top Higher can be quoted on request. Other primary terminals can be offered on request such as a round aluminium studs. can be quoted on request. Any specific capacitance is then not required. Longer creepage distances can be offered on request. Maximum static test force on the primary terminal in all directions is: Highest voltage for equipment Um (kV) 72. Only a minimum capacitance is usually specified due to choice of frequency. etc. Silicone Rubber Insulators (SIR) The complete CCB range is available with silicone rubber insulators. 80 x 145 x 8 mm. and is practically maintenance-free. with their combination of foil. are always delivered as separate units and assembled at installation.storage The CCB 72-800 is packed for horizontal transport (3-pack). in its original packaging. In this respect Faradol has similar combustion properties as normal mineral oil. The coupling capacitor(s) must be stored on a flat and stable surface with a suitable load capacity. the coupling capacitor(s) must be stored indoors or under roof. We recommend however. The metals in the housings of the capacitor units can be recycled. ensure that all contact surfaces are thoroughly cleaned. This applies for storage of up to two years. Note that although the trend of increasing power loss is counteracted after some time in operation the on-site power loss measurements may still show a slight discrepancy to factory values due to the much lower test voltage usually applied on site. The power loss will recover to original values after some time of continuous operation at rated voltage. Buyer’s Guide | Outdoor Instrument Transformers 55 . up to five years.CCB 72-800 kV Installation and maintenance Transport . the plastic film will not emit any harmful substances during this process. Unpacking Please check the crates and their contents for damage during transportation upon receipt. Environmental aspects Impregnant Faradol 810 (the synthetic oil in the capacitor units) is free from PCB and other strongly harmful substance and poses low impact to the environment. and if possible. to check for oil leakages and also to inspect the insulator for possible damage and collection of dirt. If 1-pack horizontal transport is required this must be stated on the order. Destruction After draining the oil. Assembly The capacitor units. Capacitors not energized for a long period of time may show increased power losses. paper and polypropylene film. The porcelain can be deposited after it has been crushed. periodic measurement of the capacitance value and dissipation factor may still be carried out in order to verify stable conditions of the capacitor units. no noticeable ageing will occur within the capacitors (verified by ageing tests). Should there be any damage. the following checks and measures. make sure the building is very well ventilated. Aluminium parts are labelled with material specifications. Under normal service conditions. the contact surfaces should be protected from corrosion. For longer storage. For extended storage. Any damage should be documented (photographed). However. Readings are taken between the top and Lterminal/Ground clamp. Before placing in service. please contact ABB for advice before the goods are handled further. The maximum time when stored in its original crate without any protection is six months. Regarding the aluminium in the capacitor elements. Measurements of the capacitor units Since the capacitor units are permanently sealed it is not possible to take oil samples from them. it can be recycled after the insulation has been burnt. Maintenance The CCB is designed for a service life of more than 30 years. After energizing the capacitors with rated voltage the power losses starts to decrease back. whenever the coupling capacitor consists of more than one unit. If the coupling capacitor(s) is stored protected. The disposal should be carried out in accordance with local legal requirements and regulations. Visual check We recommend a periodic inspection. it can be burnt in an appropriate plant. capacitance. Note the capacitance for the higher voltage level will normally be used. heights. flashover and creepage distance Minimum nominal values Type Number of capacitor