Toshiba VK Series Instructions Manual Download

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Summary of Contents for VK Series

Page 1: ...32B1 VK 6M32B2 VK 6M32B3 VK 6P32B1 This manual was written for the Toshiba type form circuit breakers listed on this page used in a fixed application For circuit breakers utilized in the conversion of other equipment a supplemental instruction manual should be obtained from the conversion manufacturer NOTE Issued 2 95 Courtesy of NationalSwitchgear com ...

Page 2: ... equivalent INQUIRIES should be addressed to Field Service Department Toshiba International Corporation 13131 West Little York Road Houston Texas 77041 USA Telephone 713 466 0277 800 231 1412 800 527 1204 Canada 713 466 8773 Fax Use only Toshiba authorized replacement parts This equipment is designed and built in accordance with applicable safety standards in effect on the date of manufacture Unau...

Page 3: ...i Courtesy of NationalSwitchgear com ...

Page 4: ...g Opening Sequence Mechanism Operation Closing Charging Tripping Trip Free 12 13 13 13 13 13 19 19 19 19 19 MAINTENANCE Maintenance Program Maintenance Record Servicing Equipment Inspection and Maintenance Types Inspection and Maintenance Intervals Maintenance and Inspection Chart Wipe Measurement Vacuum Check Troubleshooting Guidelines Replacement of Parts Auxiliary Switch Closing Coil and Trip C...

Page 5: ... Courtesy of NationalSwitchgear com ...

Page 6: ...injured if you do not follow instructions Equipment damage might also occur NOTE Gives you helpful information SAFETY CODES Comply with all applicable state and local codes Unless superseded by state and local codes adhere to all applicable ANSI OSHA IEEE NEMA and National Electrical Code NFPA 70 and Maintenance Procedures in NFPA 70B standards This includes standards pertaining to the manufacture...

Page 7: ...RUCTION MANUALS OR TECHNICAL ASSISTANCE CALL 1 SOO 231 1412 TOSHIBA INTERNATIONAL CORPORATION SAFETY INSTRUCTIONS READ INSTRUCTION MANUAL BEFORE ATTEMPTING THE FOLLOWING PROCEDURES MANUAL OPERATING PROCEDURE TO CHARGE SPRINGS Remove Charging Handle Socket Cover and Insert Charging Handle into Socket Opening Rachel Handle Up and Down Until A Click is Heard And Spring Indicator Reads CHARGED Yellow ...

Page 8: ...nt and aware of the hazards involved 3 Be trained and authorized to safely energize de energize clear ground lockout and tag circuits in accordance with established safety practice 4 Be trained and authorized to perform the service maintenance or repair of this equipment 5 Be trained in the proper care and use of protective equipment such as rubber gloves hard hat safety glasses face shield flash ...

Page 9: ...ipment sufficiently to check for missing parts or concealed damage 3 Keep the equipment upright Fig 2 A CAUTION Never lay the equipment on its side or upside down This may cause equipment damage to occur 4 File a claim with the carrier for any damaged or missing items and immediately notify the nearest Toshiba International Corporation representative Do not install or energize equipment that has b...

Page 10: ... breaker when lifting or you may be injured Fig 3 Lifting the Circuit Breaker with Lifting Hooks Always use lifting equipment suitable for handling the weight of the unit The capability of the lifting equipment to handle the size and weight of the circuit breaker should be confirmed prior to lifting A CAUTION Attempting to manually lift the circuit breaker can cause serious injury or equipment dam...

Page 11: ... in an upright position Fig 5 Circuit Breaker Storage INSPECTION DURING STORAGE Routine scheduled inspection is necessary if storage is for an extended period The unit should be checked for condensation moisture corrosion and vermin Prior to installation the circuit breaker should be carefully examined for evidence of physical damage corrosion or other deterioration Refer to the PRE ENERGIZATION s...

Page 12: ...fy various components of the circuit breaker COMPONENTS LEGEND 1 Handle for moving circuit breaker Secondary terminals Interlock lever Grounding lug Primary conductor Barrier Mounting angle Wheel Vacuum interrupter Flexible conductor Insulated operation rod 2 Fig 6 Front View 3 4 5 6 7 8 9 10 11 Use only genuine Toshiba replacement parts and accessories Improper components could cause the circuit ...

Page 13: ...t the open closed indicator reads OPEN green When the interlock lever is lifted the closing action is blocked both electrically and mechanically With the interlock lever up the microswitch Fig 10 is open thus electrically preventing the circuit breaker from being closed Fig 10 Interlock Lever Microswitch SECONDARY CONTROL CIRCUIT TERMINALS The secondary control circuit terminals are located on top...

