DESEINTender Specification Volume-IV: Electrical Works 400 kV Substation CHAPTER-7 400 kV Substation 1.00.00 SYSTEM DESCRIPTION 400 kV substation comprising indoor gas insulated switchgear (GIS) and outdoor be provided for evacuation of n e t power manufacture, air insulated switchyard shall generated at the plant to the grid. The scope covers design, assembly, testing at manufacturer's works before despatch, packing, marking, shipping, erection, testing and commissioning of factory assembled, metal-enclosed, SF6 GIS, Gas Insulated Bus Ducts and ancillary equipments as specified hereunder. The GIS shall have one and a half circuit breaker configuration and will comprise following bays/ circuits: a) Two (2) Generator Transformer bays b) One (1) Start up transformer bay c) Four (4) Line bays d) Two (2) Bus VTs e) Two (2) Bus Reactor bays f) One (1) equipped bay for future GT g) Two (2) equipped bays for future lines. The switchgear shall be capable of future extension on both sides, without requiring a complete shutdown. 2.00.00 SCOPE OF SUPPLY 2.01.00 The scope of works under this package shall include but not be limited to complete project management, design, engineering, manufacture, shop testing, packing, loading, transportation to site, transit and storage, insurance, receipt, unloading, storage, transportation at site , erection, testing & commissioning of 400 kV GIS substation package as per the detailed scope mentioned herein under. Building for housing the GIS and EOT crane for handling GIS sections are also included in the scope of the CONTRACTOR. The EOT crane shall be sized to 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. No. CE/C/P&E/EE/E/OT. No. 03/2013-14 Vol. IV: Electrical Works:165 DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation handle the heaviest section of the GIS. Adequate space for maintenance shall be provided inside the GIS building, in addition to the space required for housing the switchgear, control/ protection/ metering and communication equipment, air conditioning and ventilation, illumination, low and high frequency earthing, control room, offices and stores, electrical laboratory etc. and required outdoor structures, gantries, lightning protection, etc. Scope shall also include laying of single / multi mode fibre optic cable (no. of cores shall be decided during detailed engineering) upto 400 kV line side gantry including supply of junction boxes, splicing of fibre optic cable at both ends and supply of necessary multiplexers and converters, industrial grade Ethernet switches, etc. Further the scope shall include all equipments/ components/tools/spares required to make a complete, reliable and trouble free functional system, even if not specifically listed in this specification. The scope also includes special training of owner’s testing, operation and maintenance staff. The required no. of CTs, VTs, SAs, circuit breakers, disconnector switches, earthing switches and all other accessories shall be provided. 2.02.00 GENERAL TECHNICAL PARTICULARS FOR EHV SYSTEM (a) Rated voltage 400 kV (b) Rated frequency Rated short time current withstand capacity Rated one minute power frequency withstand voltage 50 Hz (c) 63 kA rms for one (1) second a) 650 kV rms between live terminals and earth b) 815 kV rms across isolating distance a) 1425 kVp between live terminals (d) (e) Rated lightning impulse withstand voltage Rated Switching Impulse withstand voltage Phase to phase spacing b) 1425 (+240) kVp across isolating distance & earth. a) 1575 kVp (between phases) b) 900 (+345) (across isolating distance) (f) (g) 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. No. CE/C/P&E/EE/E/OT. No. 03/2013-14 Vol. IV: Electrical Works:166 DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 4000 mm Adequate to withstand 100 kg static load as (h) Rated terminal load well as wind, seismic and short circuit forces without impairing reliability or current carrying capacity. (i) System neutral earthing Effectively earthed (j) Seismic acceleration 0.16 g horizontal Adequate so that lowest part of support (k) Support structure height insulator of equipment is 2550 mm (minimum) from ground and/or plinth level. (l) (m) Creepage distance Electrical Clearances Minimum 31 mm / kV Clearances shall be as given below and as per relevant statutory rules/codes. 1. Phase to earth 3500 mm 2. Phase to phase 4000 mm 3. Sectional clearance 6500 mm 4. Ground clearance 8000 mm 2.02.03 Balance equipments / accessories like bus post insulators, clamps & connectors, spacers, aluminum tubes, ACSR Conductors, ground wire, insulators & hardware, gantry and equipment structures, bay marshaling kiosks as required to complete the 400 kV GIS Substation package. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. No. CE/C/P&E/EE/E/OT. No. 03/2013-14 Vol. IV: Electrical Works:167 2. The plant shall be complete with compressor.06 Stringing between Generator transformer HV (400 kV) bushing and switchyard gantry with all accessories along with end termination at Generator transformer end. 2. The capacity of the temporary storage facilities shall at least be sufficient for storing the maximum quantity of gas that could be removed when carrying out maintenance or repair work on any pieces of the switchgear and associated equipment + 10% extra SF6. A wheeled maintenance device shall be supplied with pressure vessel.02. flexible tubes and valves for coupling up to the Switchgear for filling or evacuating all the gases. 03/2013-14 Vol.05 % per year. IV: Electrical Works:168 . c) Line Protection relay panels consisting of BPU’s with Main -1 & Main -2 Distance protections. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.07 All jumpers and connections to GIS.02. SA.02.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation SF6 Gas Filling & Evacuation Plant: 2. vacuum pump. b) Islanding protection scheme with three channels of under frequency and df/dt functions. 2. vacuum pump and all required gauges and fittings for the service of switchgear.02. couplings. CE/C/P&E/EE/E/OT. dust and moisture filter. LV and 400 kV Gantry. d) Generator transformer Protection relay panels consisting of BPU. No.02.04 This shall include all the necessary gas cylinders for temporarily storing the evacuated SF6 gas.05 Breaker operation analyzer with transducers. No. all necessary pipes. Manufacturer shall guarantee that the pressure loss within each individual gas filled compartment will not be more than 0.08 Protection & Relay panels shall broadly consist of the following: a) Bus bar Protection Relay panels for Main & Check zones for each 400 kV Bus. 2. Phantom Load sets. b) Fully dual redundant communication bus. Current. No. No.02. a) One Remote HMI at Central control room along with connectivity and printers. f) All necessary licensed software for communication with Numerical relays. 03/2013-14 Vol.02. marshalling panels. time synchronization equipment for switchyard control room. engineering work stations at the switchyard control room. c) SAS I/O Cabinets. scanners and consumables like paper. 2. and printer ribbons shall be supplied. Test plugs & Relay tool kits.11 Stand alone Disturbance recorder for each Switchyard bay.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation e) One Portable dynamic Relay test kit.12 Redundant Two (2).02. HMI.02.09 Switchyard Automation system (SAS) shall include but not limited to the following: a) Bay controller units (BCU) for each switchyard bay. CE/C/P&E/EE/E/OT. 2. b) All required printers. 