circuit breaker instructions for use SF draw --- out circuit---breakers in F400 MV distribution circuit breaker Anglais at your service

Transcription

1 circuit breaker Anglais MV distribution circuit breaker at your service instructions for use SF draw --- out circuit---breakers in F400

2 foreword... 3 symbols and conventions... 3 as per iso contact the Schneider Electric service unit for diagnosis and advice 3 4 distribution rules... safety rules general description... 5 draw --- out circuit --- breakers... 5 front panel... operating mechanism plate handling instructions... 7 identification... 7 storage... unpacking and handling dimensions... 9 installation instructions fitting and extraction... plugging in and plugging out removing the front plate... electrical diagram n FO electrical diagram n FO operating instructions operating the moving part... presentation of the operating mechanism plate circuit---breaker manual charging operation... circuit--- breaker remote control operations circuit---breaker interlocking preventive maintenance foreword... summarising table preventive maintenance and cleaning instructions... checking arcing contact wear lubricating the spring guides operating mechanism unit... latching unit gear motor... SEPAM diagnosis corrective maintenance foreword summarising table... replacing the keylocking (optional) replacing the closing springs... replacing a release the different positions of the release positions in the operating mechanism single closing release... undervoltage release shunt release or overcurrent... shunt release or overcurrent (two coils) replacing the motor of the gear motor... replacing a microswitch (SE) replacing an end of charging contact... replacing an antipumping relay replacing an auxiliary contact unit... SF6 gas recovery problems, probable causes and their solutions EN revision : 01 1

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4 foreword symbols and conventions Caution: you will find all the symbols below throughout the document, indicating the hazard levels depending on the different types of situation. DANGER as per iso DANGER: failure to follow this instruction will result in death or serious injury. WARNING as per iso WARNING: failure to follow this instruction may result in death or serious injury. CAUTION as per iso CAUTION: failure to follow this instruction may result in injuries. This alert signal can also be used to indicate practices that could damage the SM6 unit. INFORMATION-ADVICE We draw your attention to this specific point EN revision : 01 3

5 contact the Schneider Electric service unit for diagnosis and advice Call your sales representative who willputyouincontactwith the closest SCHNEIDER ELECTRIC group service centre. You can log on to: electric.com distribution rules The aim of this publication is to enable the SF6 unit to be installed correctly. This document is not a commercial document. It is a strictly technical document drawn up by Schneider Electric. safety rules CAUTION WARNING All the operations described below must be performed in compliance with applicable safety standards, under the responsibility of a competent authority. Thecontractormustbecertified and authorised to manipulate and perform work on the SF6 unit. CAUTION Only undertake the work after having read and understood all the explanations given in this document. If you have any difficulty complying with these rules, please contact Schneider Electric EN revision : 01

6 general description draw --- out circuit---breakers SF1 standard IEC 1250 A SF2 standard IEC 1250 A SF2 standard IEC 2500 A 3000A EN revision : 01 5

7 front panel A :poles B : operating mechanism plate C : circuit--- breaker frame D :frontplate E : mechanical opening pushbutton F :movingpart position selector G :movingpart operating crank handle insertion orifice H :movingpart position mechanical indicator J :LVsocket B J A A A D C F E G H operating mechanism plate 1 : technical data plate 2 : undervoltage release (optional) 3 : circuit--- breaker opening and closing pushbutton 4 : circuit--- breaker position moving marker 5 : operating mechanism position moving marker 6 :operatinglever 7 :operatinglever insertion opening 8 : ey --- locking (optional) EN revision : 01

8 handling instructions identification Ensure that: H the technical data marked on the information plates matches the data specified on the order form. H the wiring diagram is attached to the device manual. location of the information plate IEC standard A : information plate on circuit---breaker type and performance B : serial number (on the back of the device) B A contactor and auxiliaries rating plates 1 :devicetypedesignation 2 :ratedvoltage 3 :ratedlightningimpulse withstand voltage 4 : rated continous operating current 5 : rated breaking capacity for CC 3s 6 : no---load breaking capacity 7 : rated operating sequence 8 :class 9 :SF6mass 10 : reference standard 11 : characteristics information plates 1) 2) 3) 4) 5) 6) 7) 8) 9) 10) 11) option labels (stuck onto the operating mechanism plate) A : red label: indicates the undervoltage trip device option B : label indicating the key--- locking option. A B EN revision : 01 7