Page 14: ...should be verified This value must not exceed the symmetrical interrupting capability of the circuit breaker Fig 12 illustrates a typical circuit breaker nameplate and ratings VACUUMCIRCUITBREAKER TYPE VK 6M32B3 7 C 0S VOLTS RANGE SMC0 K0 V DC 2 s 70 tjQ y oc vci s _____ 1 FACTOR IMPOSE ir t C0VTW OCS AMPS SHOET OPCJir AUPS KTeRStfTlNG ARTS i Sll iST Cr 3 S SsF 0 1 24 7R VOLTS 3ASGE so v CLOSE MC ...

Page 15: ...0 4 76 1 24 19 60 2 3 85 58 3 36 36 250 19 4 76 1 24 60 3 2 3 85 36 36 58 250 1 24 4 76 4 76 19 60 2 29 3 3 85 36 36 58 3 85 250 1 24 19 60 2 58 3 36 36 Numbers in parenthesis refer to the NOTES below NOTES 1 Maximum voltage for which the circuit breaker is designed and the upper limit for operation Required Symmetrical Interrupting Vmax Vop Capability SCA X 2 K is the ratio of rated maximum volta...

Page 16: ... breaker and associated field wiring are free from short circuits and grounds Refer to the MAINTENANCE Section of this manual for additional information rrv7 izii cl Do not energize damaged equipment that has not been repaired or verified AWARNING Do not remove cover or destroy and safety signs AWARNING AWARNING Hazardous voltages are present during dielectric testing which can result in serious i...

Page 17: ...e opening The number of times the handle must be operated depends on the angle of handle operation B Manual Closing Operation Push the manual closing button and the circuit breaker will close Fig 15 At this time the open closed indicator reads CLOSED red and the spring charging indicator turns to DISCHARGED white A CAUTION To avoid equipment damage do not push the closing button green while the ci...

Page 18: ... close The open close indicator will then read CLOSED red After the closing of the breaker the charging motor will immediately begin to charge the closing springs The open closed indicator will read CLOSED red and closing spring charging indicator will read CHARGED yellow C Electrical Opening Tripping Operation When the trip switch is turned to TRIP position the trip coil will be immediately energ...

Page 19: ...16 14 56 BO 10 6 I _ _ L _ N2 N3 Fig 17 30 48 VDC Control Circuit Schematic VK 6M32B P2 T P3 T P1 I A CC523 A CCSI D I i i Y i 51 55 59 53 57 6 1 15 13 9 5 I l LS T X 1 L I L Z LS 6 Ml ZLCS Zbl i R4 R4 0 I m2 1 a3 rza4 TD2 2 01 Zb4 Zia5 zt 5 a1 1 Y b Y b Dr3 z C1 X b r X a D3 n cc 05 r D4 16 14 52 56 SO 54 56 6 2 10 6 _ _L _ N2 N3 Fig 18 100 125 VDC Control Circuit Schematic VK 6M32B Courtesy of N...

Page 20: ...51 15 13 55 5 9 9 5 ILS I X L I L LS XLCS 01 0i k 02 Y 62 r1 rz a ZZ x a 61 I R4 04 i Yb3 i f64 r a5 65 a3 za4 T R1 R1 0 Y 6 Y b QR3 X IR2 IR2 B D 0 D C1 X 6 r X a A 03 n L F i i T 04 t 5B 62 16 14 56 60 10 6 I L _ N2 N3 Courtesy of NationalSwitchgear com ...

Page 21: ...X _ N2 N3 N1 Fig 21 100 125 VDC Control Circuit Schematic VK 6M P32B1 VK 6M32B2 VK 6M32B3 P2 T P3 r P1 I 4 c CS23 A c CS13 1 h 5 7 6 1 1 5 1 3 5 5 5 9 9 5 i i T L S I T4 I L I L i r L S i i i i i Z LC5 D1 D2 i b2 i a1 Z X a I I bl R4 R 4 i T i 0 b3 Zb4 i z a5 Tb5 j a3 a4 a2 i RllR1 i 0 Y b Y b i i i 0R 3 I R 2 R2 C 2 0 C1 X b i X b 0 i i i X a I i D3 Uf D5 i i i i M D4 i 5 8 6 2 1 6 1 4 5 6 6C 10 ...

