circuit breakers instructions for use SF2 fixed MV distribution circuit breaker at your service Anglais

Transcription

1 circuit breakers nglais MV distribution circuit breaker at your service instructions for use SF2 fixed

2 foreword... 3 symbols and conventions... 3 as per iso contact the Schneider lectric service unit for diagnosis and advice 3 4 distribution rules... safety rules general description... 5 fixed circuit breaker with GMh operating mechanism... 5 handling and storage instructions... 9 identification... 9 SF2 dimensions... unpacking and handling handling... storage installation instructions phase identification installing an SF2 circuit breaker... connection to the earth bar upper MV electrical connections... lower MV electrical connections LV electrical connections... remounting the cover plates electrical diagram n electrical diagram n electrical diagram n electrical diagram n operating instructions operating mechanism front plate manual charging of the circuit breaker... remote operation circuit breaker locking 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 corrective maintenance foreword... summarising table replacing the keylocking (optional)... replacing the closing springs replacing a release... the different release positions in the operating mechanism according to position I... according to position II according to position III or IV... according to position V replacing the motor of the gear motor... replacing a microswitch (S) replacing an end of charging contact... replacing an antipumping relay replacing an auxiliary contact unit... SF6 gas recovery N revision : 01 1

3 problems, probable causes and their solutions N revision : 01

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. DNGR as per iso DNGR: failure to follow this instruction will result in death or serious injury. WRNING as per iso WRNING: failure to follow this instruction may result in death or serious injury. CUTION as per iso CUTION: 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. INFORMTION-DVIC We draw your attention to this specific point N revision : 01 3

5 contact the Schneider lectric service unit for diagnosis and advice Call your sales representative who willputyouincontactwith the closest SCHNIDR LCTRIC 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 lectric. safety rules CUTION WRNING ll 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. CUTION 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 lectric N revision : 01

6 general description fixed circuit breaker with GMh operating mechanism 1250 (IC) 1200 (NSI) Note : The moving chassis shown in the diagram for the 1250 SF2 may be mounted on all the circuit breakers presented in this manual : SF6 pole units : circuit--- breaker frame C : GMh operating mechanism D : operating mechanism front plate :operatinglever F :frontcover : pressure switch : moving chassis LV connections C J :topwiringexit K : bottom wiring exit MV connections L : upper pole terminals (1250 and 1200 NSI standard) M :lowerterminals(1250 ). N :deflector(200 kv, NSI standard) N revision : 01 5

7 2500 (40,5 kv) (IC) 2000 (NSI) 2500 and 3150 (IC) 3000 (NSI) J P P P P 2500 (40.5kV) (CI) 2500 (INSI) J P N F D K K J Q Q Q Q 2500 et 3150 (CI) 3000 (INSI) J Q F D K G K : SF6 pole units : circuit--- breaker frame C : GMh operating mechanism D : operating mechanism front plate :operatinglever F :frontcover G : pressure switch LV connections D J :topwiringexit K : bottom wiring exit MV connections N :deflector (200 kv, NSI standard) P : upper terminals (2000 ) lateral terminals (2000 ) Q : upper terminals (2500/3000/3150 ) lower terminals (2500/3000/3150 ) N revision : 01

8 2500 CHIN (IC) R R R T R J J V U C F K D G K : SF6 pole units : circuit--- breaker frame C : GMh operating mechanism D : operating mechanism front plate :operatinglever F :frontcover G : pressure switch LV connections J :topwiringexit K : bottom wiring exit MV connections F :superiorarmg H : upstream connection I :inferiorarm J : dowstream connection N revision : 01 7

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10 handling and storage instructions identification Check that : H the characteristics indicated on the plates correspond to those on the order form. H the connection diagram is included with the circuit breaker. identification plates : circuit --- breaker type and characteristics : operating---mechanism and auxiliary characteristics C : undervoltage--- release option D : keylocks option : earthing connection C F 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 Red label indicating the undervoltage trip device option. Label indicating the keylocking option N revision : 01 9