2. d) Transducers for transmitting electrical analog quantities (Voltage.10 Availability based tariff (ABT) Compatible energy meters for each 400 kV line bay & each Generator transformer bay. IV: Electrical Works:169 . frequency etc) e) All necessary Remote Terminal units (RTU). BPU along with dedicated engineering work station. Active & reactive Power. 2. toners. This equipment shall be synchronized with Station GPS 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. 14 Set of Special Tools & Tackles. complete with sensors and integration of the systems with plant SCADA system..02. Contractors shall reserve five (5) No.00 All the equipment/system shall in general confirm to the latest addition of relevant National and International codes & Standards especially Indian Statutory Regulations.02. 2. 2.15 Recommended spares for 3 years of operation & maintenance. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. voltage..02.01. No.18 Any other item(s) not mentioned specifically but necessary for the satisfactory completion of scope of supply as per accepted standards. SF6 gas shall be supplied in returnable cylinders. IV: Electrical Works:170 . etc.17 The first filling of SF6 gas for the equipment supplied plus an additional quantity sufficient for conducting all tests on equipment at the site before placing it into successful operation. operating parameters such as current.00 GENERAL DESIGN REQUIREMENTS OF 400 kV INDOOR GIS & OUTDOOR SWITCHYARD 4.02.13 2. 2.00. 2. leakage. Start up & Commissioning spares. No.00. etc.00 CODES AND STANDARDS 3. 3. The Equipment/material/systems confirming to other equivalent national and international standards shall also be considered provided the same ensures equal or better features compared to standards listed in Annexure A. moisture.02. CE/C/P&E/EE/E/OT. temperature. 63A feeders for HVAC System & EOT Crane.00 The layout of the switchyard shall be such that adequate space for maintenance of prime equipment like circuit breakers and current transformers is available.16 Continuous on-line monitoring and diagnostics systems to monitor gas density. gas pressure. 03/2013-14 Vol. 4. 2. In addition about 10 % spare gas (of total used in GIS) by weight shall be supplied in 40 litre non returnable cylinders.02. The GIS bay equipments shall be viewable from the switchyard control room.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 415 V AC Distribution boards required for complete 400 kV GIS package.01. 00 The switchgear assembly shall be suitable for installation in indoor area.07. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.00 The LA shall be connected to earth pit through pipe electrodes.00 Marshalling Kiosk -One (1) marshalling kiosk shall be provided for each bay. No.07.02.00 4. 4.02 The connections from LA to transformer shall be through shortest electrical distance.00 Corona rings & corona bells shall be used wherever required and same shall be of non-magnetic material. 4.00 Generator Transformer Connections: 4.08.05. IV: Electrical Works:171 . 4.00 The connectors for termination of conductor on equipment shall be either of rigid or expansion type suitable for aluminium tube or Twin/Quad Moose ACSR conductor with sub-conductor spacing.07. 4.01 The generator overhead stringing shall be brought to a bus post insulator and then connected to the transformer bushing so as to avoid mechanical forces on the LA.04. 4. Constructional features shall be selected not only to withstand satisfactorily the specified atmospheric conditions under Project Information but allow for thermal expansion during its normal use. No. 4. 4.06. batteries with cable trays and service transformers on the Ground floor. The requirements regarding RIV and corona extinction voltage shall include terminal fittings.00 The switchyard area shall have at two locations. CE/C/P&E/EE/E/OT. 4. 4.10. 03/2013-14 Vol.00 All tension insulator strings shall have double tension string arrangement.09.03. storm and drain water pit along with redundant drain pumps.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The typical layout for 400 kV GIS substation and control room shall be a two storied building housing MCCs. 4.00. 03/2013-14 Vol. No. This section also covers about the outdoor switchyard equipment like Surge arrestors. 6.00 Clearance between walls to equipment shall be minimum 15 ft on both sides. The section also covers requirements about ABT metering & Fault Disturbance recorders.00 Control and relay panel and SAS system for the switchyard shall be housed in switchyard control building. instrument transformers.01.14. disconnections switches are covered in Annexure A.13. CE/C/P&E/EE/E/OT.00 DEGREE OF PROTECTION Degree of protection for various enclosures as per IS: 13947 shall be considered. 6.00 4.00.15.00 The detailed technical requirements of Substation Automation system (SAS) & Protection panels of 400 kV GIS system is covered in Annexure B.00 The detailed technical requirements of 400 kV GIS equipments like Circuit breakers.11.16. 4. IV: Electrical Works:172 .DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The GIS floor and control relay panel room floor shall be of epoxy. 5. No. 4.00 The building shall have following minimum provisions: a) b) c) d) e) f) g) Maintenance engineer room (40 ft x 20 ft) Battery Room AHU Room Toilets (one for officers near switchyard control room/ for workers on ground floor) Conference room (20 Ft X 15 Ft with modular furniture) Air conditioned Relay & SCADA Room Air conditioned control room. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.00 DETAILED TECHNICAL SPECIFICATIONS 6. String insulators and all miscellaneous items. 4. Disconnectors.00 Necessary covered pathways shall be made for GIS and other adjacent buildings. The outdoor switchyard shall be of PCC flooring 4.12.02.00 The switchyard and control room shall have provision for inclusion of future line bays. 7. High speed earth switches shall be provided where ever required. The modular design shall be capable of extension on either side without any major dismantling. mechanism cabinets. Constructional features shall be selected not only to withstand satisfactorily the specified atmospheric conditions under Project Information but allow for thermal expansion during its normal use. 7. 7. Materials and components not specifically stated in this specification but are necessary for the satisfactory operation of the equipment shall be deemed to be included unless specifically excluded and shall be supplied at no extra cost. All components of the same rating and construction shall be interchangeable.04 Equipment shall be complete with all necessary supports.00. No.01 The GIS shall comply with IEC 62271-203/60694. The gas filled enclosures shall conform to relevant pressure vessel code of ANSI/IEC. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. catwalks.05 The GIS shall be modular in structure and shall be housed indoor.00. CE/C/P&E/EE/E/OT. No. The terminations of Generator transformer shall be with over head conductors. IV: Electrical Works:173 .00.07 The lines shall be terminated on takeoff gantry.06 The equipment and connections within each compartment shall be arranged so as to allow removal and replacement of any section both during normal and abnormal (fault) working conditions with minimum disturbance to adjacent pressurized sections. 7.03 Gas enclosures shall be designed to withstand high vacuum by provision of suitable reinforcement(s) at all the required locations. 