9 storage The devices are dispatched in the open position with their operating mechanism deactivated. Store the devices in their original packing. 70 o C o C prolonged storage Should the device exceptionally be delivered separately from a F400andstoredforaprolonged period of time, the device must remain in its original packing. Following prolonged storage, all the insulating parts must be thoroughly cleaned prior to use. The enclosure must be dusted using a clean, dry cloth. unpacking and handling Should the device exceptionally be delivered separately from a F400. H unpack the equipment on the installation site. H avoid impacts. Once the device has been unpacked, it will be handled by lifting or rolling. handling by lifting Use the lifting lugs to sling up the device. After handling. Remove the two lifting lugs and the screws and bolts. Remark: the lugs, screws and boltsmustbekeptinviewof further handling. handling by rolling Thedeviceishandledvia its front panel. CAUTION never pull or push the device by the poles (the poles are pressurised) EN revision : 01

10 dimensions SF1 standard IEC 1250 A standard ANSI 1200 A A C B SF2 standard IEC 1250 A standard ANSI 1200 A A C B SF2 standard IEC 2500 to 3000A standard ANSI 2000 to 3000A A C B draw-- out circuit-- breaker phase-- dimensions weight to--phase A B C Kg SF A / 1200 A SF A / 1200 A SF A / 1200 A SF2 2500A 2000A SF A 3000 A EN revision : 01 9

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12 installation instructions fitting and extraction To fit or extract a draw---out SF from a F400 functional unit,......refer to the functional unit user manual. plugging in and plugging out To plug in or out a draw---out SF in a F400 functional unit, refer to the functional unit user manual. removing the front plate Remove the 7 screws fixing the front plate. Remove the front plate. The panels are reassembled in opposite order to disassembly EN revision : 01 11

13 electrical diagram n FO EN revision : 01

14 A : SF6 pressure signalisation/common source of power supply f orendofchargingsignalisationandopenedorclosedcbsignalisation/common point for release interlock and anti--- pumping relay B : common point for: end of charging signalisation/sf6 pressure signalisation opened or closed CB signalisation supervision of continuity release circuit C : common point for end of charging signalisation /SF6 pressure signalisation signalisation opened or closed CB signalisation D : common point for end of charging signalisation /SF6 pressure signalisation / supervision of continuity release circuit E F : common point for end of charging signalisation / SF6 pressure signalisation : end of charging signal continued surveillance / supervision of continuity release circuit: common point for SF6pressure signalisation signalisation opened or closed CB signalisation G : end of charging signalisation / common point for SF6 pressure signalandopenedorclosedcbsignalisation H : SF6 pressure signalisation / common point for end of charging signalisation and opened or closed CB signalisation supervision of continuity release circuit J : SF6 pressure signalisation / common point for end of charging signalisation and opened or closed CB signalisation thebridgesareonlypossibleonthecircuitbreaker* with low voltage connectors type of connection (1 th letter of diagram) A B C D E F G H J bridge between terminals / / / 87 H bridge standard 73 / / QF25 69 / 71 A bridge only to be used in retrofiit cases 74 / / / / EN revision : 01 13

15 electrical diagram n FO EN revision : 01

16 A : SF6 pressure signalisation/common source of power supply for end of charging signalisation and opened or closed CB signalisation / common point for release interlock and anti---pumping relay SF6pressure signal B : common point for end of charging signalisation/sf6 pressure signalisation opened or closed CB signalisation supervision of continuity release circuit SF6pressure signal C : common point for end of charging signalisation /SF6 pressure signalisation signalisation opened or closed CB signalisation SF6 pressure signal D : common point for end of charging signalisation /SF6 pressure signalisation / supervision of continuity release circuit SF6 pressure signal E F : common point for end of charging signalisation / SF6 pressure signalisation / SF6 pressure signalisation : end of charging signal continued surveillance / supervision of continuity release circuit: common point for SF6 pressure signalisation and opened or closed CB signalisation common point for SF6 pressure signalisation and opened or closed CB signalisation G : end of charging signalisation / common point for SF6 pressure signal and opened or closed CB signalisation H : SF6 pressure signalisation / common point for end of charging signalisation and opened or closed CB signalisation supervision of continuity release circuit / SF6 pressure signalisation J : SF6 pressure signalisation / common point for end of charging signalisation and opened or closed CB signalisation / SF6 pressure signalisation thebridgesareonlypossibleonthecircuitbreaker with low voltage connectors type of connection (1 th letter of diagram) A B C D E F G H J bridge between terminals / / / 87 H bridge standard A bridge only to be used in retrofiit cases 73 / / QF25 69 / / / / / EN revision : 01 15

