Manual Mantenimiento Celdas 8BK20

sMedium-Voltage Switchgear Type 8BK20 Switchgear up to 24 kV with Withdrawable Circuit-Breakers Air-Insulated, Metal-Enclosed, Metal-Clad, Single/Double Busbar Maintenance Instructions Issue 2000-11 Order No.: 8BX 3220-3BA00 Revision 01 Figure 1 Switchpanels 8BK20 (example) Contents 1 1.1 1.2 1.2.1 1.2.2 1.3 1.4 Preventive maintenance ........................ 3 Inspection schedule ............................... 3 Cleaning .................................................... 4 Removing and fitting the air filter............ 4 Cleaning agents ........................................ 6 Lubrication ............................................... 7 Checking the voltage indication and the coupling section ........................ 8 2 2.1 2.2 2.3 3 3.1 3.2 Corrective maintenance ..................... 10 Releasing the door interlock ............... 10 Emergency operation of the withdrawable section .......................... 11 Replacing fuse links ............................. 12 Testing the switching devices with open door ...................................... 13 Circuit-breaker ...................................... 13 Vacuum switch ..................................... 14 4 4.1 4.2 4.3 Appendix .................................................16 Replacement of parts ............................16 Disposal ..................................................16 Illustrations ........................................16 Follow the operating instructions for the equipment installed and Catalog HA 25.21. assembly. DAR registr. WARNING as used in these instructions and the warning information on the products themselves means that death.Siemens AG Power Transmission and Distribution Group Medium-Voltage Division Switchgear Factory Frankfurt 1992 1995 Signal terms and definitions: DANGER as used in these instructions and in the warning information on the products themselves means that death. © Siemens AG 2000 2 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . All rights reserved.Model for quality assurance in design. production. such as l Training and instruction or authorization to switch on. number: 3473-02 CAUTION as used in these instructions and the warning information on the products themselves means that minor bodily injury or damage to property may occur if the corresponding precautionary measures are not taken. Alle Rechte vorbehalten. Certification of the quality management system by DQS (German Association for the Certification of Quality Management Systems) DQS registr. number: DAT-P-013/92-50 Introduction and application of a quality management system for the Medium-Voltage Division in accordance with DIN EN ISO 9001 and DIN EN ISO 14001 Quality systems .. development. operation and maintenance of the product and have the appropriate qualifications for their work. serious bodily injury or substantial damage to property may occur if the corresponding precautionary measures are not taken. switch off. Note as used in these instructions indicates important information on the product or the relevant part of the instructions to which particular attention must be paid. earth and identify circuits and equipment / systems in accordance with the relevant safety standards. number: DAT-P-013/92-00 and as PEHLA Testing Laboratory Frankfurt/M. Evaluation the technical testing station by DATech (German Accreditation Body for Technology) in accordance with DIN EN 45 001 and accreditation of the technical testing station for the testing areas High-Voltage Switching Devices and Switchgear by DATech as Testing Laboratory Switchgear Factory Frankfurt/M. serious bodily injury or substantial damage to property will occur if the corresponding precautionary measures are not taken. Siemens AG DAR (German Accreditation Council) registr. installation and servicing. l First-aid training. commissioning. Qualified personnel as used in these instructions or the warning information on the product itself means persons who are familiar with installation. l Training or instruction in accordance with the relevant safety standards in relation to care and use of appropriate safety equipment. Current transformer Figure 2 Ensuring that the bolts at the current transformer are tight 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 3 . 