11 SF2 dimensions 1250 (IC) 1200 (NSI) Note : the optional moving chassis showninthediagram maybe mounted on all the circuit breakers presented in this manual. C D CHIN (40,5 kv) (IC) 300 C D 2500 (40,5 kv) (IC) 2000 (NSI) 300 C D 2500 and 3150 (IC) 3000 (NSI) C 300 D N revision : 01

12 SF2 fixed between phases dimensions without moving chassis dimensions with moving chassis weight in Kg IC standard C D SF2 Chassis CHIN , and NSI standard unpacking and handling Unpack the circuit breaker on the installation site. H avoid knocking and do not apply forces that could damage the unit when removing the sides of the packing. WRNING The pole units are under pressure. t the bottom of box H donotforgettoremovethe operating---mechanism lever. removing the bottom of the packing Theprocedureisthesameforall SF2 circuit breakers. Connect a sling or hooks to the lifting rings and take up slack without lifting the circuit breaker. H remove the four screws H lift the circuit breaker and remove Lower the circuit breaker to the floor. removing the transportation support fixed SF2 with moving chassis C D Take up slack without lifting the H remove screws C circuit breaker. H remove support D Lift and lower the circuit breaker to the floor N revision : 01 11

13 fixed SF2 without moving chassis C D Take up slack without lifting the circuit breaker. H remove screws C and the two stabilizing plates D H remove support D Lift and lower the circuit breaker whereitwillbeinstalled. handling lifting Lift the fixed circuit breaker (models with or without a moving chassis) using lifting rings. Following handling Remove the lifting rings and the screws note : Save the lifting rings and the screws in case the circuit breaker must be subsequently lifted. rolling Roll on a smooth, flat floor. Handle the circuit breaker from the front. Never push or pull on the pressurized pole units. WRNING Once the circuit breaker has been unpacked, it must be handled as follows : H by lifting for circuit breakers without a moving chassis (using the lifting rings ) H by lifting or rolling for SF2 circuit breakers with a moving chassis N revision : 01

14 storage Circuit breakers are shipped in the Open (OFF) position and with the operating mechanism discharged. Store the circuit breaker in its original packing, in a dry, well ventilated location, protected from rain, sprayed water and chemical agents. Cover the circuit breaker with a trap or a cover providing effective protection against dust, paint, etc. 70 C C extended storage Following extended storage, carefully clean all the insulating parts prior to start---up. Clean the outer surfaces with a clean, dry cloth N revision : 01 13

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16 installation instructions phase identification installing an SF2 circuit breaker C D Circuit breaker with the moving chassis Fix the moving chassis to rail anchored to the floor, using angle --- iron and bolts C. Use enough washers D to avoid deforming angle--- iron when tightening. Circuit breaker without the moving chassis Use cage --- nuts. connection to the earth bar The bar is located in the bottom right corner of the pole---support structure N revision : 01 15

17 upper MV electrical connections Pole connection Top view of pole and the connection insert. H tightening torque: 75 Nm (no more and no less) H two M12 tapped holes () H bolt insertion : --- minimum = 18 mm --- maximum = 28 mm SF (IC) 1200 (NSI) connection to terminals using copper bars Minimum recommended dimensions for bars C is : 2x63x5mm(not supplied). Use M12 bolts () to connect... C the bars and fish --- plates C to the terminal. C SF CHIN (IC) Raccordement sur plage en U par barres CU Minimum recommended dimensions for bars L is : 2x63x10mm(not supplied). F F D H four 12 holes in terminal extension D Use M10 bolts () D...to connect bars F to terminal extension D. SF (NSI) connection to terminal extension using copper bars Minimum recommended dimensions for bars C is : 2x63x10mm(not supplied). C H 30 G H two 14 mm holes in terminal extension G Use M12 bolts (H) H C G to connect bars C to terminal extension G N revision : 01