7. staircases. ladders. The modules shall be single phase encapsulated and provided with hooks for handling by overhead cranes to be provided in the building.00. 7.00 DESIGN & CONSTRUCTION REQUIREMENTS FOR 400 kV GIS SYSTEM 7. for each bay and it shall be of extensible design.00. platforms.00. internal cable raceways etc. The take off from GIS shall be through bushing and the post insulator. 03/2013-14 Vol. The general requirements and special requirements for Gas insulated switchgear are given in this section.02 The switchgear assembly shall be suitable for installation in indoor area.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 7.00.00. surge arrestor shall be outdoor type. Gas barrier insulators and support insulators shall have the same basis of design.13 Inspection windows / access openings shall be provided at the switchgear to ensure that each switchgear component can be inspected / monitored during installation and future maintenance. 7. vacuum on one side and maximum gas pressure on other side.00. The enclosure surface shall be painted suitably for protection against deterioration due to corrosion. Interior finishing shall not contain any substances which could contaminate the SF6 gas and its insulating properties over a period of time. Each section shall have plug-in or easily removable connection pieces to allow easy replacement of any component with minimum disturbance to the remainder of the equipment. CE/C/P&E/EE/E/OT.10 The enclosures shall be such as to eliminate dangerous electrostatic charges. The section barriers and enclosure walls shall be gas tight (permissible leakage rate of 0. 7. humidity.08 7. The support insulator shall have holes on both sides for proper flow of gas. The modular design shall offer maximum flexibility from the design. The wall thickness of the enclosure shall be based on the design pressure as well as considering a burn through duration of 0. 7. The enclosures shall be sectionalized with gas tight barriers between sections or compartments.5 %) per year. 7. IV: Electrical Works:174 . No. operation and maintenance point of view.00. 7. 03/2013-14 Vol.14 The manufacturer shall guarantee that the pressure loss within each individual gas filled compartment shall not be more than half percent (0. temperature ageing. and attack from fungus.00. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.11 The support insulators and section barriers shall be free from voids and shall be so designed so as to reduce the electrical stresses to the minimum.e.5% per annum) and capable of withstanding the maximum pressure differential i. rodents. 7.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The bus bars shall be rated for the duty specified and current rating shall be derived considering maximum possibilities.1 sec.00.00.09 The metal enclosures for the GIS shall be made up of non magnetic material and shall be suitable designed and fabricated from mechanical and electromagnetic aspects.00. The enclosures shall meet the pressure vessel requirement as per ASME or equivalent. No.12 Minimum assembly work is envisaged during installation.00. All interlocks that will prevent potentially dangerous mal-operations shall be provided with both electrical & mechanical. 7. filling valve and safety diaphragm.00. 03/2013-14 Vol.00.00. 7. and for checking the gas pressure /density. The enclosure shall be designed to practically eliminate the external electromagnetic field and thereby electromagnetic stresses even under short circuit conditions. density switches. The enclosure shall be sized for carrying induced current equal to the rated current of bus. logical arrangement and adequate accessibility to all external components. which will provide an alarm signal in case of pressure drop before the allowable minimum pressure is reached. 7.00. No. 7. CE/C/P&E/EE/E/OT.21 The enclosure surface shall be smooth with no projection or irregularities which may cause visible corona. IV: Electrical Works:175 .00.20 It should be impossible to unwillingly touch live parts of the switchgear. gas filling.22 The enclosure shall be of continuous design and shall confirm to clause 10 of latest edition of IEEE 80. No.16 Each gas compartment shall be fitted with pressure relief device for evacuating. 7. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.00.19 The arrangement of individual switchgear bays shall be such so as to have optimum space saving. No corona shall be visible in complete darkness when the equipment is subjected to specified test voltage. 7. The filters shall be capable of absorbing any water vapour as well as any byproducts of SF6 during interruption.17 The thermal rating of all current carrying parts shall be minimum one second for the rated symmetrical short circuit current.16 The internal components shall be maintenance free for at least 10 years.00.15 7. Routine replacements of insulating gas shall not be required in intervals of less than ten years. Gas pressure and density shall be continuously monitored and displayed by a suitable temperature compensated instrument. 7. neat. 7.00.00.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation Each Gas filled compartment shall be equipped with static filters.18 The manufacturer should propose appropriate methods for determination of location of fault. Viewing port shall be of a type whereby the open/close position can be checked without any danger to the eyes should a flashover occur at that time.02. associated auxiliary. The secondary terminals shall be brought out in a dustproof enclosure.23 The average intensity of electromagnetic field shall not be more than 50 micro tesla. 7. isolators and earth switches. b) The contractor shall offer equipment fitted with viewing ports on each isolator and earth switch for viewing and illuminating the position of switch. The contractor shall furnish all calculations and documents in support of above during detailed engineering. monitoring equipment and CT/VT wiring from the terminal boxes shall be wired up to the local control panels. isolators and earth switches shall have externally mounted indicators to show clearly the ‘open’ and ‘Close’ positions.00 Local Control Panel 7.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 7.00 Indication & Verification of Switch position: a) All circuit breakers.24 The CT’’s for GIS shall be of external or internal mounted type with SF6 Gas insulated or cast resin type. Theses panels shall also house the various relays. Trip normal & close switches is also to be provided. This shall consist of grounding pads to be connected the ground mat risers with in the vicinity of the equipment. No. 7. No. 7. The positions shall be designated as ‘Open ‘and ‘Close ‘. The contacts. CE/C/P&E/EE/E/OT.00. 7. 7. to realise specified interlock requirement among circuit breakers.01 Individual local control panels for each circuit shall be supplied to facilitate local control of circuit breakers.25 The switchgear shall have provision for connection with ground mat risers.02.00. 03/2013-14 Vol.00. signals and conditions originating from/going to the switchgear. the level of noise emitted by the switchgear should not exceed the prescribed value in the relevant standard. The indications shall be mechanically coupled directly to the main contact operating drive or linkage and shall be mounted in a position where they are clearly visible.00. timers etc. isolators and earth switches. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. IV: Electrical Works:176 .01.26 During an operation. Use of color code alone to differentiate position indication is not acceptable. 