1 Preventive maintenance 1. and mechanical components may move quickly. voltage transformers. • Check the switchpanel functions and put the switchgear back into operation. • Irrespective of the regular maintenance. even remotely controlled. The successful and safe operation of this switchgear is dependent on proper transport. • Commercially available tools are adequate for maintenance. vacuum switch and earthing switch. check safe isolation from supply. dust deposits. Such personnel must become thoroughly familiar with all warnings contained in these instructions.Maintenance WARNING During operation of electrical equipment and switchgear certain parts are live and hazardous voltages are therefore present. • Check the operating point of the limit switches for the motor operating mechanisms of the withdrawable sections. • Maintenance and care are required at shorter intervals (at the user’s discretion) in dusty conditions or if the air is extremely humid and contaminated. secure it against reclosing. protective devices etc. commissioning and maintenance work. CAUTION Do not climb onto the panels! Annually (at the user’s discretion) • General visual inspection for damage. moisture and partial discharge noises. e. check safe isolation from supply. Non-observance of the safety instructions and warnings can result in severe personal injury or property damage. earth and shortcircuit the outgoing feeders (DIN VDE 0105). the cause of faults and short circuits must be determined immediately and any damaged parts must be replaced. check highvoltage connections (terminals).. installation and erection and also on diligent operation and maintenance. Ensure that the bolts are tight DANGER High voltage! Touching the live parts will be lethal or will result in serious bodily injury. DIN VDE 0101. WARNING Isolate the switchgear. • Check whether accessories are complete and in good condition (also central service truck).g. secure it against reclosing. • Perform commissioning in accordance with the installation instructions after maintenance. in accordance with the information contained in the respective operating instructions. • Grease make-proof earthing switches after 500 switching operations: Refer to Operating Instructions "Lubricants " 8BX 31503GA00. The busbar must also be earthed and short-circuited if it is planned to work in the busbar compartment. earth and shortcircuit the outgoing feeders (DIN VDE 0105). erection. meters. Setting-up and operation of this switchgear are conditional on observance of the following DIN VDE / IEC specifications: DIN VDE 0100 / IEC 60364. The busbar must also be earthed and short-circuited if it is planned to work in the busbar compartment. storage. • Perform test operations with the circuit-breaker. Every ten years (or at the user’s discretion) Maintain and care for the installed equipment.1 Inspection schedule (maintenance is recommended according to following intervals) Every five years WARNING Isolate the switchgear. DIN VDE 0105. Only qualified personnel should work on or in the vicinity of this equipment and switchgear. The equipment may be operated only by qualified personnel who are familiar with the instructions and who observe the warning information in particular. • Clean the switchpanels. circuit-breakers. It is advisable to call on the support of the competent Siemens Service Centres for planning. Ensure that the bolts at the current transformer are tight (Figure 2). accessible in the switch compartment) that support the air filter directly behind the rear wall of the low-voltage compartment (Figure 5). Fixing nut for air filter Rear wall of low-voltage compartment Door of low-voltage compartment Figure 5 Air filter in the panel cooled by free convection 4 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . • Turn the detached longitudinal side down and remove the filter.1 Removing and fitting the air filter Air filter in the lower part of the highvoltage door (Figure 3) • Undo the fixing bolts of the tension frame • Remove the tension frame • Clean the filter • Refit in reverse order. • Turn the longitudinal side with the three holes to the top and bolt it tight. 7) • Remove the withdrawable section. • Place the longitudinal side without holes on the roof above the vertical partition wall. Figure 5. Panels with open-circuit ventilation Removal • Undo the three nuts (6. hold the air filter when undoing the last nut. Installation • Align the air filter in the switch compartment so that the longitudinal side with the three holes is inclined and points at the low-voltage compartment.1. 6.2. Figure 3 Air filter in the lower part of the high-voltage door (front view) Undo 4 fixing bolts Grip for pulling out Figure 4 Air filter in the bottom duct Roof plate Air filter Partition wall between busbar and switch compartment.2 Cleaning Fixing bolts Air filter Tension frame 1. Air filter in bottom duct (Figure 4) Air filter on the roof (Figures 5. Installation • Align the filter − by the holes for the fixing bolts and − according to the mounting position: plate with holes for fixing bolts horizontally.Panels with open-circuit ventilation Removal • Undo six fixing bolts (Figure 6) and pull the air filter out downwards. Fixing bolts of air filter Thermostat Fan module Air filter Figure 6 Fan unit in the switch compartment of the panel with forced ventilation (view from the floor to the top) Pressure relief flap of busbar compartment Fan module Figure 7 Roof of a panel with forced ventilation 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 5 . • Insert the air filter from the bottom to the top and bolt tight. frame with wire-cloth slightly inclined to the right side-wall. Maintain the motor of the fan unit as described in the associated instructions "Ventilator/Fans"! • Insert the withdrawable section and move it to the connected position. 