units pF (+10. -5%) CCB 72 CCB 72 CCB 123 CCB 123 CCB 145 CCB 145 CCB 145 CCB 170 CCB 170 CCB 170 CCB 245 CCB 245 CCB 245 CCB 300 CCB 300 CCB 362 CCB 362 CCB 420 CCB 420 CCB 550 CCB 550 CCB 800 1) 2) 1) 1) 1) 1) 1) Standard capacitance Total height A mm 1130 1165 1475 1720 1685 1720 1930 1895 1930 1930 2455 2490 2892 3310 3732 3732 3732 4152 5534 5132 5534 7796 Height each divider unit mm N/A N/A N/A N/A N/A Diameter Expansion tank mm 335 355 335 355 335 Flashover distance Polymer/porcelain 2) Creepage distance 2) Protected creepage distance mm 2) mm 680/660 635 1025/1005 980 1235/1215 1190 1400 1445/1425 1400 1400 2005/1985 1960 1960 2380 2800 2800 2800 3220 4200 4200 4200 6060 mm 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 2 3 4 18200 24900 11200 15400 9100 12900 20200 7800 10800 17000 5600 7700 12100 6400 10100 5400 8500 4800 8800 3700 5800 4400 1813 1813 3075 3160 3625 3880 4650 4250 4650 4650 6125 6510 6320 7760 9300 9300 9300 10630 13950 13980 13950 21080 800 762 1300 1307 1600 1634 1960 1786 1960 1960 2619 2723 2560 3268 3920 3920 3920 4356 5505 5882 5505 8500 N/A N/A N/A N/A N/A N/A N/A 1510 / 1382 1718 / 1592 1930/1802 1930 / 1802 1930 / 1802 2140 / 2012 1930 / 1802 / 1802 2630 / 2502 1930 / 1802 / 1802 2045 / 1917 / 1917 /1917 355 355 335 355 355 335 355 355 355 355 355 355 355 355 355 355 355 Can not be equipped with line trap on top If longer creepage distance than standard is needed. please choose the higher voltage that corresponds to the wanted creepage distance.CCB 72-800 kV Technical data CCB: Number of capacitor units. 56 Outdoor Instrument Transformers | Buyer’s Guide . 75 2 x (1.00x0.0 1.75 2.00x0.8 0.80x0.00x0.40x0.0 2 x 1.65x0.45x0.55x0.65x0.20x0.65x0.65x0.80x0.90x0.75 2.40x0.4 1.1 1.65x0.75x0.75 2.65x0.0 2 x 1.75 2.65x0.75 1.00x0.80x0.75 2.1 1.65x0.8 + 1.45 2.1 1.9 2 x 1.75) 2 x (2.20x0.55x0.65x0.65x0.40x1.6 2 x 1.75 1.75) 2 x (2.65x0.65x0.75) 2.80x0.75 + 2.0 1.75 2.55x0.75 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 3 2 3 4 80/90 90/130 90/110 105/170 100/120 115/190 140/250 105/140 130/210 140/250 130/170 150/270 220/360 230/410 270/470 230/410 270/470 250/450 390/690 300/560 390/700 560/1020 Buyer’s Guide | Outdoor Instrument Transformers 57 .75) 2 x (2.2 kg 9 13 10 16 11 18 25 13 19 25 17 24 40 43 55 39 50 43 80 50 75 110 m 1.1 1.20x0.00x0.65x0. oil Polymer/porcelain Oil Shipping dimensions One CCB Package weight One CCB kg 71 71 80 80 85 85 91 91 91 91 115 115 2 x 80 2 x 80 2 x 85 2 x 85 2 x 85 2 x 106 195 2 x 118 194 106 + 223 Shipping volume One CCB m3 0.9 0.65x0.75 1.65x0.8 0.20x1.65x0.75x0.0 2 x 1.2 2.75) 2 x (1.75) 2.75 2 x (2.9 1.20x1.CCB 72-800 kV Technical data and Shipping dimensions CCB: Number of capacitor units.4 2 x 0.20x0.65x0.45x0.75 2. weights and shipping dimensions Type Number of capacitor units kg CCB 72 CCB 72 CCB 123 CCB 123 CCB 145 CCB 145 CCB 145 CCB 170 CCB 170 CCB 170 CCB 245 CCB 245 CCB 245 CCB 300 CCB 300 CCB 362 CCB 362 CCB 420 CCB 420 CCB 550 CCB 550 CCB 800 1) 1) 1) 1) 1) Net weight incl.65x0.65x0.6 2.9 2 x 0.75 2.75 2.65x0.75) 2 x (2. 2/50 µs Switching impulse 250/2500 µs PD test voltage Max.1 x Um/ √3 1. PD level RIV test voltage RIV level Test voltages above are valid for altitudes ≤ 1000 meters above sea level. 78 92 108 156 191 230 267 349 486 µV ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 ≤ 2500 1 min wet/dry LIWL 1.1 x Um/ √ 3 1.1 x Um/ √3 1./510 ./630 .1 x Um/ √3 1.CCB 72-800 kV Test voltages Test voltages: IEC 60358-1 Type Highest voltage for equipment (Um) kV CCB 72 CCB 123 CCB 145 CCB 170 CCB 245 CCB 300 CCB 362 CCB 420 CCB 550 CCB 800 72.1 x Um/ √ 3 1.1 x Um/ √3 1.5 123 145 170 245 300 362 420 550 800 kV 140/140 230/230 275/275 325/325 460/460 ./460 .1 x Um/ √3 1.1 x Um/ √ 3 pC 10 10 10 10 10 10 10 10 10 10 kV Max.1 x Um/ √ 3 1./680 . please choose the CCB size that cover the required test voltages 58 Outdoor Instrument Transformers | Buyer’s Guide .1 x Um/ √ 3 1. When ANSI/IEEE standard is required./975 kV 325 550 650 750 1050 1050 1175 1425 1550 2100 kV 850 950 1050 1175 1550 kV 1. 