18 SF and (IC) (NSI) connection to a U terminal extension using copper bars Minimum recommended dimensions for bars L is : 2 x 100 x 8 mm (not supplied). L J K H eight 13 mm holes in terminali extension J Use M12 bolts (K)... K J to connect bars L to terminal extension J. L 3150and3000 connection to a U terminal extension using copper bars Minimum recommended dimensions for bars L is : 4 x 100 x 8 mm (not supplied). L J M H eight 13 mm holes in terminal extension J Use M12 bolts (M)... L M to connect bars L to terminal extension J. J L lower MV electrical connections note : deflector for NSI standard circuit breakers, rated 1200 and pole connection Top view of pole and the connection insert. H tightening torque: 75 Nm (no more and no less) H four M12 tapped holes () H bolt insertion : --- minimum = 18 mm. --- maximum = 28 mm. SF (IC) and 1200 (NSI) connection to right-- angle terminal extension using copper bars Minimum recommended dimensions for bars is : 2x63x5mm(not supplied) C H two 14.2 mm holes in terminal extension C Use M12 bolts (D)... D C...to connect bars to terminal extension C N revision : 01 17

19 SF CHIN (IC) connection to a U terminal extension using copper bars Minimum recommended dimensions for bars N is : 2x63x8(not supplied) H G G F H four 12 to terminal extension F holes in terminal extension Use M10 bolts (G) to connect bars H to terminal extension F. F SF NSI standard connection to a U terminal extension using copper bars Minimum recommended dimensions for bars is : 2x63x5mm(not supplied) K H two 14 mm holes in terminali extension J. K J 60 Use M12 bolts (K) to connect bars to terminal extension J. SF and and NSI standard connection to a U terminal extension using copper bars Minimum recommended dimensions for bars N is : 2 x 100 x 8 mm (not supplied). N L H eight 13 mm holes in terminal extension L L M Use M12 bolts (M) to connect bars N to terminal extension L. N and 3000 connection to a U terminal extension using copper bars Minimum recommended dimensions for bars N is : 4 x 100 x 8 mm (not supplied). N P Use M12 bolts (P) to connect... L H eight 13 to terminal extension LO P... bars N to terminal extension L N revision : 01

20 LV electrical connections removing the cover plates removing the front cover CUTION LV connections require removal of : H the front cover. H the operating mechanism front plate. The charging lever must be withdrawn before removing the front cover. Remove the eight screws M6 and contact washers (), then the front cover. removing the operating mechanism front plate. H To remove the front plate remove the four lock nuts M6 and contact washers (). To remove the front plate remove the four lock nuts M6 and contact washers (). remounting the cover plates Proceed in reverse order N revision : 01 19

21 circuit --- breaker LV wiring passages Wires exit via connector or for customer connections. The LV exit may be installed on the left side, at the top () orthe bottom () of the SF2 circuit breaker. The unused exit should be blocked with a blanking plate C. C N Q LV connections Connections must be made in compliance with the diagram supplied with the circuit breaker. N : 5 rotating auxiliary contactso P : 9 rotating auxiliary contacts Q : LV terminal block. P C N revision : 01

22 electrical diagram n N revision : 01 21

23 electrical diagram n N revision : 01

24 electrical diagram n N revision : 01 23

25 electrical diagram n N revision : 01

26 operating instructions operating mechanism front plate operating--- mechanism charging lever. charging---lever insertion point. C closing (ON) pushbutton. D opening (OFF) pushbutton. operations counter. F circuit--- breaker position indicator : 1 (O) indication means circuit breaker is open (OFF) 2 (I) indication means circuit breaker is closed (ON) G operating--- mechanism position indicator F 1 2 G C D H operating mechanism position symbols : 1 (spring compressed) operating mechanism charged 2 (spring not compressed) operating mechanism discharged.i H 1 2 J J keylocks to maintain the circuit breaker in the open (OFF) position (option). manual charging of the circuit breaker Lever must be inserted in slot. To operate the circuit breaker, the operating mechanism must be charged. The energy stored in the springs is sufficient for one closing and one opening operation. Prior to a new cycle, the operating mechanism must be recharged. operating---mechanism charging circuit --- breaker indication operating-- mechanism indication Position at beginning of cycle : --- circuit breaker open; --- operating mechanism discharged. Pump the charging lever back and forth until a click is heard.. circuit --- breaker indication operating-- mechanism indication The circuit--- breaker position indicator continues to show O, meaning that the circuit breaker is open (OFF). The operating --- mechanism position indicator shows that the mechanism is charged (spring compressed) N revision : 01 25