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18 operating instructions operating the moving part To insert or extract the moving part and open or close the door, refer to section operating instructions user manual. presentation of the operating mechanism plate A : operating mechanism charging lever B : operating mechanism charging lever housing C : closing push button D : opening push button E : operation counter F : circuit--- breaker position moving marker: 1 : apparent marker (O) circuit---breaker open 2 : apparent marker (I) circuit --- breaker closed G : operating mechanism position moving marker H : operating mechanism position marker 1 : marker (spring compressed) operating mechanism activated 2 : marker (spring slack) operating mechanism deactivated I F 1 2 H E 1 2 G B J C D A J : circuit---breaker keylocking in the Open position (optional) circuit---breaker manual charging operation charging the operating mechanism This is performed with lever A inserted in its housing B. To operate the circuit---breaker, the operating mechanism must first be charged. The energy stored in the springs then allows the circuit---breaker to be closed and opened. A new cycle is performed by recharging the operating mechanism. circuit-- breaker marker operating mechanism marker initial position --- Circuit --- breaker open --- Operating mechanism deactivated. Charge the operating mechanism by moving up and down until it clicks in place EN revision : 01 17

19 circuit-- breaker marker operating mechanism marker The circuit--- breaker position marker remains on O (device open). The operating mechanism marker indicatesthatitischarged. closing Remark: closing is impossible if there is at least one interlock preventing closing. CAUTION if the circuit--- breaker is equipped with an undervoltage release (optional), the latter must be energised in order to close the circuit-- breaker (except for downstream power supply). F H 2 Press the push button I to close the circuit--- breaker.the position indicator F of the circuit---breaker moves to I (device closed).the marker of operating mechanism H2 indicatesthatitisdeactivated. opening F H 2 Press the push button O to open the circuit--- breaker.the position indicator F of the circuit---breaker moves to O (device open). The marker of operating mechanism H2 indicatesthatitis deactivated EN revision : 01

20 circuit---breaker remote control operations Electrical charging of the operating mechanism A gear motor assembly automatically recharges the operating mechanism after circuit---breaker closing. Opening and closing The opening and closing releases are remote controlled. circuit --- breaker interlocking (optional) Remark: when the device is equipped with the optional circuit--- breaker interlocking in the open position, circuit---breaker closing is disabled. The circuit---breaker is keylocked in the open position. To lock: H keep the O opening push button depressed H turn and remove the key EN revision : 01 19

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22 preventive maintenance foreword safety instructions All the operations described below must be performed in accordance with applicable safety standards under the supervision of a competent authority. To reach the various devices: H open the circuit--- breaker H cut the power supply to the auxiliary circuits and the main circuit H close then open the circuit breaker using the push buttons in order to deactivate the operating mechanism H avoid impacts general rules Our equipment is designed to guarantee optimum operation provided that the servicing conditions described in this document are respected. Servicing requires removal of the protective panelling (front plate and operating mechanism plate). Removal and refitting of the front plate is described in the chapter Installation instructions. The operating mechanism plate is removed by withdrawing the 4 marked screws. cycle and servicing operations This device is designed to function for a period of 10 years or for 10,000 operations in normal operating conditions in accordance with the IEC 694 standard. Thefollowingarerecommended: --- an O/I operation at least once ayear --- a visual inspection at least once every 5 years to be determined with the Groupe Schneider service centres EN revision : 01 21