05. No. air break.03 Mimic diagrams shall be provided on local control panels. Synchronizing trolley 7. No. Discrepancy switches and semaphore indicator shall be provided on the mimic diagram as applicable. 7.01 Switches/MCBs Switches/MCBs shall be hand operated. Control 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. 7. CE/C/P&E/EE/E/OT. 7. 03/2013-14 Vol. heavy duty.02. 7. The mimic strips shall be made of anodised aluminium and shall be screwed onto the panel.04. IV: Electrical Works:177 . The width of mimic strip shall not be less than 5 mm.02.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 7.04.03.05.03.02 It shall be the responsibility of the Manufacturer to fully coordinate the overload and short circuit tripping of the MCBs with the sub circuit MCBs/fuses to provide satisfactory discrimination.00 7. tripping alarms and auxiliary devices.00 7. 7.03.03.03. quick break type conforming to applicable IEC standards. ‘CLOSE’ and ‘TRIP’ circuits shall be kept isolated to their final mechanical or electrical actuators.04. quick make.01 Control & Auxiliary Power Supply Control and selector switches shall be of the rotary type provided with properly designated escutcheon plates clearly marked to show the operating positions. Colour of the various voltages of the mimic bus shall be subjected to the approval of the Purchaser /comply with relevant IEC standard.02 Completely separate and isolated circuit shall be used for operating mechanism control.03 Switch handle shall have provision for locking in both fully open and fully closed positions. Trip circuits shall have individual monitoring facilities. 1 no. MCBs shall preferably be provided with suitable locking facility. 7. 7.04 Synchronizing facility shall be provided in Local Control Panel.02 Fuses shall be provided with visible operation indicators to show that they have operated.04 Single throw isolating switches for complete isolation of the DC control circuits shall be provided.01 Fuses Only HRC fuses shall be used & shall have a rupturing capacity of not less than 46 kA at 220V DC.02.00 7. 7. Common supply bus shall be formed in the cubicle and then power supply shall be distributed to individual equipment through MCBs/fuses. with pistol grip handle. 7. The number of contacts and their operation in each switch position shall be as per the requirements of the connected circuit.06. installed in associated local control panel. 7. The local/remote selector switch shall be lockable in both positions. etc. 7. CE/C/P&E/EE/E/OT. using external resistors. Colour of these switches shall be black. Theses shall be on 240 V single ph AC supply.04 D. & A. 7.06.05. spring return to normal. monitoring and blocking functions of particular circuit element shall be numerical. No. No. Selector switches shall have stay put contacts with oval handles.06. The switches shall be rated for minimum 10 A at 240 AC and 1 A inductive break at specified DC voltage. voltage relays as required for control and protection shall be mounted inside the local control panel. Separate circuits with switches.01 Relays for various controls.06.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation switches shall have momentary contacts. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. Voltage operator relays shall have sufficient thermal capacity for continuous energization.C. power supply shall be done in a manner which will enable isolation of individual equipment.04 Each relay shall be provided with at least 2 NO and 2 NC potential free contacts for external use. 03/2013-14 Vol. time-delay relays. 7. system ground or induced surges.02 7.06. 7. of adequate rating shall be provided for control of space heater. 7.06.00 Relays 7. All relay shall have dust tight covers.05. if necessary.C. fuses. IV: Electrical Works:178 .C.03 Auxiliary relays shall be rated to operate satisfactorily between 80% and 110% of the specified rated voltage.05 Coils of all the relays shall be adequately rated to avoid spurious operation of relays on D. lighting and power receptacle.03 All control equipment shall be suitable for operation on specified DC system. unless specified otherwise.05.02 Necessary auxiliary relays for alarm. 7. The heaters shall be suitable for operation on a 240V.00 Internal Wiring Cabinets/Panels shall be supplied completely wired ready for external connections at the terminal blocks. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. tinned copper conductors of sizes not smaller than 1.00 Indicating Lamps Indication lamps shall be of cluster LED type. 0 HRC fuse on phase or a single-pole MCB with overload and short circuit protection.5 sq. 7. engraved with functions. the minimum size shall be 4 sq. Heaters shall be complete with rotary type ON-OFF switch. CE/C/P&E/EE/E/OT. Unless otherwise specified. The insulation shall be halogen free and flame retardant. No. CT and VT circuits shall be wired with stranded copper conductor of size not smaller than 2.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 7. They shall be provided with integral escutcheon plates. 03/2013-14 Vol. control alarm and indication circuits shall be wired with stranded.10.5 sq. link on the neutral and a thermostat to cut off the heater at 45 C. IV: Electrical Works:179 . 1 phase 50 Hz supply.08.07.09.06. Push button contacts shall be rated for 10 A at 240 V AC and 1 A inductive breaking at specified DC voltage. 7. 0 7.mm.06 All relays shall be tropicalised and shall be suitable for maximum ambient temperature of 50 C. All wiring shall be carried out with wires of 650 V grade.07 Make and type of relay shall be subject to approval of the Purchaser.mm. stranded copper conductors.06. 7.00 Space Heater Strip type space heaters of adequate capacity shall be provided inside each cabinet/control panel. Power circuits shall be wired with stranded aluminum conductors of adequate sizes to suit the rated current.mm.00 Push Buttons All push buttons shall be of push to actuate type having 2 NO and 2 NC self-reset contacts. No. Control wiring shall be protected against mechanical damage.10.11. Low-Low Gas pressure for each gas compartment of the bay.00 Local Alarm/Annunciation 7.02 CT/PT terminals shall have disconnecting links for test purpose and other device terminals shall be of stud type. CE/C/P&E/EE/E/OT. readily accessible and connected to equipment terminals and terminal blocks.10. 7.11.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation Engraved identification ferrules. minimum rating shall be 10 A.05 20% spare terminals shall also provided. No. Hydraulic motor excessive start. No.10. 7. Terminals shall be adequately rated for the circuit current. Hydraulic motor run excessive Hydraulic motor overload Hydraulic motor circuit trouble Low hydraulic pressure LV-Low hydraulic pressure Low hydraulic oil level 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. The alarm windows shall have provision for differentiating cleared and uncleared faults and flashing for new faults. 7.01 Window type alarm annunciation shall be provided on local control panels of each bay for the specified abnormal conditions. marked to correspond with the wiring diagram shall be fitted at both ends of each wire.04 Wiring shall be colour coded and be firmly supported. 7.10.11. neatly installed by lacing and taping.03 The wire terminations shall be made with solder less crimping type of tinned copper lugs. 7. IV: Electrical Works:180 . 