800 D=355 D=335 A A 80 L-terminal/Ground clamp with a cap of nickel-plated brass for conductors 8-16 mm (area 50-200 mm2) 410 510 230 410 410 510 230 410 510 Example of adapter plate for CCB 72-550 kV Example of adapter plate for CCB 800 kV Note! The number of capacitor units can.245 Can not be equipped with line trap on top CCB 72 . for some voltages. 510 Buyer’s Guide | Outdoor Instrument Transformers 59 A . See the table on page 56.245 D=355 CCB 245 .CCB 72-800 kV Dimensions CCB 72 . be higher than in the drawings above. Further the PQSensor™ is fully factory calibrated and as a result requires no additional on-site calibration or adjustment. Relative transformation ratio 3.0 1. The graph below shows the errors present in inductive VTs when making harmonic measurements at different voltages (Source CIGRE Working Group 36) and when this is compared with the harmonic measurement accuracy requirements in IEC 61000-4-7 it is quite obvious that inductive VTs are not an appropriate signal source for harmonic measurements. Sophisticated power quality monitors are now available from various manufacturers however the challenge is to provide inputs to these monitors that accurately reflect the voltage on the primary system in a cost effective and safe manner.0 0. − − The PQSensor™ is the only convenient and economic solution for wide bandwidth measurements using CVTs. This recognition has led to the introduction of several standards for power quality measurement and monitoring.0 50 100 200 500 1000 2000 5000 Frequency Using the PQSensor™ Using a CVT equipped with a PQSensor™ is a cost effective and convenient method for accurately measuring voltage harmonics on transmission systems The PQSensor™ is completely installed inside the CVT secondary terminal box. As a result there is no external cabling or fixtures on the CVT support structure and the output voltage is available inside the secondary terminal box together with the conventional CVT output voltage. − − The PQSensor™ provides an output signal that is compatible with all modern power quality recorders −− It is supplied factory installed. − − It eliminates the need for special high voltage instrument transformers or wide bandwidth voltage dividers. Most power quality monitors are currently measuring signals from either Capacitor Voltage Transformers (CVTs) or inductive voltage transformers (VTs). Options for Measuring Harmonics If utilities and users are to monitor harmonics and other wideband transients on high voltage systems. convenient and cost effective method of accurately measuring primary voltage harmonics on transmission systems. there is a need for a cost effective and accurate means to do so.PQSensor™ The PQSensor™ is a transducer that can be used with Capacitive Voltage Transformers (CVTs) to provide a unique. Background Power quality assessment has become an increasingly important requirement in the management of electric supply systems. 60 Outdoor Instrument Transformers | Buyer’s Guide .0 UN = 400 kV UN = 220 kV UN = 20 kV 2. The PQSensor™ has been designed to operate over an extended temperature range of -40 °C to 55 °C meaning it is suitable for the harshest environments. calibrated with the CVT and requires no further on site adjustments or calibration. Most engineers appreciate that CVTs can introduce errors in the measurement of voltage harmonics however they often do not realise that the errors involved which can be greater than 300% at harmonics as low as the 13th will usually render such measurements worthless. Standards such as IEEE 519. While this is a convenient approach as these instrument transformers are readily available in most substations when it comes to harmonic measurements it is often not fully appreciated the degree to which these transformers introduce errors into the measurement chain. − − Installation of the PQSensor™ does not have any impact on the normal operation of the CVT. IEC 61000-4-30 and 61000-4-7 and UK Engineering Recommendation G5/4 require voltage harmonic measurements up to the 50th order. Likewise it is often believed that harmonic measurements made with inductive transformers will yield acceptable results but this is an incorrect assumption. 