6 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 .2.g. (e. always follow the instructions on the cleaning agents! ARAL 4005 or HAKU 1025/90 (contains hydrocarbons). vacuum cleaner.2 Cleaning agents WARNING To protect employees and the environment. HAKU 5067 (contains alcohol) or water with household detergent is a suitable cleaning agent for epoxy resin parts. epoxy resin).1. brushes. cleaning rags. WARNING Fire hazard! No smoking! Observe product descriptions and safety instructions! CAUTION Cleaning agents containing hydrocarbons must not be used for electrically stressed insulation parts. Grease the central service truck spindle.3 Lubrication Grease immediately after cleaning according to Operating Instructions "Lubricants " 8BX 3150-3GA00.1. 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 7 . Procedure: • Plug EURO-Test LRM in mains socket (or socket for EURO-plug) 230 V AC 50 Hz. . The EURO-Test LRM reproduces the minimum pick-up waves 2 µA and 5 V required by the standard.1.4 Checking the voltage indicator and the coupling section Use only voltage indicators in accordance with E DIN VDE 0682. • Indication: DSA-LRM flashes with a frequency of approx. Voltage indicator (LRM system) The EURO-Test LRM (Pfisterer make) enables the function test of the LRM voltage indicator for capacitively decoupled voltages in accordance with VDE 0682 Part 415E/IEC 1243-5 on a mains socket 230 V AC 50 Hz. Function test of the coupling section in accordance with the maintenance instructions. Teil 415/ IEC 1243-5. • Plug in voltage indicator DSA-LRM. L2. V Indicator does not flash or light up: Feeder or busbar is not live. 1 Hz. Reference to the year of the last repeat test Cover (must be replaced after checking so as not to contaminate the sockets) Test socket symbol Test sockets for busbars Voltage indicator plugged in L1 Test sockets on the switchgear front Figure 8 Voltage indicator 8 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . L3) of the feeder or busbar concerned: V Indicator flashes or lights up: Feeder or busbar is live. Voltage indicator plugged in capacitive test sockets (L1. • In case of deviations. must be arranged with repeat test. − Test voltage: 90V The test is passed if the measured insulation resistance is > 20 MΩ. Figure 8.2 µA. Figure 8.Coupling section The function must be repeatedly tested and certified during inspections. coaxial cable connection). The following tests are performed on the complete coupling section knowing the momentary phase-toearth voltage . − Note: These tests can be performed during switchgear operation as a function test! Voltage measurements at the test socket are not suitable for these checks! − On electronic measuring instruments. the repair.in all three phases: • Measuring the insulation resistance on the complete coupling section (incl. Figure 9. latest after 6 years. − Measuring point: Test sockets on the switchgear front. − The test is passed if the measured current is >= 3. and the current must be measured (fígure10). make: Siemens Figure 9 Measuring the insulation resistance at the test socket Recommended: Multimeter MA 4E. make: METRAWATT GmbH with LRM interface test adapter (1600 pF) make: PFISTERER Figure 10 Measuring the current at the test socket 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 9 . • The measured insulation resistance and current values described have to be documented in the report and confirmed by signature. − Measuring point: Test sockets on the switchgear front. • The user of the switchgear is responsible for: − Performance of the supervision − Documentation of the supervision − Repairing of defective / faulty permanent voltage indication systems − Storage of documentation. • The phase of the measuring point carrying the measuring voltage must be earthed through a resistance and an ammeter with a total impedance of: 2 MΩ + 3% or 1600 pF. observe the position of the earth side of the measuring instrument! Recommended: Insulation meter type ISOWID B 4101. if applicable the replacement of parts. 