03/2013-14 Vol. 7. Halogen free. flame retardant plastic wiring channels/throughs with strap on covers shall be used for this purpose. High gas pressure for each gas compartment of the bay.10.01 7. All wiring shall be terminated on terminal blocks.02 Windows for the following unhealthy conditions shall be provided: a) b) c) d) e) f) g) h) i) j) Low Gas pressure for each gas compartment of the bay. NOTE: (Serial no.12.00. The earthing terminal shall have clamping screw or bolt of at least 12mm for connection to earthing conductor. as felt necessary for annunciation during detailed engineering.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation k) l) m) Breaker pole discrepancy Isolator open/close incomplete Control supply fails. 8.03.11. 8.12. a metal pouch shall be provided along with a copy of as built drawings of the respective panel. 7. reclose blocked. closing blocked and tripping shall be provided. No. the manufacturer may add any other condition. CE/C/P&E/EE/E/OT. all four stages breaker operation due to hydraulic pressures – pressure low.01 Every GIS equipment and devices mounted in the cabinet/control panel shall be provided with individual labels with equipment designation/rating.01.00 It shall be the responsibility of the Manufacturer to provide a sufficient number of earth connections so that dangerous voltages are not induced in the enclosure by the fault currents circulating in the inner conductor. the cabinet/control panel shall be provided on the front with a non-rusting label engraved with the designation of the cabinet/control panel.12.) 7. 03/2013-14 Vol. In case of auto reclosing feeders. The connecting point shall be marked with the ‘Protection Earthing Symbol’ as per IEC60417.02 Inside the door.00 High frequency earthing for GIS shall be provided. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. No. 8. IV: Electrical Works:181 . Also.00 Labels and Diagram Plate 7.00 EARTHING 8. e) to j) shall be applicable only in case of hydraulic operated breaker.02.03 In addition to the above. 7.00 The CONTRACTOR shall provide a “Main Ground Bus” for the specified short circuit current magnitude and duration to which all intentionally earthed parts of the assembly shall be bonded. the power cable sheath grounds should be tied to the grounding system via connections that are separated from the GIS enclosures. cubicles. CE/C/P&E/EE/E/OT.04. 8. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. clause 10.10. 8.08.00 The design of the earthing system shall be such as to ensure the safety and protection of all operating and maintenance personnel under all normal and fault conditions.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation Provision shall be made for future extension and/or bonding to ground bus of other switchgear.12. IV: Electrical Works:182 .00 The contractor shall furnish full details of the circulating currents expected to flow from the switchgear metal cladding to enable the Purchaser to design the main earthing grid.8. 8. 03/2013-14 Vol.06.07 IEEE-80 shall be followed.00 While calculating the touch voltage. No. No.An application guide”. the bus enclosure design should ensure that no significant voltage differences exists between individual enclosure sections and that neither the supporting structures nor any part of the grounding sytems is adversely influenced by the flow of induced currents. The design of cable terminations should be such that an isolating air gap or proper insulation elements are provided. The earthing of GIS shall be as per the standard CIGRE -44 “Earthing of GIS.00 The GIS building shall have a simple monolithic concrete steel reinforced slab. kiosks and boxes shall be solidly bonded to the earthing system.11.00 Every section of the SF6 switchgear equipment including all panels.05. 8. 8.00 To avoid the circulation of enclosure currents.00 In addition to bonding and grounding of GIS enclosures ground mats shall be provided that are connected to GIS structures and grounded. The reinforcing steel mesh should be tied to the common ground bus (main ground bus) in order to maintain the same potential level of GIS enclosures and the structural steel of the foundation.07. 8.00 When grounded at the designated points. 8.00 8. 8.09. by at least two independent leads. 03/2013-14 Vol.00. IV: Electrical Works:183 . material and workmanship and shall upon written notice from the OWNER. b) CONTRACTOR shall furnish without tolerance the guaranteed figures for the items being supplied under this package in the Performance guarantee schedule.00. re-testing shall be carried out by CONTRACTOR till the satisfactory performance in the opinion of OWNER is achieved. within a time period decided by the OWNER. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. CE/C/P&E/EE/E/OT. fully rectify. After rectification. the CONTRACTOR is not able to demonstrate the guarantees by re-testing. No extra cost shall be charged to the OWNER for such rectification and re-testing. However. No. No.00 QUALITY ASSURANCE.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation PERFORMANCE GUARANTEE 9. 10. INSPECTION & TESTING The Contractor shall carry out a comprehensive inspection and testing program during manufacture of the equipment. if even after modification and rectification. free of expenses to the OWNER such defects as developed under the normal use of the said equipment within the period of guarantee / warranty. OWNER at his discretion may reject the equipment and recover the paymentalready made or accept the equipment only after deducting from the contract price an amount equivalent to the deficiency of the equipment system as assessed by the OWNER. d) The Contractor shall further guarantee that the equipment provided by him shall be free from the defects in design. c) CONTRACTOR shall conduct the performance guarantee testing in line with the stipulations of specification and shortfall of guaranteed ratings/defect should be satisfactorily rectified and replaced.00 a) The CONTRACTOR shall guarantee the successful and satisfactory operation of the equipment furnished under this contract and shall meet the ratings and performance requirements as stipulated in this specification. Tests to prove the ability of the main and earthing circuits to carry the rated peak and the rated short-time withstand current. Tests to prove the satisfactory operation of the included switching devices.00. IV: Electrical Works:184 . 4. Verification of the degree of protection of the enclosure. Additional tests on auxiliary and control circuits. 2. Tests to verify the making and breaking capacity of the included switching devices. 6. Tests on partitions.00 TYPE TESTS 1. Tests to prove the temperature rise of any part of the equipment and measurement of the resistance of the main circuit. 9. No. No. Tests to verify the insulation level of the equipment and dielectric tests on auxiliary circuits. CE/C/P&E/EE/E/OT. The Contractor shall also prepare a comprehensive inspection and testing program for all bought out/sub-contracted items and shall submit the same to the Owner.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The makes of all major bought out items shall be subject to Owner’s approval. 7. Tests to prove the strength of enclosures. Electromagnetic compatibility tests (EMC) 11. GIS shall be completely assembled with all fittings & accessories meant for the particular breaker before offering for inspection & testing by Owner. Tests to prove the radio interference voltage (RIV) level (if applicable). 5. 03/2013-14 Vol. 11. 3. Gas tightness tests 10. 8. 12.01.00 LIST OF TESTS TO BE CONDUCTED FOR 400 kV GIS PACKAGE 11. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. 