5 1 1 0. At some harmonic frequencies the levels reported by the CVT will be higher than those present in the input voltage and for others they will be lower. based on actual site measurements show that 35th & 37th harmonics present on the input do not appear on the CVT output and the level of 13 th harmonic on the CVT output is three times higher than the actual level in the substation.5 PQSensor™ 0.PQSensor™ Harmonic Voltage Measurements Using a CVT Input voltage C1 Primary Voltage 3 C2 2.5 0.5 2 1. Buyer’s Guide | Outdoor Instrument Transformers 61 .5 2 1.5 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 Harmonic Order Harmonic Order Using a CVT equipped with a PQSensor™ gives the correct values for voltage harmonics up to and beyond the 100th harmonic with accuracy levels exceeding the requirements of IEC 61000-4-7. These results.5 Harmonic Level (%) 2.5 1 1 0. Using a CVT equipped with PQSensor™ Input voltage Primary Voltage 3 3 PQSensor Output Harmonic Level (%) 2.5 CVT Output Harmonic Level (%) 2 1.5 Harmonic Level (%) 2.5 2 1.5 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 0 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 Harmonic Order Harmonic Order Using a CVT for harmonic voltage measurements can result in errors as large as 300%. The output signal from the PQSensor™ does not contain any of the harmonic errors present in the conventional CVT output. 5V ac) 62 Outdoor Instrument Transformers | Buyer’s Guide .PQSensor™ Installation Main Terminal C1 Electromagnetic Unit (EMU) CVT Secondary Terminal Box CVT Output C2 Measurement Unit PQSensor™ SCM Wide bandwidth voltage output (63. PQSensor™ Technical data Fundamental frequency accuracy (5 °C to 40 °C) Fundamental frequency accuracy (-40 °C to 55 °C) Frequency response Harmonic error (up to the 99th) Phase angle error Recommended output burden Maximum output burden Operating temperature range Power supply voltage European Patent Number: EP 1295133. 220 V ac.250 V dc.717. Error < 0. US Patent Number: US 6.35% 10 Hz − 10 kHz < 5% < 3° > 500 kohm 100 kohm -40 to +55 °C 110 V ac. Buyer’s Guide | Outdoor Instrument Transformers 63 .919.25% Error < 0. 15VA PQSensor™ completely installed inside the CVT secondary terminal box. 110 V . two 10-25 mm cables and six 3. Ludvika.Optional Accessories for cable installation Easy installations for cables A Roxtec CF 16 cable entry kit combines reliable sealing of cables in junction boxes with easy installations. even when tolerances and deviations from nominal dimensions are considered.5-32. The modules are delivered with a center core as a substitute for a cable. HV Components.5-16. For other dimensions. 12. Benefit summary − − Seals several cables and diameters − − Quick and easy installation − − Cable retention − − Rodent proof − − IP 66/67 − − Halogen-free − − UL/NEMA 4. ABB CF 16 junction box kit 2 Part No. 4X. This enables cables of a wide range of diameters to be sealed with a perfect fit. 64 Outdoor Instrument Transformers | Buyer’s Guide . Another benefit is a built in spare capacity for possible new cables in the future. Each CF 16 can handle several cables through the same opening.5 mm cable. Kit supplied The Roxtec CF 16 kits are available in two versions: Each one with a customized set of sealing modules to suit the most common cables sizes and numbers in the junction boxes (as shown below).5 mm cable and four 10-25 mm cables. Simple maintenance A Roxtec CF 16 can be opened and closed repeatedly for easy installations and simple maintenance. Roxtec CF 16 Kit 2: Handles maximum one 9. Sweden. Roxtec CF 16 Kit 1: Handles maximum one 9. This means the entry kit is adaptable to different cable sizes. and to different numbers of penetrations. Multidiameter The CF 16 uses adaptable Multidiameter technology. 