Page 22: ...k switches Capacitor C F Fuse LCS Latch Checking Switch Fig 23 Legend for Control Circuit Schematics LS ON and closing spring charged LS OFP r Closing signal i Start of closing operation i Completion of closing operation LS ON and closing spring charged r LS OFP i Trip signal Start of breaking operation r Completion of breaking operation ON Motor OFF Charged Discharged Closing Spring Charged Disch...

Page 23: ...Page 18 OPERATION Fig 25 Mechanism Courtesy of NationalSwitchgear com ...

Page 24: ...in Fig 27 in which the circuit breaker is closed Fig 26 Mechanism Opened B Charging From the closed condition of Fig 27 only the closing cam is rotated by the motor with the circuit breaker kept closed until the roller on the cam engages with the catch C Tripping Fig 27 Mechanism Immediately after Closing by Signal When the trip shaft is released by the trip button or the trip coil all the links r...

Page 25: ...ntrol Circuit Power before servicing M6 80 5 8 M8 200 14 5 M10 350 25 0 M12 450 33 0 Improper maintenance can cause severe injury death and extensive property damage Only qualifiedandauthorized persons are to install operate or service this equipment Do not allow grease or any other substances to contaminate insulating materials Contaminated insulators call allow a short circuit or ground fault to...

Page 26: ...service a circuit breaker unit while connected to the line terminals Withdraw the de energized circuit breaker from the energized main bus before servicing AWARNING Never service the circuit breaker while in the Connected Position 3 Verify that the automatic line terminal shutters are closed Never service a unit unless these shutters are fully closed 4 Never perform service on or next to exposed c...

Page 27: ... by the conversion manufacturer 3 Close and trip circuit breaker manually and electrically to insure proper operation of mechanism Check wipe measurement Pg 27 4 Inspect to insure lubrication of sliding and rotating parts 5 Lubricate sliding and rotating parts with machine oil as required 6 Test the circuit breaker to insure that primary and secondary circuit insulation resistances are within Tosh...

Page 28: ...Page 23 MAINTENANCE Fig 29 Points and Types of Lubrication Courtesy of NationalSwitchgear com ...

Page 29: ...ry 3 years Should the circuit breaker be subjected to a severe condition such as drop collision earthquake or fire contactToshiba International Corporation for a complete inspection Year Inspection Operations Inspection Acceptance Pre energization Check Visual I 0 Acceptance Pre energization Check o 1000 Visual I Periodical I 3 2000 3000 Periodical I 6 Detail I 4000 9 5000 6000 12 Overhaul DetailI...

Page 30: ...e length should be greater than 1 mm 0 04 in Pg 27 Vacuum interrupter Measurement of wipe length Factory is required if the wipe length is 1 mm 039 in or less See Vacuum Check Procedures Vacuum pressure Factory service required when vacuum pressure is not sufficient Pg 28 Number of open close operations Counter or Years of Service When the counter reading reaches 6 000 or 6 years of service has be...

Page 31: ... 36 5 Secondary Control Circuit Terminals Insulation portion Visual check There should be no damage Replace if the is any damage 6 Contamination discoloration or damage Barrier Visual check There should be no dust or foriegn matter Wipe with a clean dry cloth There should be no cracks or damage Factory service required if cracked or damaged Measurement of insulation resistance 7 If the insulation ...

Page 32: ...ient wipe Insufficient wipe will cause poor contact pressure and can result in fire explosion severe injury death and property damage Fig 32 Wipe Inspection Never adjust the wipe of a vacuum interrupter Improper adjustment of the wipe can result in fire explosion severe injury death and property damage For 6M32B 6M32B1 6M32B2 6M32B3 6P32B1 With the circuit breaker closed visually check the wipe ma...

Page 33: ...standards AWARNING RadiationExposure Hazard X rays may cause illness or injury Stay at least 1 meter 3 3 ft away from circuit breaker during this test AWARNING Hazardous voltages are present during dielectric testing which can result in severe injury or death Only qualified personnel should conduct this testing For vacuum check procedures see page 30 Fig 34 is an example of a test circuit that can...

Page 34: ...29 0 3kVA 100V 30kV 5A r I i I _ _L I V 0 150V I I T I L N OO Supply source Auto transformer 0 5A VCB Fig 34 Example of Withstand Voltage Test Circuit Fig 35 Method of Applying Voltage Courtesy of NationalSwitchgear com ...