27 circuit---breaker closing Note Closing is impossible if a single closing--- lockout function is still activated. CUTION If the circuit breaker is equipped with an undervoltage release (option), the release......must be supplied with power in order to close the circuit breaker (unless powered from downstream). F2 H 2 Press the closing (ON) pushbutton I to close the circuit breaker. The circuit--- breaker position indicator F turns to I, indicating that the circuit breaker is closed. The operating --- mechanism position indicator H2 shows that the mechanism is discharged. circuit breaker opening F 1 H 2 Press the opening (OFF) pushbutton O to open the circuit breaker. The circuit--- breaker position indicator F turns to O, indicating that the device is open. The operating --- mechanism position indicator H2 shows that the mechanism is discharged. remote operation electrical charging of the operating mechanism gear motor assembly automatically recharges the mechanism following circuit breaker closure. opening and closing Operation of the opening and closing releases is remotely controlled N revision : 01

28 circuit breaker locking (option) Note When the circuit breaker is fitted with the locking option, it is possible to inhibit circuit---breaker closing. The circuit breaker may be locked in the open position. To lock the circuit breaker : H press and hold the opening (OFF) pushbutton O ; H turn and remove the key N revision : 01 27

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30 preventive maintenance foreword safety instructions ll 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 IC 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 N revision : 01 29

31 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. lectrical 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. CUTION Never use solvents and alcohol. If the insulating parts are dusty, it is recommended that you remove the dust using a dry cloth N revision : 01

32 checking arcing contact wear Remarque : procédure à effectuer commande sans ressort de fermeture. removing the closing springs CUTION s 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 N revision : 01 31

33 C D s soon as possible insert a screw or pin 6 mm diameter and 40 mm long into the hole shown above. Release the lever. The spring will then exert pressure on pin insteadofonthetopand bottom pins. To separate the guide from the springs:--- remove clips C and washer D. H separate the spring guide from ring of the crank handle. CUTION Do not scratch the teflonised ring. lefthand springs Continue charging the operating mechanism using the operating lever. The springs are compressed N revision : 01

34 F G J H s 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. 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. CUTION 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. Keep pressing on the lever while pulling the righthand crank handle towards you until the ratchet wheel latches. tthesametimepresstheclosing button and the charging lever in order to release the latching unit N revision : 01 33

35 Stop charging as soon as the lamp comes on: the arcing contacts of the three phases are in contact. CUTION 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 If the poles activate the bell when the finder is in the red area, all 3polesmust be replaced. Red Green worn arcing contacts fitting the right and lefthand closing springs CUTION these springs can be fitted atthesametime Disconnect the tester Slowly close the circuit---breaker until your hear the end of charging click. Press the push button. The device should open N revision : 01

36 Place the rings on the pins of the right and lefthand crank handles. CUTION 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. C 1 C 2 D CUTION Do not lubricate the teflonised ring. Place washers D and clips C (to the right and left). Remove the screws or pins. Finish charging. Checking Closethenopenusingthe I and O push buttons, in order to deactivate the operating mechanism N revision : 01 35

37 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. The springs are compressed. H lubricate the guides H oil the phosphatised springs CUTION Do not lubricate the teflonised ring. WRNING brush must be used to lubricate. Do not disassemble the spring to perform this operation. opening spring local manual closing of the circuit-- breaker CUTION 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 N revision : 01

38 The springs are compressed. H lubricate the guides H oil the phosphatised springs WRNING brush must be used to lubricate. Do not disassemble the spring to perform this operation. local manual opening of the circuit-- breaker 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. operating mechanism unit Clean the entire subassembly Oil all the phosphatised parts Check presence of the auman hoops. Lubricate the pins and hinges. WRNING brush must be used to lubricate. Do not disassemble the operating mechanism to perform this operation N revision : 01 37

39 latching unit Clean the entire subassembly then oil the phosphatised parts Lubricate the latching units and pins. WRNING 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. WRNING brush must be used to lubricate. Do not disassemble the gear motor to perform this operation N revision : 01