13 − − Fire retardant material UL 94-V0 ABB CF 16 junction box kit 1 Part No. please contact: ABB.5 mm cables.5-32. Customer notes Buyer’s Guide | Outdoor Instrument Transformers 65 . such as IEEE. Complete error curves on all transformers must be ordered separately. Partial discharge measurement Routine tests for inductive voltage transformers EMF IEC 61869-3 a. Routine tests The following tests are performed on each transformer as standard before delivery in accordance with applicable standards: Routine tests for current transformers IMB IEC 61869-2 a. Sealing test b. Power-frequency withstand test on primary winding c. High Voltage Products has been certified by Bureau Veritas Quality International (BVQI) to fulfill the requirements of Quality management system ISO 9001. d. Complete excitation curve for each type of core in one transformer. Determination of errors ABB specific tests a.) IEC 61869 clause 7. Determination of errors (One transformer in each batch is type-tested for accuracy.3 Measurement of capacitance and tan delta ABB specific tests a. Remaining units at a reduced number of burdens. Partial discharge measurement d. 75 Hz for one minute) c. Verification of terminal marking and polarity b. Measurement of no load current I0 at √ 3 x rated voltage Other standards The tests described above also fully satisfy other standards. Power-frequency withstand test between winding sections f. 66 Outdoor Instrument Transformers | Buyer’s Guide . Verification of terminal marking and polarity b. Power-frequency withstand test on primary winding (applied test. Type tests The type tests reports for tests performed on transformers types similar to customer specifications are available.Quality control and testing ABB AB. Inter-turn overvoltage test on secondary windings g. Power-frequency withstand test on secondary windings (applied test 4 kV. Power-frequency withstand test on secondary windings e. Environmental management systems ISO 14001 and Occupational health and safety management system OHSAS 18001.4. For the remaining transformers all cores are checked at one or two points on the excitation curve. Measurement of secondary resistance (sample) b. 50 Hz for one minute) e. j Capacitor Voltage Divider: a.1.1) b. b. Capacitance and tan delta measurement at power-frequency c. Routine tests for capacitor voltage transformers CPB IEC 61869-5.2. Ferro-resonance check j. Power-frequency withstand tests on the electromagnetic unit g. Routine tests for coupling capacitors CCB IEC 60358-1. STL provides a forum for international collaboration between testing organizations.2) c. The membership and supervision of SATS ensures the independency of the laboratory. h. with these testing resources.1) d. We are. j a. Power-frequency withstand tests on secondary windings i.1. Accuracy check (determinations of errors) ABB specific tests: Electromagnetic unit − − Sealing test − − Inspection of damping circuit. d. § 8. Capacitance and tan delta measurement at power-frequency (9.3.4.2 a.Test capabilities in Ludvika Our high resource laboratories (high power/ high voltage/environmental) in Ludvika are members of SATS (Scandinavian Association for Testing of Electric Power Equipment). able to claim that we are at the forefront in developing new and safe products for the 21st century.2. c. Tightness of capacitor voltage divider (9. SATS is a member of STL (Short Circuit Testing Liaison).1) Buyer’s Guide | Outdoor Instrument Transformers 67 . g. Power-frequency withstand test (9. Verification of terminal markings f. Measurement of partial discharge e. Tightness of capacitor voltage divider b. Power-frequency withstand test on low voltage terminal h. g Capacitor Voltage Transformer: i.2. Measurement of partial discharge (9. fig 508b Electromagnetic unit: e.3. f. Power-frequency withstand test d. § 7. l.2/50 µs − − Power frequency dry/wet Voltages − − Ratio (primary and secondary voltages) − − Reconnection (secondary) − − Voltage factor (Vf) and time Burden and accuracy − − Number of secondary winding(s) − − For each winding please state: Connection: Star or broken delta Burden/class − − Thermal limit burden (if requested) Special requirements − − Silicone rubber insulator (gray) − − Creepage distance (ABB standard: 25 mm/kV) − − Light gray porcelain (ABB standard: brown) − − Special primary terminal − − Special secondary terminals − − Secondary fuses − − Heater − − Anodized tank. − − Other requirements? 