Page 35: ...current is found with a voltage increase the interrupter is good AWARNING RadiationExposure Hazard X rays may cause illness or injury Stay at least 1 meter 3 3 ft away from circuit breaker during this test AWARNING Hazardous voltages are present during dielectric testing which can result in severe injury or death Only qualified personnel should conduct this testing Set Up 1 Test circuit Fig 34 2 C...

Page 36: ...has been utilized for a conversion Binding due to MOC or other problem Requires factory service contact your conversion manufacturer Control Circuit Aux Switch poor contact or burned Replace Fig 38 Fig 39 Fig 46 Control relay poor contact or burned Replace entire control circuit board Fig 38 Fig 53 Fig 55 Aux Relay poor contact or burned Replace entire control circuit board Fig 38 Fig 53 Fig 55 Mo...

Page 37: ...g 25 Closing catch unable to reset Undesirably closes without a closing signal Mechanism Fig 25 Closing shaft unable to reset Short circuit of the closing circuit and the power supply circuit Identify and correct Fig 17 Fig 23 Control circuit Fig 38 Fig 47 Fig 51 Trip coil burned or galled Replace Does not trip at all when a tripping signal is supplied Mechanism Fig 25 Trip shaft and trip catch ga...

Page 38: ...g 51 Replace Terminal and connector poor contact or burned Replace There is a tripping sound but it actually did not trip Mechanism Link galled Fig 25 Undesirably trip without a tripping signal Mechanism Trip catch damaged Fig 25 Control circuit Short circuit of the tripping circuit and the power supply circuit Identify and correct Fig 17 Fig 23 Item Requires Factory Service Consult Toshiba Intern...

Page 39: ...omponent Part Location AWARNING Use only genuine Toshiba parts Use of non Toshiba parts can result in severe injury death and property damage Only qualified personnel should replace parts within this circuit breaker Courtesy of NationalSwitchgear com ...

Page 40: ...river PROCEDURE 1 Before beginning replacement confirm the number of contacts on the replacement auxiliary switch are correct 5 NO 5 NC Remove the front cover of the circuit breaker Disconnect the link from the main shaft of the operating mechanism by removing the screw Fig 39 Remove the four screws which attach the auxiliary switch to the circuit breaker Fig 40 Remove wires connected to the auxil...

Page 41: ...Do not place your hands or any part of your body inside the circuit breaker or near the mechanism while the springs are CHARGED or the circuit breaker is CLOSED 11 Manually close the circuit breaker by pressing the CLOSE button 12 Confirm the non continuity of the NC b contacts with a tester Terminals No 1 2 5 6 9 10 13 14 and 17 18 Confirm the continuity of the NO a contacts Terminal No 3 4 7 8 1...

Page 42: ...rs Hammer Punch PROCEDURE 1 Before beginning replacement confirm the number of contacts on the replacement auxiliary switch are correct 5 NO 5 NC Remove the front cover of the circuit breaker Remove the four bolts Fig 43 which attach the auxiliary switch support bracket to the circuit breaker Disconnect the link from the main shaft of the operating mechanism by removing the M4 E ring Fig 44 Remove...

Page 43: ...of the NO a contacts with a tester Terminals No 3 4 7 8 11 12 15 16 and 19 20 12 Manually charge the closing springs rwvjiizmrel Unit contains powerful springs Do not place your hands or any part of your body inside the circuit breaker or near the mechanism while the springs are CHARGED or the circuit breaker is CLOSED Replace Front Cover Fig 46 13 Manually close the circuit breaker by pressing th...

Page 44: ...m the resistance and armature stroke of the new coil is correct by using Table 5 If a measured value is different from that listed in the table contact Toshiba International Corp for assistance Table 5 Coil Resistance and Armature Stroke 1 VOLTAGE RESISTANCE STROKE IDC 30 3 780 5 48 50 7 750 5 100 110 27 700 5 7mm 0 5mm 125 38 500 5 200 220 126 200 5 250 187 600 5 2 Remove the front panel of the c...

Page 45: ...it breaker is CLOSED Fig 50 Wipe Measurement Confirm that the coil operates the circuit breaker by the voltage range in the following table Table 6 If the circuit breaker does not operate within the specified range contact Toshiba International Corp 8 Table 6 Coil Voltage Operating Range RATED VOLTAGE CLOSE VOLTAGE RANGE DC TRIP VOLTAGE RANGE DC DC 24 14 28 18 36 30 24 36 48 50 38 56 28 56 100 110...