10 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . Procedure: Perform steps 1 to 4 as shown in Figure 11.clockwise by 90°.2 Corrective maintenance 2. s d Insert the double-bit key in the lock and turn it counter. Lift the door knob to the stop and open the door. a Insert the hexagonal socket key (DIN 911-4) in the opening and turn it clockwise until the set screw falls out on the inside. Close the eathing switch if necessary.1 Releasing the door interlock in case of emergency WARNING The interlock of the door of the high-voltage compartment should only be released if the withdrawable section cannot be racked to the disconnected position after a fault and the damage cannot be rectified in any other way. Safety measures: Isolate the switchgear in accordance with DIN VDE 0105. f Figure 11 Releasing the door interlock in case of emergency Firmly tighten the set screw again after repair. slide the the core of the electromagnet d Manually into the coil (in the housing). refit the set screw (Figure 11. • Release the interlock of the door of the switch compartment as described in section 2. Disconnect control voltages.2.door interlock with a screwdriver and turn the doublebit key by 90° counterclockwise. hold it and simultaneously press down the Section A-B Core of the electromagnet latch for the withdrawable section . earth and short-circuit it.door interlock CAUTION Each time when turning the double-bit key with the HV door open. no. the electromagnet is fitted on the withdrawable section on the left side in the traverse mechanism (Figure 12).1 for emergencies. • Mounting location: When viewing from the front. • After completion of the emergency operation. isolate the switchgear. Interlock lever Housing with the coil of the electromagnet 90° the hand crank onto the f Push hexagon. A Latch for the withdawable section . Procedure: • Switching device OFF. B s Remove the lower cover. Figure 12 Releasing the electromagnetic interlock of the withdrawable section 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 11 . press down the latch for the withdrawable section door interlock using a screwdriver. g Turn the double-bit key counter-clockwise by 90° and remove it. check safe isolation from supply (DIN VDE 0105). Emergency: Releasing the electromagnetic interlock The withdrawable section must be moved from the connected to the disconnected position even though the auxiliary voltage for releasing the electromagnetic interlock is not available. 4) of the door interlock on the door. secure it against reclosing. WARNING Safety measures: Before starting to work. • Perform steps 1 to 5 as shown in Figure 12.2 Emergency operation of the withdrawable section a Insert the double-bit key in the lock. and open the door. turn it counterclockwise as far as it will go and remove it. Emergency: Motor operating mechanism in intermediate position The withdrawable section must be racked out of a position between the connected and the disconnected position. . • Move the withdrawable section onto the central service truck as described in the Operating Instructions. Figure 13 Emergency operation of the motor operating mechanism in intermediate position 2. Section 2.4. push down the horizontally arranged fuse links out of the holders and remove them to the side.3 Replacing fuse links CAUTION Suitable are fuse links with dimensions in accordance with DIN 43 625 and "medium" type striker pin in accordance with IEC 282-1. Clip Figure 14 Replacing fuse links (example: withdrawable section with vacuum switch) 12 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . • Remove the fuse links.1. . and simultaneously insert a second screwdriver through the opening to turn the toothed wascher until the withdrawable section reaches one of the two limitpositions . even though the auxiliary voltage for racking the withdrawable section by motor is not available (Figure 13) Insert a screwdriver through the opening of the carriage mechanism. • Select and align the new fuse links: The arrow must point at the tripping/signalling mechanism • Push the new fuse links into the holders and secure with the clips (Figure 14). CAUTION The fuse links may be hot! • Turn out one clip on each end (Figure 14). . release the latch . unlock the central service truck from the panel. . . • Turn it clockwise until the symbol "Spring charged" appears in the inspection window. If the control voltage fails. • If the power supply for the motor returns during charging. locally with pushbuttons.if necessary. Closing and opening • Locally using mechanical means. • Electrically from the control room and. in order to avoid injuries caused by the motor starting suddenly.1 Circuit-breaker Hand crank Hand crank coupling Charging the closing spring by hand CAUTION The circuit-breaker may be operated only with the original crank (Figure 15). • Remove the hand crank. − operate the pushbuttons "ON" and "OFF" directly on the withdrawable section (Figure 16). Opening for the hand crank to charge the closing spring "ON" pushbutton "OFF" pushbutton Closing spring not charged Closing spring charged 00123 Operating cycle counter 00123 Circuit-breaker OFF Circuit-breaker ON Figure 16 Control elements and indicators for circuit-breaker 3AH 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 13 . with pushbuttons. the circuitbreaker can always be switched off mechanically (see above). there is no danger to the operator as the hand crank turns counter-clockwise with no load. if necessary.3 Testing the switching devices with open door 3. Figure 15 Hand crank for circuit-breaker Procedure: • Insert the hand crank through the opening (Figure 16) directly onto the circuit-breaker operating mechanism. charge the closing spring by hand when the low-voltage plug connector is disconnected from the withdrawable section. 