23 summarising table description maintenance supplies tools pole enclosure dust the enclosure plug --- in arms clean using a degreasing agent unchlorinated solvent degreasing agent degree of wear of the arcing contacts operating mechanism measuredegreeofwear spring guide clean using a degreasing agent unchlorinated solvent degreasing agent lubricate, oil 133 oils vacuoline oil Isoflex Topas L152 grease operating mechanism unit general cleaning cloth lubricate, oil 133 oils vacuoline oil Isoflex Topas L152 grease latching unit and linkages clean using a degreasing agent unchlorinated solvent degreasing agent lubricate, oil 133 oils vacuoline oil Isoflex Topas L152 grease cloth cloth lamp, bell cloth brush, oiler brush, oiler cloth brush, oiler gear motor lubricate Isoflex Topas L152 grease brush pole mechanism clean using a degreasing agent lubricate, oil 133 oils vacuoline oil Isoflex Topas L152 grease cloth brush, oiler preventive maintenance and cleaning instructions The pressurised SF6 gas insidethepoleretainsallits dielectric properties after breaking. Electrical durability is limited by contact wear. This wear depends on device use. We draw your attention to the risk of cleaning processes. consisting of spraying solvents at high pressure. The main drawbacks of such processes are. H damage due to jet pressure and impossibility of re---lubricating inaccessible fixing points. H risk of overheating due to solvent presence on contact areas. H elimination of special protections. CAUTION Never use solvents and alcohol. If the insulating parts are dusty, it is recommended that you remove the dust using a dry cloth EN revision : 01

24 checking arcing contact wear The wear check will be performed either on the front or rear of the circuit---breaker depending on the pole type. A : circuit-- breaker equipped with SF2 poles B : Disjoncteuréquipédepôles SF1 A B removing the closing springs CAUTION As the operating mechanism has 2 springs, mark them before removal for identification purposes. righthand springs Very slightly charge the operating mechanism using the operating lever. The springs are compressed EN revision : 01 23

25 B A C E D B As soon as possible insert a screw or pin A 6mmdiameterand 40 mm long into the hole shown above. Release the lever. The spring will then exert pressure on pin A insteadofonthetopand bottom pins B. (do not exceed the first notch on the operating mechanism, or perform a complete cycle and start again). To separate the guide from the springs:--- remove clips C and washer D. H separate the spring guide from ring E of the crank handle. CAUTION Do not scratch the teflonised ring. lefthand springs Continue charging the operating mechanism using the operating lever. The springs are compressed EN revision : 01

26 F G J H As soon as possible, insert a screw or pin F 6mmindiameter and 40 mm long in the hole shown above. Release the lever. The spring will then exert pressure on pin F. (do not exceed the first notch on the operating mechanism, or perform a complete cycle and start again). To separate the guide from the springs: H remove clips G and washer H.I H separate the spring guide from ring J of the crank handle. CAUTION Do not scratch the teflonised ring. checking Serial connect the three phases of thedeviceandinsertabelltype indicator in the circuit. Charge the operating mechanism until the end of charging click EN revision : 01 25

27 Keep pressing on the lever while pulling the righthand crank handle towards you until the ratchet wheel latches. Atthesametimepresstheclosing button and the charging lever in order to release the latching unit. Stop charging as soon as the lamp comes on: the arcing contacts of the three phases are in contact. CAUTION keep the lever in this position with the bell activated. If the position is exceeded, repeat the operation. Very slowly close the circuit---breaker using the lever. Red Green good arcing contacts Red Green good arcing contact Red Green worn arcing contacts Red Green worn arcing contact SF2 poles If the poles activate the bell when the finder is in the red area, all 3polesmust be replaced. SF1 poles If the poles activate the bell when the end of the link is in the red area, all 3polesmust be replaced EN revision : 01

28 fitting the right and lefthand closing springs CAUTION these springs can be fitted at the same time Disconnect the tester Slowly close the circuit---breaker until your hear the end of charging click. Press the push button. The device should open. Place the rings on the pins of the right and lefthand crank handles. CAUTION Do not lubricate before mounting. Do not scratch the teflonised ring. Place the right and lefthand spring guides on the pins, positioning them correclty in the pin groove. Place the righthand crank handle ring in the opening of the righthand spring guide using the charging lever. Continue charging by correctly positioning the spring guide in the lefthand crank handle ring groove EN revision : 01 27