68 Outdoor Instrument Transformers | Buyer’s Guide .l. vertical transport (IMB 36-145) − − Horizontal transport (IMB 36-145) − − Other? Additional requirements − − Capacitive voltage tap − − Adapter (for replacing old type IMB) − − Ambient temperature − − Height above sea level if >1000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a. horizontal transport (EMF 123-170) − − Other requirements? Additional requirements − − Ambient temperature − − Height above sea level if >1000 m Please state “normal” system and test voltages according to actual standard when ≤ 1 000 m a.Ordering data Current transformer IMB The following information is required with your order: − − Quantity − − Standard/Customer specification − − Frequency − − Highest voltage for equipment −− Rated insulation level Test voltages − − Lightning impulse 1. terminal box and expansion system (IMB 36-170) − − 1-pack.s. terminal box and expansion system − − 1-pack vertical transport (EMF 52-84) − − 1-pack. − − Other requirements? Voltage transformer EMF The following information is required with your order: − − Quantity − − Standard/Customer specification − − Frequency − − Highest voltage for equipment − − Rated insulation level Test voltages − − Lightning impulse 1. Ith 1 sec (3 sec) − − Dynamic current. Idyn Burden and accuracy − − Number of cores − − For each core please state: −− Burden/class/overcurrent factor Special requirements − − Silicone rubber insulator (gray) − − Creepage distance (ABB standard: 25 mm/kV) −− Light gray porcelain (ABB standard: brown) − − Special primary terminals − − Special secondary terminals − − Heater −− Secondary overvoltage protection: (spark gaps.s. protection gaps) − − Anodized tank. wet) Currents − − Ratio (primary and secondary currents) − − Reconnection (primary or/and secondary) −− Rated continuous thermal current (Rf) − − Short time current.2/50 µs − − Power frequency dry/wet − − Switching surge 250/2500 µs (For Um ≥ 300 kV. s. −− Other requirements? Coupling Capacitor CCB The following information is required with your order: − − Quantity − − Standard/Customer specification − − Frequency − − Highest voltage for equipment − − Rated insulation level Test voltages − − Lightning impulse 1.high or extra high − − Ambient temperature − − Height above sea level if >1000 m Please state “normal” system and test voltages according to actual standard when ≤1 000 m a.l. − − Other requirements? Buyer’s Guide | Outdoor Instrument Transformers 69 .high or extra high − − Ambient temperature − − Height above sea level if >1 000 m Please state “normal” system and test voltages according to actual standard when ≤ 1 000 m a. wet) Voltages − − Ratio (primary and secondary voltages) − − Reconnection (secondary) − − Voltage factor FV (Vf) and time Burden and accuracy − − Number of secondary winding (s) − − For each winding please state: Connection: Star or broken delta Burden/class − − Thermal limit burden (if requested) Special requirements − − Silicone rubber insulator (gray) − − Creepage distance (ABB standard: 25 mm/kV) − − Light gray porcelain (ABB standard: brown) − − Special primary terminal − − Special secondary terminals − − Secondary fuses − − Heater − − Protection for PLC equipment − − Horizontal transport − − Other requirements? Additional requirements − − Capacitance .s.l. wet) Special requirements − − Silicone rubber insulator (gray) − − Creepage distance (ABB standard: 25 mm/kV) − − Light gray porcelain (ABB standard: brown) − − Special primary terminal Additional requirements − − Capacitance .Capacitor Voltage Transformer CPB The following information is required with your order: − − Quantity − − Standard/Customer specification − − Frequency − − Highest voltage for equipment − − Rated insulation level Test voltages − − Lightning impulse 1.2/50 µs − − Power frequency dry/wet − − Switching surge 250/2500 µs (For Um ≥ 300 kV.2/50 µs − − Power frequency dry/wet − − Switching surge 250/2500 µs (For Um ≥ 300 kV. Customer notes 70 Outdoor Instrument Transformers | Buyer’s Guide . Buyer’s Guide | Outdoor Instrument Transformers 71 . dimensions and data without prior notice. Outdoor Instrument Transformers. Publication 1HSM 9543 42-00en. We therefore reserve the right to change designs.transf@se. Photo: Hasse Eriksson .abb.Contact us ABB AB High Voltage Products SE-771 80 LUDVIKA.abb. Edition 7. Buyer’s Guide.com ©Copyright 2012 ABB All right reserved NOTE: ABB AB works continuously with product improvements. SWEDEN Phone: +46 (0)240 78 20 00 Fax: +46 (0)240 78 36 50 E-mail: instr.com www. 2012-09 Oil insulated.