40 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 fter--- Sales representatives. Foranyothermaintenance operations, please contact your nearest Groupe Schneider service centre. fter each operation perform the electrical tests in accordance with applicable standards. CUTION when replacing parts, all the accessories listed below MUST be placed by the new equipment: -- Nylstop -- Contact washer -- Hoop -- Circlips -- Clips -- 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 (S) =S= or Customer replacing the microswitch (SQ) =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= N revision : 01 39

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

42 C D s soon as possible, insert a screw or pin 6 mm diameter and 40 mm longintheholeshownabove. Release the lever. The springs then exert pressure on pin. To separate the guide from the springs: H remove clips C and washer D. H separate the spring guide from ring of the crank handle. CUTION do not scratch the teflonised ring. lefthand springs Continue charging the operating mechanism using the operating lever. The springs are compressed N revision : 01 41

43 F G J H s soon as possible, insert a screw or pin F 6mmindiameterand 40 mm long in the hole shown above. Release the lever. The springs then exert pressure on pin F. 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. CUTION do not scratch the teflonised ring. fitting the right and lefthand closing springs CUTION 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 N revision : 01

44 Place the rings on the pins of the right and lefthand crank handles. CUTION 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. 1 C 2 D CUTION do not lubricate the teflonised ring. Place washers D and clips C (to the right and left). Remove the screws or pins. Finish charging. checking Closethenopenusingthe I and O buttons, in order to deactivate the operating mechanism N revision : 01 43

45 replacing a release the different release positions in the operating mechanism release undervoltage shunt release overcurrent top view of assembly position single closing - I ack Front undervoltage ack - II Front single opening - - ack ack III IV double opening - - Front ack Front V Front according to position I single closing removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting 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 moves to eccentric catch N revision : 01

46 according to position II undervoltage removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting 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. according to position III or IV shunt release or overcurrent removal N: 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 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 moves to eccentric catch N revision : 01 45

47 according to position V shunt release or overcurrent (two coils) removal Mark and disconnect the wires. Remove the two M6 fixing screws. Remove the release. fitting 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 moves to eccentric catch. 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 N revision : 01

48 replacing a microswitch (S) 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 N: removal of the lefthand closing spring simplifies this operation. C Remove clip and spacer in order to withdraw pin C. wrench can be passed through thewindowtoremovescrew. 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 Remove the two screws in order to release contact holder D. Swivel the guide in order to bring nut up in front of the window. Remove the fixing screw N revision : 01 47

49 D D Swivel the contact. Slide holder assembly D and contacts upwards in order to release it from the guide and operating mechanism. Remove the faulty contact. Mount the new contact on the holder. CUTION only mount one screw on the righthand contact. Tightening torque: 2.8 Nm. fitting D 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. Tightening torque: 2.8 Nm N revision : 01

50 C D Put back the contact holder D without tightening the bolts. Fit pin C, spacer and clips. checking 0,1 mm mini 0,5à1mm F nsure 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 is fixed onto the auxiliary contacts by strap. Remove fixing bolt C and retrieve it for fitting. Remove relay and insulating plate D. C fitting Proceed in reverse order from removal. Tightening torque: 2 Nm N revision : 01 49

51 replacing an auxiliary contact unit removal 1 C D uxiliary contact unit contacts contacts Mark and disconnect the wires. For a 5---contact unit: loosen bolts and release crank handles and C. For a 9---contact unit: loosen bolt D and release crank handle. 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. olt tightening torque: andd:10nm. G:2Nm N revision : 01

52 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 IC and accordiing to the following instructions. The gas must be treated in compliance with IC intervention method Tool necessary for the operation Unscrew the plug (). Plug dismounted. Vacuum/filling device connected. Wait until the pressure guage shows 0 (15 min to empty the tank) before removing the connection N revision : 01 51

53 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 lectrical operating mechanism: motor Insufficient voltage at motor terminals: H restore voltage H replace motor if necessary nd 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 ll 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. ntipumping relay or direct releases H H replace the relay readjust The circuit-- breaker does not open manually or by remote control 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. lert 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 N revision : 01

54 group Schneider lectric 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 lectric service centers. Schneider lectric Industries SS 89, boulevard Franklin Roosevelt F Rueil--- Malmaison (France) Tel:+33(0) electric.com N revision : 01 s 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 dition du : 14/04/2008