29 C B 1 C 2 D A CAUTION Do not lubricate the teflonised ring A. Place washers D and clips C (to the right and left). Remove the screws or pins B. Finish charging. Checking Closethenopenusingthe I and O push buttons, in order to deactivate the operating mechanism. lubricating the spring guides closing spring Charge the operating mechanism by moving up and down until it clicks in place. The circuit---breaker position indicator remains O (device open). The operating mechanism indicator moves to the activated position. CAUTION Do not lubricate the teflonised ring A. WARNING The springs are compressed. H lubricate the guides H oil the phosphatised springs A A brush must be used to lubricate. Do not disassemble the spring to perform this operation EN revision : 01

30 opening spring local manual closing of the circuit-- breaker CAUTION if the circuit--- breaker is equipped with an undervoltage release (optional), the latter must be energised in order to close the circuit--- breaker. Press the push button in order to close the circuit---breaker. The circuit--- breaker position indicator moves to I (device closed). The operating mechanism indicator moves to the deactivated position. The springs are compressed. H lubricate the guides H oil the phosphatised springs WARNING A brush must be used to lubricate. Do not disassemble the spring to perform this operation. local manual opening of the circuit-- breaker operating mechanism unit Press the push button in order to open the circuit--- breaker. The circuit---breaker position indicator moves to O (device open). The operating mechanism indicator indicates that it is deactivated. Clean the entire subassembly Oil all the phosphatised parts Check presence of the Bauman hoops. Lubricate the pins and hinges. WARNING A brush must be used to lubricate. Do not disassemble the operating mechanism to perform this operation EN revision : 01 29

31 latching unit Clean the entire subassembly then oil the phosphatised parts Lubricate the latching units and pins. WARNING A brush must be used to lubricate. Do not disassemble the latching unit to perform this operation. gear motor Clean the entire subassembly Oil the phosphatised parts Lubricate the gears. WARNING A brush must be used to lubricate. Do not disassemble the gear motor to perform this operation. SEPAM diagnosis This function supplies the total number of breakings and the cumulated total of broken KA 2. The cumulated total of broken amps reflects the degree of wear of the breaking part. This information is used to manage arcing contact wear and to generate monitoring. Refer to the section on monitoring arcing contact wear. Maximum levels of broken amp cumulated totals: SF1, 2 cumulated (KA) EN revision : 01

32 corrective maintenance foreword Corrective maintenance operations are designed to replace faulty subassemblies. The operations listed in the summarising table below can be performed by the customer or by Groupe Schneider s After --- Sales representatives. Foranyothermaintenance operations, please contact your nearest Groupe Schneider service centre. After each operation perform the electrical tests in accordance with applicable standards. CAUTION When replacing parts, all the accessories listed below MUST be placed by the new equipment: -- Nylstop (self--locking nut) -- Contact washer -- Retaining rings -- Mechanical pin summarising table description performed by comments replacing poles =S= replacing the GMh operating mechanism =S= replacing keylocking =S= or Customer replacing the closing spring =S= or Customer replacing the releases single closing release =S= or Customer shunt release or single overcurrent trip device =S= or Customer undervoltage trip device without lifter =S= or Customer undervoltage trip device with lifter =S= shunt release or double overcurrent trip device =S= or Customer replacing the MITOP =S= replacing the motor of the gear motor =S= or Customer replacing the gear motor =S= every 10,000 operations replacing the microswitch (SE) =S= or Customer replacing the end of charging contact =S= or Customer replacing the antipumping relay =S= or Customer replacing the 5 or 9 auxiliary contact unit =S= or Customer replacing the operation counter =S= every 10,000 operations actions to perform in event of a pressure switch alarm =S= EN revision : 01 31

33 replacing the keylocking (optional) removing A Release the lock Remove screws A fitting A B NB: the lock is retrieved on site. The identifying label is stuck to the plate. Adjustment: Screws A not locked in place. Continue depressing the push button. Close the lock with the key extracted. Check a clearance B is present and lock screws A. replacing the closing springs CAUTION as the operating mechanism has 2 springs, you must mark them before removal for identification purposes. removal righthand springs Very slightly charge the operating mechanism using the operating lever. The springs are compressed EN revision : 01