2 Vacuum switch Closing with pushbuttons: Operate "ON" pushbutton (Figure 17). • Insert the hand crank through the opening directly onto the switch operating mechanism. Opening: Operate "OFF" pushbutton (Figure 17). • Remove the hand crank. Fuse links "tripped" Vacuum switch OFF Figure 17 Control elements and indicators for vacuum switch 3CG Hand crank for closing Hand crank coupling Figure 18 Hand crank for vacuum switch 14 20001101 ∗ MAINTENANCE INSTRUCTIONS ∗ 8BX 3220-3BA00 . Closing with the hand crank: Opening for hand crank for closing Fuse links "ready for operation" "ON" pushbutton "OFF" pushbutton Vacuum switch ON CAUTION The vacuum switch may be operated only with the original crank (Figure 18) in order to avoid injuries caused by the motor starting suddenly.3. • Turn it clockwise until the symbol "Spring charged" appears in the inspection window. 8BX 3220-3BA00 ∗ MAINTENANCE INSTRUCTIONS ∗ 20001101 15 . ...3 Illustrations No... 9 11 Releasing the door interlock in case of emergency ....... 4 6 Fan unit in the switch compartment of the panel with forced ventilation . or if anything in them is not clear..... 3 3 Air filter in the lower part of the high-voltage door .. nor to provide for every possible contingency to be met in connection with operation..... If the device is to be operated outside Germany.. 4 5 Air filter in the panel cooled by free convection . As supplied by Siemens............ the device contains no hazardous substances in the sense of the pertinent regulations in Germany........ 9 10 Measuring the current at the test socket .... PTFE....... the locally applicable laws and regulations must be followed.................. in a more environmentally acceptable way as sorted scrap with a mixed-scrap residual portion..... casting resin.. Page 1 Switchpanel 8BK20 .... please contact your local Siemens Sales Office. ceramic material and lubricants.... 4 4 Air filter in the bottom duct ......4 Appendix 4....... Should you require further information.. copper..... 14 18 Hand crank for vacuum switch. Quinta da Princesa P............. a drawing.. The warranty contained in the contract between the parties is the sole warranty of Siemens......... The contents of this instruction manual shall not become part of or modify any prior or existing agreement........... 14 Note These instructions do not purport to cover all details or variations in equipment. 12 15 Hand crank for circuit-breaker ........1 Replacement of parts Required information when ordering spare parts for individual components and switchgear: • Type and serial number of switchgear (cf.... Electronic scrap must be disposed of in compliance with the applicable regulations.. n° 201.... aluminium.................2 Disposal The 8BK20 switchgear is an environment compatible product.... In disposal............ the matter should be referred to the local Siemens Sales Office... if it is dismantled as far as possible.– 2845 547 Corroios Subject to change .... 10 12 Releasing the electromagnetic interlock of the withdrawable section .. 12 14 Replacing fuse links .......... 1 2 Ensuring that the bolts at the current transformer are tight .. rubber materials..... Any statements contained herein do not create new warranties or modify the existing warranty... rating plate) • Precise designation of the device or component... 8 9 Measuring the insulation resistance at the test socket ........ 5 7 Roof of a panel with forced ventilation ....... 5 8 Voltage indicator ........ please contact Siemens AG at the address given below.... Suggestions and/or corrections If you have any suggestions for improving these operating instructions.... The switchgear can be disposed of in environment compatible manner in compliance with existing legislation........... or...... Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purposes.... 4.. 13 16 Control elements and indicators for circuit-breaker 3AH ........ fibre-reinforced plastics. 4..... This Sales Contract contains the entire obligations of Siemens... priority must be given to re-use of the materials.......... if applicable on the basis of the information and illustrations in the related instructions. Materials: Steel................ 25 de Abril............. The components of the switchgear can be recycled as mixed scrap.... sketch or circuit diagram.... 11 13 Emergency operation of the motor operating mechanism in intermediate position.. 13 17 Control elements and indicators for vacuum switch 3CG ........ commitment or relationship............... Department EV MS1 Siemens Aktiengesellschaft Power Transmission and Distribution Group Medium-Voltage Division Switchgear Factory Corroios Av..