00 ROUTINE TESTS All the acceptance and routine tests as per the specification and the relevant standards shall be carried out. Tests to prove performance under thermal cycling and gas tightness tests on Insulators. Check of auxiliary and control circuit 2000 V for 1 minute. Power frequency voltage dry test of main circuit. Operating test of motor and hydraulic or pressure mechanism etc. 14. b) Gas leakage test on all modules after assembly. 2) 3) 4) d) Measurement of resistance Check of auxiliary and control circuit (2000 V for 1 minute) Power frequency voltage dry test of main circuit. Visual check of ten operating cycle at specified maximum voltage. 15. Visual check of ten operating cycle at specified minimum voltage. IV: Electrical Works:185 . Measurement of resistance of main circuit. timing test. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. The routine tests inline with IEC shall be conducted on GIS & shall also include the following: a) Pressure test on all individual enclosures. No. No. For all outdoor switchyard equipment. Charges for these shall be deemed to be included in the equipment price. 03/2013-14 Vol. c) Circuit breaker tests 1) All mechanical operation like visual checks. routine tests shall be conducted as per relevant IEC standards. operation of magnetic release. Tests on disconnect switches and ground switches: 1) 2) 3) 4) 5) 6) Visual check of fifty operating cycles at rated supply voltage. CE/C/P&E/EE/E/OT. Corrosion test on earthing connections (if applicable). Tests to prove the satisfactory operation at limit temperatures.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 13. 11.02. No. Power frequency withstand tests on secondary windings. IV: Electrical Works:186 . Partial discharge test 2) 3) Measurement of the resistance of the main circuit Gas leakage test i) All test on local control cabinets as per relevant IEC. CE/C/P&E/EE/E/OT. phase). 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.2: 1) 2) 3) 4) 5) Verification of terminal markings. II. No.2: 1) 2) 3) 4) 5) 6) Verification of terminal markings. Inter turn over voltage test Power frequency withstand voltage test on primary voltage measurement of partial discharge. Power frequency voltage test Lightening Impulse withstand voltage test III. Switching Impulse withstand voltage test IV. clause 9. 03/2013-14 Vol.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation e) Current transformer tests as per IEC 185. Test for accuracy g) Pressure and gas tightness test h) Tests on complete assembled feeder bay: 1) Dielectric voltage withstand I. 6) Test for accuracy f) Potential transformer tests as per IEC 186 clause 10. Power frequency withstand tests between sections Induced over voltage withstand test Measurement of partial discharges (150% of rated max. Power frequency withstand tests between sections. Power frequency withstand tests on secondary windings. CE/C/P&E/EE/E/OT. 03/2013-14 Vol. isolating and grounding switches and high speed grounding switches. Power frequency test of auxiliary & control circuit (2kV rms for 1 minute).DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation FIELD TESTS 11. isolators and grounding switches. Voltage tests on the main circuit as per IEC 517.01. The testing equipment including high voltage testing kit shall be arranged by contractor which may be taken back by the Contractor. The detailed requirement of operational & pre-FAT tests as well as FAT test (Integrated Test) is given in this Section.01 Factory Acceptance Tests (FAT) for Substation Automation system All equipment furnished under this specification shall be subjected to test by authorized Quality assurance personnel of the Contractor and Owner’s representatives during manufacture. TESTS FOR SUBSTATION AUTOMATION SYSTEM (SAS) 12. No.00 12. Insulation resistance measurement DC resistance measurement of the main circuit. No. the same shall be repaired or equipment shall be replaced by contractor.00 Before assembly and installation. all parts of switch gear shall be checked properly and during inspection if any damage is found.01.00 Gas leakage test. Gas density monitor check Inter lock test Measurement of moisture content Manual operating check of circuit breakers.03. d) e) f) g) h) i) j) k) l) 12. IV: Electrical Works:187 .00. checks and verifications Mechanical operation tests of circuit breakers. The following field tests shall be performed: a) Dielectric Test 1) Power frequency voltage withstand test 2) Partial discharge measurement test b) c) Visual inspection. erection and on completion. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. After installation complete assembly shall be field tested as per relevant IEC. cleanliness and state of physical condition as applicable.01 Factory Acceptance Tests (FAT) shall include all tests required to fully demonstrate to Owner’s satisfaction that each equipment/sub-system/system as well as software modules furnished as per this specification as well as SAS as a whole. d) Contractor shall conduct all tests as per requirements of clause “Factory Acceptance Tests” to fully satisfy himself regarding completeness of the system and full compliance with specification requirements for SAS as a whole as well as for individual components/ software module. fully meets the functional.02. c) The Contractor shall conduct a point by point wiring continuity check at every input and output and verify that the wiring connections agree with the documentation. proper assembly. IV: Electrical Works:188 . CE/C/P&E/EE/E/OT. parametric and other requirements of this specification and Owner’s approved drawings/documents under all operating regimes. 03/2013-14 Vol. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. even if the FAT requires tests for only some smaller percentages. It shall be accompanied by a very detailed report. No. proper operation.02. This test will be done for 100% samples. tests and component failures.00 Operational and Pre-FAT Tests a) The authorized quality assurance personnel of the Contractor shall conduct all tests as per the requirements and fully satisfy themselves regarding completeness of hardware.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation 12. in a log form. No. but shall detail all system. software and full compliance with specification requirements by all equipment/sub-systems and the system as a whole before sending notification for FAT to the Owner. of the performance of all pre-FAT Tests. e) The pre-FAT report shall be in the format of FAT procedure as approved by the Owner. b) Each individual item of equipment/ sub-system/ software package furnished by the Contractor as well as the complete system as per this specification shall be inspected and tested by the Contractor at his works for full compliance with specification requirements. 12. These reports shall list not only the successfully completed tests. completeness. the Contractor shall provide a PCbased I/O generator.01 Site / Commissioning Tests of Substation Automation system Site tests shall include all tests to be carried out at site upon receipt of equipment. 12.03 The Contractor shall submit a detailed FAT procedure for Owner’s approval during detailed engineering stage based on the above guidelines. It shall include but not be limited to testing calibration and pre-commissioning trials. calibration records in owner approved formats.02. No. which will be connected. The FAT procedure to be submitted by the Contractor shall be detailed and exhaustive enough such that Owner is satisfied that all the SAS System specification requirements and features are being tested and the system meets these requirements.03. 