34 A C E D As soon as possible, insert a screw or pin A 6 mm diameter and 40 mm longintheholeshownabove. Release the lever. The springs then exert pressure on pin A. (do not exceed the first notch on the operating mechanism, or perform a complete cycle and start again). To separate the guide from the springs: H remove clips C and washer D. H separate the spring guide from ring E of the crank handle. CAUTION Do not scratch the teflonised ring. lefthand springs Continue charging the operating mechanism using the operating lever. The springs are compressed EN revision : 01 33

35 F G J H As soon as possible, insert a screw or pin F 6mmindiameter and 40 mm long in the hole shown above. Release the lever. The springs then exert pressure on pin F. (do not exceed the first notch on the operating mechanism, or perform a complete cycle and start again). To separate the guide from the springs: H remove clips G and washer H. H separate the spring guide from ring J of the crank handle. CAUTION Do not scratch the teflonised ring. fitting the right and lefthand closing springs CAUTION these springs can be fitted atthesametime Disconnect the tester Slowly close the circuit--- breaker until the end of charging click. Press the push button. The device should open EN revision : 01

36 Place the rings on the pins of the right and lefthand crank handles. CAUTION Do not lubricate before mounting. Do not scratch the teflonised ring. Place the right and lefthand spring guides on the pins, positioning them correclty in the pin groove. Place the righthand crank handle ring in the opening of the righthand spring guideusingthecharginglever. Continue charging by correctly positioning the spring guide in the lefthand crank handle ring groove. B 1 C 2 D A CAUTION Do not lubricate the teflonised ring A. (do not exceed the first notch on the operating mechanism, or perform a complete cycle and start again). Place washers D and clips C (to the right and left). Remove the screws or pins B. Finish charging. checking Closethenopenusingthe I and O buttons, in order to deactivate the operating mechanism EN revision : 01 35

37 replacing a release the different positions of the release positions in the operating mechanism release undervoltage shunt release overcurrent top view of assembly position single closing - I Back Front undervoltage Back - II Front single opening - - Back Back III IV double opening - - Front Back Front V Front single closing release according to position I removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting and checking Proceed in reverse order from removal. Tightening torque: 13 Nm. Position the release with its cylindrical rod facing the latching unit. Check that the coil rod does not flange the unit crank handle in the tripped position. It should ensure that closing latch A moves to eccentric catch B. A B EN revision : 01

38 undervoltage release according to position II removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting and checking 0.5 to 1 mm 1mmmin. Position the release in the tripped position. Position the crank handle in the limit stop position. There should be a clearance of 0.5 to 1 mm between the crank handle and the release. Fit the two M6 fixing screws. Tightening torque: 13 Nm. Check that there is a clearance of at least 1mmbetween the non---operating crank handle and the release when the magnetic circuit is closed. shunt release or overcurrent according to position III or IV removal NB: the coil is mounted to the left or right of the operating mechanism according to the protection type. For lefthand mounting, insert four 0.5 mm washers between the operating mechanism frame and the coil. Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting and checking Proceed in reverse order from removal. Tightening torque: 13 Nm. Position the release with its cylindrical rod facing the latching unit. Check that the coil rod does not flange the unit crank handle in the tripped position. It should ensure that closing latch A moves to eccentric catch B. B A EN revision : 01 37

39 shunt release or overcurrent (two coils) according to position V removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting and checking Proceed in reverse order from removal. Tightening torque: 13 Nm. Position the release with its cylindrical rod facing the latching unit. Check that the coil rod does not flange the unit crank handle in the tripped position. It should ensure that closing latch A moves to eccentric catch B. B A replacing the motor of the gear motor removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the motor. fitting Proceed in reverse order from removal. Tightening torque: 13 Nm EN revision : 01

40 replacing a microswitch (SE) continuous tripping removal Remove the screws and the latching lug. Mark and disconnect the wires. Remove the two fixing nuts without removing the screws. Remove the microswitch without removing the insulating plate. fitting Proceed in reverse order from removal. Tightening torque: 0.7 Nm. replacing an end of charging contact removal NB: removal of the lefthand closing spring simplifies this operation. C B A Remove clip A and spacer B in order to withdraw pin C. A wrench can be passed through thewindowtoremovescrewe. do not disassemble The end of charging contacts are placed on the lefthand side surface of the operating mechanism. Mark and disconnect the wires. D E Remove the two screws in order to release contact holder D. Swivel the guide in order to bring nut E up in front of the window. Remove the fixing screw EN revision : 01 39