Page 46: ...t For information concerning Circuit Boards other than 3N9A0007 A contact Toshiba International Corporation NOTE Table 7 Control Circuit Board Voltage Circuit Board 3N9A0007 A Check Point R3 in Fig 52 Control Voltage 30 DC 48 DC 100 110 DC 125 DC 200 220 DC 250 DC lOOohm 2W Resistance and Capacity 240ohm 2W 750 ohm 2W 3kohm 2W 1kohm 2W 7 5kohm 2W 1st Color Code BROWN RED PURPLE BROWN ORANGE PURPLE...

Page 47: ...crew Push the connector into the control circuit board socket until locked in place Confirm that the circuit breaker properly operates electrically Pull Out the Connector 5 6 7 8 Unit contains powerful springs Do not place your hands or any part of your body inside the circuit breaker or near the mechanism while the springs are CHARGED or the circuit breaker is CLOSED Remove the Thumbscrew 9 Confi...

Page 48: ... VDC 4 Amp 48 VDC 2 Amp 100 110 VDC 1 5 Amp 125 VDC 1 5 Amp 200 220 VDC 3 4 Amp 250 VDC 3 4 Amp 2 Remove the front cover of the circuit breaker Disconnect the wire harness connector from the control circuit board socket by pulling the connector straight out while depressing the connector tab to unlock it Fig 56 Fig 57 Remove the Thumbscrew 3 ACAUTION Turning or rotating connector case or pulling o...

Page 49: ...perates electrically 8 Unit contains powerful springs Do not place your hands or any part of your body inside the circuit breaker or near the mechanism while the springs are CHARGED or the circuit breaker is CLOSED 10 Confirm that no parts or tools are left inside the circuit breaker 11 Replace the front cover Courtesy of NationalSwitchgear com ...

Page 50: ...G003 35 i 110 4D9A2174G004 1OOVDC 65 50 4D9A2174G005 48VDC 30VDC 4D9A2174G006 24VDC 4D9A2174G007 250VDC 4D9A2803G001 2 Auxiliary relay unit 1 220 4D9A2584G005 200VDC 125VDC 4D9A2584G004 133 110 4D9A2584G003 0000000 1OOVDC 50 4D9A2584G002 40 h 1 90 48VDC 30VDC 4D9A2580G001 3 Auxiliary switch 1 4D9A2177G004 for VK 6M32B 127 4 Auxiliary switch 1 rl 4D9A2584G011 8 for CZ VK 6M P32B1 VK 6M32B2 VK 6M32B...

Page 51: ...ype cubicle switchgear and alternating current high voltage circuit breakers and 2 The mechanical and electrical designs and operation of the Toshiba vacuum circuit breaker component and the original circuit breaker to be converted must be analyzed to utilize the safest combination of interlocks incorporated in the breaker component and in the truck on which it is installed DO NOT REMOVE DEFEAT OR...

Page 52: ...the control circuit power 2 Depress the Trip Button red followed by the Closing Button green and then depress the Trip Button red once again If the circuit breaker that is being converted utilizes the automatic spring discharge to discharge the closing spring upon either the insertion or withdrawal of the circuit breaker into or out of the cell the Disconnect Position the Test Position or the Conn...

Page 53: ...ation and release any energy stored in the closing springs thus reducing the chances of a serious electrical failure Once the VMD has performed a tripping operation it will cut the control circuit power to the charging motor thus preventing the closing springs from being recharged This will render the circuit breaker temporarily inoperable The VMD willreset automatically only after the control cir...

Page 54: ...esigning conductors to connect to the primary disconnects of the converted circuit breaker testing must be performed to confirm conformance with ANSI IEEE specifications NAMEPLATES per ANSI IEEE C37 59 In order to ensure that the converted equipment performance ratings and responsibility properly established additional nameplates are necessary manufacturer s nameplate shall be retained on the equi...

Page 55: ...RS OF THE EQUIPMENT AND PARTS FOR BREACH OF THE FOREGOING WARRANTY THE COMPANY SHALL HAVE NO OBLIGATIONS TO DISASSEMBLE ANY EQUIPMENT OR PART WHICH IS DEFECTIVE WITHIN THE TERMS OF THE ABOVE WARRANTY OR TO INSTALL ANY REPAIRED OR REPLACEMENT PART OR EQUIPMENT OR TO PAY ANY COSTS INCURRED IN CONNECTION WITH SUCH DISASSEMBLY OR INSTALLATION THE COMPANY TOSHIBA CORPORATION AND THEIR SUPPLIERS AND SUB...

Page 56: ...Courtesy of NationalSwitchgear com ...

Page 57: ...I Courtesy of NationalSwitchgear com ...

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