12. but not limited to the following categories: a) b) c) d) e) f) g) Pre power on checks Power on checks Hardware tests Functional tests Parametric tests Specific tests on electronic hardware Power failure auto-restart tests 12.00 12. IV: Electrical Works:189 . These tests shall be divided into. to the BCUs directly bypassing the I/O modules. CE/C/P&E/EE/E/OT.03.02.02 12.03. 03/2013-14 Vol. and these shall be countersigned by authorized Quality assurance personnel of the Contractor supervising these works.04 For integrated testing of the total SAS system. This will help in generating desired rate of I/O to test various BCU and HMI functionality under worst case loading conditions. as a minimum.02 The Contractor shall maintain all tests. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.02.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The Factory Acceptance Tests (FAT) shall include all reasonable exercises which the combination of equipment and software can be expected to perform. start up tests. No. trial operation and performance and guarantee tests. 12. 9 percent availability for a continuous period of 180 days.04 The site / commissioning tests shall be categorized under following categories: a) b) c) d) e) Start up tests Calibration checks Pre-commissioning tests Trial Operation Availability Tests 12. peripherals device or process I/O card etc.03. If the accrued down time exceeds 0. CE/C/P&E/EE/E/OT. Loss of function for not more than 5% of the points shall be treated as partial unavailability and the corresponding outage time shall be weighted with respect to the function and the percentage of the points for which the function is unavailable. No.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation The Contractor shall maintain master checklists to ensure that all tests and calibration for all equipment/devices furnished under these specifications are satisfactorily completed under the supervision of the authorized Quality assurance personnel of the Contractor. IV: Electrical Works:190 . Availability guarantee test shall be conducted to assure this level of availability. Loss of each function shall have one weighing factor and unavailability of each equipment. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. shall have another weighing factor. that the loss of a function for not more than five percent of the points shall not be considered loss of availability.1% of 180 days. except however. during availability test run.03 12. a new 180 days test run shall start at the time when the system becomes available again.00 Availability Tests a) The Contractor shall guarantee 99. The guaranteed accuracy and repeatability and system parametric requirements specified in clauses on system parametric requirements shall be maintained for the entire 180 days run without any manual re-calibration or any other changes made to the SAS.04. 12.03. Loss of availability (unavailable system) shall be defined as the loss of the systems guaranteed accuracy and repeatability or of any system function. No. 03/2013-14 Vol. 05. 1kV rms for 1 minute across open contacts of changeover 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. c) The availability test shall be expressed as percentage.00 Type Test requirements of IED /Numerical relay / Energy Meters / DR/ Event Logger etc 12. Insulation Tests: Sl. 12. No. No Description IEC 60255-5 Standard 2kV rms for 1 minute between all case terminals connected together and the case earth. Withstand Tests 2kV rms for 1 minute between all terminals of independent circuits with terminals on each independent circuit connected together. which shall be calculated as (100% x (test duration time – Accumulated test outage time/Test duration time). CE/C/P&E/EE/E/OT. d) System outage time will be accumulated over test duration and calculated as outage time x weighing factor. 03/2013-14 Vol. IV: Electrical Works:191 . A.90-1989 1kV rms for 1 minute across the open contacts of the watchdog relays. covered in this chapter shall be submitted for owner’s approval inline with the requirements specified above. No.01 Type test report for the following tests for all the numerical relays /DR/energy meter etc. ANSI/IEEE C37. The contractor shall submit a list of weighing factors for all system components along with the bid and the same will be mutually finalized before contract award. A minimum of one hour’s down time shall be charged for each loss of availability in determining system availability.05. Dielectric 1.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation b) Downtime shall start upon loss of a system function and shall end upon full restoration of the affected system function. Outage time shall be weighted by each function’s weighing factor. 1. 2. Surge Withstand Capability 4kV fast transient and 2. 0. AC voltage dips and short 3. 1.5kHz applied directly to auxiliary supply 4kV. ELECTRICAL ENVIORNMENTAL TESTS IEC 60255-11 DC Supply Interruption The unit will withstand a 20ms interruption in the auxiliary supply. class IV 5. IV: Electrical Works:192 .90. 03/2013-14 Vol. IEC 60255-11 The unit will withstand a 12% ac ripple on the dc supply. IEC 60255–22–1. Fast Transient Disturbance 4kV.5kHz applied to all inputs.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation output relays. 1.2/50 µsec. class III IEC 60255-5 5 kV peak. AC Ripple on DC supply 2. High Frequency Disturbance At 1MHz. IEEE/ANSI C37.5kV rms for 1 minute across open contacts of normally open output relays. 3 positive and 3 negative shots at intervals of 5 sec B. CE/C/P&E/EE/E/OT.5kV oscillatory applied directly across each output contact. for 2s with 200 ohms source impedance: 2. in its quiescent state. 400 shots/sec. Without de-energizing.1 (1989) 6.5 kV peak. 2. Interruptions IEC 61000-4-11 20ms interruptions/dips. No. No. optically isolated input and power supply circuit. 1 MHz.5 J. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. duration 2 sec between independent circuits and independent circuits and case earth. 1. class III 4. Impulse Test. T = 15 µsec. IEC 60255-22-4. High Voltage 2.0kV peak across terminals of the same circuit. 80% AM. 27 MHz to 500 MHz Radio-Frequency 2. Description Radio-Frequency Standard IEC 60255–22–2. Electromagnetic Field. IEC 60255-22-2 Class 3 8kV discharge in air to all communication ports. Field strength of 35V/m. 1 kHz ENV 50140/ENV 50204 Radio-Frequency 3. 7. IEC 60255-22-2 Class 4 15kV discharge in air to user interface. Pulse Modulated Disturbances Induced by Radio Frequency fields. duty cycle 50 % ENV 50141. CE/C/P&E/EE/E/OT. ELECTROMAGNETIC COMPATIBILITY TESTS Sl. display and Electrostatic Discharge exposed metal work. IEC 61000-4-5: 1995 Level 4 4kV peak.2/50ms between terminals of each group. 80 MHz to 1000 MHz. 03/2013-14 Vol. class III 10 V/m. 8.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation Radiated Immunity C37. 900 MHz. No. 1. zero and 100% square wave modulated. No.90. class III 1. Electromagnetic Field. 6kV point contact discharge to any part of the front of the product. Surge Immunity earth.2: 1995 25MHz to 1000MHz.2/50ms between all groups and case 9. 1. Electromagnetic Field. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. 10 V/m. class III 4. IV: Electrical Works:193 . Non-Modulated 10 V/m. Amplitude Modulated ENV 50140. C. repetition frequency 200 Hz. 2kV peak. No. Vibration (during Operation and Transportation) IEC 255-21-1. ATMOSPHERIC ENVIORNMENTAL TESTS Sl. No. Humidity IEC 60068-2-3 0 56 days at 93% RH and +40 C E. 50 Hz EN 61000-6-4:2001 D.