41 D D Swivel the contact. Slide holder assembly D and contacts upwards in order to release it from the guide and operating mechanism. Mount the new contact on the holder. CAUTION Remove the faulty contact. Only mount one screw on the righthand contact. Tightening torque: 2.8 Nm. fitting D E Slide the holder assembly D and contacts to the bottom of the guide. Swivel the guide in front of the window in order to fit the fixing screw and nut E. Tightening torque: 2.8 Nm EN revision : 01

42 C D B A Put back the contact holder D without tightening the bolts. Fit pin C, spacerb and clips A. 0,1 mm mini 0,5à1mm F checking Ensure that there is at least 0.1 mm between the pin and the guide, then lock the screws in place. Tightening torque: 6 Nm. Check that there is a clearance of 0.5 to 1 mm between the contact finger and part F. With the operating mechanism in the deactivated position, check that the contacts are not flanged. Connect the wires. replacing an antipumping relay removal D Mark and disconnect the wires. Relay A is fixed onto the auxiliary contacts by strap B. Remove fixing bolt C and retrieve it for fitting. Remove relay A and insulating plate D. A B C fitting Proceed in reverse order from removal. Tightening torque: 2 Nm EN revision : 01 41

43 replacing an auxiliary contact unit removal A 1 B 1 C A 2 E 2 D Auxiliary contact unit contacts contacts Mark and disconnect the wires. For a 5---contact unit: loosen bolts A and release crank handles B and C. For a 9---contact unit: loosen bolt D and release crank handle E. G 1 F Identify contact location using hole F in order to put the new unit back into the same position. Remove bolts G which must be retrieved for fitting. Remove the unit to be replaced 1 or 2. fitting Proceed in reverse order from removal. Bolt tightening torque: AandD:10Nm. G:2Nm EN revision : 01

44 SF6 gas recovery conformity rules The SF6 must be removed before any dismantling operation can be carried out in compliance with the procedures described in IEC and accordiing to the following instructions.the gas must be treated in compliance with IEC intervention method A Tool necessary for the operation Plug (A). Connect the vacuum/filling device. Wait until the pressure guage shows 0 (15 min to empty the tank) before removing the connection EN revision : 01 43

45 problems, probable causes and their solutions The information listed below ensures minimum operating downtimes. If the solutions proposed are not effective, you should contact your nearest Groupe Schneider service centre. symptoms faulty components probable causes and solutions Impossible to charge Electrical operating mechanism: motor Insufficient voltage at motor terminals: H restore voltage H replace motor if necessary End of charging contact H check contact state H replace it if necessary Wiring H check auxiliary circuit connections Circuit-- breaker will not close the indicator remains in the open position The circuit-- breaker closes and opens immediately, then remains open although the closing order is maintained. Undervoltage tripping Closing release Charging device All opening releases The coil is not supplied H supply the release or keep it artifically in the closed cirucit position (e.g. by using an elastic band). The release is incorrectly connected H check the circuit The winding is cut H replace the release The operating mechanism is not charged H charge the operating mechanism Fault on the main MV circuit or incorrect adjustment of the protection circuits H remove the fault H adjust the protection circuits The circuit-- breaker opens and closes in turn. Antipumping relay or direct releases H H replace the relay readjust The circuit-- breaker does not open manually or by remote control (circuit--- breaker without electricaloperating mechanism). Operating mechanism or circuit --- breaker Opening release Hard spot on operating mechanism or circuit--- breaker H finish charging the operating mechanism with the manual charging handle. Alert the Groupe Schneider service centre. The release is incorrectly connected H check the circuit The winding is cut H replace the release H check the protection circuit EN revision : 01

46 group Schneider Electric service centers are there for: engineering and technical assistance start-up training preventive and corrective maintenance adaptation work spare parts Call your sales representative who will put you in touch with your nearest group Schneider Electric service centers. Schneider Electric Industries SAS 89, boulevard Franklin Roosevelt F Rueil--- Malmaison (France) Tel:+33(0) electric.com EN revision : 01 As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication. Conception, rédaction: Service Documentation Technique T&D Edition du : 14/04/2008