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation Amplitude Modulated Power Frequency Magnetic Field Interference Voltage. IEC 68-2-6 Response Class 2 Endurance Class 2 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. 50 Hz EN 61000-4-8. No. No. class IV 5. No. Description Standard 1. CE/C/P&E/EE/E/OT. 6. Voltage 150 kHz to 30 MHz 7. 30 A/m continuous. Aux. 300 A/m for 3 sec. Temperature Storage and transit –25 C to +70 C 0 0 0 IEC 60068-2-1 for Cold IEC 60068-2-2 for Dry heat 2. MECHANICAL STRESS TESTS Sl. 300 A/m for 3 sec. Description IEC 60255-6 0 Standard Operating –25 C to +55 C 1. Interference Field Strength EN 61000-6-4:2001 30 MHz to 1000 MHz 30 A/m continuous. IV: Electrical Works:194 . 03/2013-14 Vol. 01.01 The Contractor shall include in his scope: (a) Start-up / commissioning spares as necessary. 13.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation IEC 255-21-2. test reports for dynamic tests clearly indicating the operating time under different system / fault conditions shall be submitted. well before the start up and commissioning of the plant. class 1. 03/2013-14 Vol. No. 13. IV: Electrical Works:195 . No. CE/C/P&E/EE/E/OT. FUNCTIONAL TESTS All the numerical relays shall be tested for the functions specified in technical specifications.00 SPARES. (b) Mandatory Spares (c) Recommended Spares Contractor shall also state for each item of spares both mandatory and recommended.00. In case of Numerical Distance Relays.01. Operation) IEC 60255-21-3 Class 2 4. TOOLS & TACKLES 13. Shock (during Operation and Transportation) Shock response Class 2 Shock withstand Class 1 Bump Class 1 Seismic Vibration (during 3.01.02 The spares shall be delivered at the site well in time as per the schedule agreed during the award of contract. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. Continuous Shock (during Transportation) IEC 255-21-2. the normal expected service life. IEC 68-2-27 F. class 1.00 Spares 13. IEC 68-2-27 2. 01. 13. 03/2013-14 Vol. CE/C/P&E/EE/E/OT. if indicated elsewhere in the Specification and Contractor shall include the unit price and total price for all these spares.03. No.01. 13.03. containers or other packages is liable to be opened for examination as may be considered necessary by the Purchaser.00 Mandatory Spares 13. 13.01. The spares shall be treated and packed for long storage under the climatic conditions prevailing at site. 13.03.03.03 13.04 In addition to the spares mentioned above.03.02 The Prices for mandatory spares must be given separately and shall be used for Bid Evaluation. IV: Electrical Works:196 .05 In all cases. No. The Purchaser reserves the right to 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec.02.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation All spares supplied under this contract shall be strictly interchangeable with the parts for which they are intended to replace. It is the responsibility of the Contractor to supply all necessary spares as required until the equipment / systems are handed over to the Purchaser. Contractor shall also furnish in the Schedule of Recommended Spares a detailed list of recommended spare parts for three (3) years normal operation with unit prices. Contractor shall furnish the list of Start up and Commissioning Spares to be brought by them to ensure smooth commissioning of the plant.00 Start Up & Commissioning Spares Start up spares (also termed as ‘commissioning spares’) are those spares which will be required during the start up and commissioning of the equipment / systems and until performance testing. 13. which are considered essential by the Purchaser.04 Each spare part shall be clearly marked or labelled on outside of the packing with the description as indicated elsewhere in the specification.01 The list of mandatory spares. An adequate stock of start up spares shall be made available at the site such that the start up and commissioning of the equipment / systems.03 Recommended Spares 13. 13. performance testing and handing over the equipment / systems to the Purchaser can be carried out without hindrance and delays. CE/C/P&E/EE/E/OT.01. This list shall also take into consideration the mandatory spares indicated elsewhere in the specification. shall approach directly the individual equipment manufacturers / suppliers for procuring recommended spare parts. maintenance and overhauling of the equipment shall be supplied. 15. commissioning and putting into satisfactory operation. The Purchaser shall not necessarily procure these spare parts through the Contractor. The prices of any recommended spares.00. if required. IV: Electrical Works:197 .00 Special Tools & Tackles A set of special tools and tackle which are necessary or convenient for erection. The tools shall be shipped in separate containers. 14. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. shall be subject to review by the Purchaser and shall be finalised after mutual discussion. No.03. No. 13. which are not common with mandatory spares. Technical leaflets and catalogues of equipment supplied.05 A detailed list of recommended spares shall also be furnished by the Contractor for ten years of operation and maintenance of the plant.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation buy any of the recommended spare parts as considered necessary by them . c) d) e) Type Test Reports.00.00 Contractor shall also note that the Purchaser. clearly marked with the name of the equipment for which they are intended. 03/2013-14 Vol.00 DATA / INFORMATION TO BE SUBMITTED BY THE CONTRACTOR ALONG WITH THE BID Contractor shall furnish the following drawings & documents along with bid: a) b) Data Sheets Dimensional general arrangement drawings showing the equipment position and identification including control block. 14. Experience list for similar rating equipment. No. Shop inspection and testing procedures along with QAP. 2x660 MW Ennore SEZ Supercritical Thermal Power Project at Ash Dyke of NCTPS Spec. Development of earthing system. o. Relay setting calculations along with programming charts. Development of General arrangement drawings. h. p. Development cable trench layout and sections & release of construction drawings. e. b. IV: Electrical Works:198 . selection of protection. Complete erection. l. Lighting system design.DESEIN Tender Specification Volume-IV: Electrical Works 400 kV Substation DRAWINGS AND DOCUMENTS TO BE SUBMTTED AFTER AWARD OF CONTRACT 16. c.00. m. f. Insulation coordination and lightning protection design calculations. Development of Single line drawings with parameters of equipment and details of protection. Development of erection key diagrams with bill of material. control and annunciation schemes. Lux level calculations and conduit wiring diagrams. 03/2013-14 Vol. Development of power & control cable laying and termination schedules. Development of interlocking schemes. k. d. corona extinction voltage for conductor and height of bus/equipment height selection. g.00 a. Calculations for electric & magnetic field strength. j. All drawings related to 400 kV GIS substation package. Development of protection & control philosophy. The field testing equipment required for site testing shall be arranged by the contractor. CE/C/P&E/EE/E/OT. testing commissioning of all the equipment required for complete 400 kV GIS substation package. Development of detailed layout (Plan & section / elevation) drawings. n. No. i.