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Содержание HVK Series

Страница 1: ...K 6Q50 VK 10Q50 NOTES 1 The designation of H before VK ie HVK denotes that the circuit breaker unit was assembled in the USA using domestic and foreign components All references to model numbers in this manual will be by the numbers following the VK and HVK 2 This manual was written for the Toshiba type form circuit breakers listed on this page used in conjunction with Toshiba cells For circuit br...

Страница 2: ...alent 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 Unauthoriz...

Страница 3: ... Courtesy of NationalSwitchgear com ...

Страница 4: ...8 18 18 19 OPERATION 19 Manual Operation Electrical Operation Control Circuit Operation Closing Sequence Charging Sequence Tripping Opening Sequence Mechanism Operation Closing Charging Tripping Trip Free 20 20 20 20 20 25 25 25 25 25 26 MAINTENANCE Maintenance Program Maintenance Record Servicing Equipment Inspection and Maintenance Types Inspection and Maintenance Intervals Wipe Measurement Vacu...

Страница 5: ...f Courtesy of NationalSwitchgear com ...

Страница 6: ...AUTION Means that you might be injured if you do not follow instructions Equipment damage might also occur NOTE Gives you helpful information SAFETY CODES Comply with ail applicable state and local codes Unless superseded by state and local codes adhere to all applicable ANSI OSHA IEEE NEMA and National Electrical Code NFPA 70 and Maintenance Procedures in NFPA 70B standards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 standard...

Страница 7: ...RATION 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 Rachet Handle Up and Down Until A Click is Heard And Spring Indicator Reads CHARGED Yellow Ratchet Handle No Further Remove Handle and Replace Socket Cover Push the CLOSING BUTTO...

Страница 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 ...

Страница 9: ...ck the equipment 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 equipment damage to occur This may cause 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 ...

Страница 10: ... personal injury Fig 3 Lifting the Circuit Breaker with Lifting Hooks Always keep the circuit breaker in a generally upright position ACAUTION When lifting the circuit breaker willtilt slightly backwards Standclear of the breaker when lifting or you may be injured Always use lifting equipment suitable for handling the weight of the unit The capability of the lifting equipment to handle the size an...

Страница 11: ...g should be restored if possible 2 Do not subject the equipment to moisture or sun rays Store in cool clean and dry location 3 Place a dust cover over the circuit breaker packaging to protect against dirt and moisture 4 Store in an upright position INSPECTION DURING STORAGE Routine scheduled inspection is necessary if storage is for an extended period The unit should be checked for condensation mo...

Страница 12: ...fy various components of the circuit breaker COMPONENTS LEGEND Handle for moving circuit breaker Secondary disconnects Rating interlock pin 6M P Q50 8Q40 10Q40 10M P Q50 Interlock lever Wheel Primary disconnects Barrier Racking screw Vacuum interrupter Flexible conductor Insulated operation rod Rating interlock plate 6M P32A 6M P40A 10M P25A2 10M P40A 8M P40A 1 Fig 7 Front View 2 3 4 5 6 7 8 9 10 ...

Страница 13: ...aker unit from being withdrawn until the closing springs are completely discharged B CLOSE PIN INTERLOCK With the circuit breaker closed it cannot be moved between the connected test and disconnected positions Also it cannot be moved into or out of the cubicle The close pin interlock Fig 11 is mechanically held down thus locking the unit in place Additionally a safety plate blocks the racking hand...

Страница 14: ...aker front panel cannot be lifted when the circuit breaker is closed Before lifting the interlock lever verify that 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 15 is open thus electrically preventing the circuit breaker from being closed i Fig 15 Interl...

Страница 15: ...position Hazardous Voltage Turn Off and Lock Out Primary and Control Circuit Power Before Servicing To ensure smooth connection of the self coupling contacts apply a thin film of TOSHIBA B8 grease to the stationary contacts before inserting the circuit breaker into the cell cradle Fig 16 Secondary Disconnects Do not allow grease or any other substances to contaminate insulating materials Contamina...

Страница 16: ...NG Prior to Installation The maximum fault current capacity of the power system at the point of installation should be verified This value must not exceed the symmetrical interrupting capability of the circuit breaker Fig 18 illustrates a typical circuit breaker nameplate and ratings y Spttcp i _ s usrrccwfailil r BREAKER m m ypc V VEYtL w Cfafl SHOUT cneurrAMFs A DANGER Do not exceed the ratings ...

Страница 17: ...0A 10P40A 10Q4O if 750 13 8 15 1 30 36 95 1200 2000 3000 28 3 2 11 5 36 36 58 t 750 13 8 15 1 30 36 95 28 3 2 11 5 36 50 30 13 8 15 95 750 1 30 36 28 2 11 5 3 36 36 58 10P40AO 10Q40 if 1000 1000 2000 3000 13 8 15 1 0 95 37 36 3 2 37 15 37 59 13 8 15 95 1 0 36 3 37 2 15 37 37 59 10M50 10P50 10Q50 13 8 1000 1000 1000 1 30 15 30 95 1200 2000 3000 37 3 11 5 46 2 48 77 13 0 15 1 30 36 95 37 3 2 48 11 5...

Страница 18: ...e switchgear AWARNING Do not attempt to install or remove a circuit breaker above floor level from a compartment by using the lifting eyes or plates Use a Toshiba portable lifter F Discharge springs completely before installation ACAUTION Always insure the portable lifter is operated on a firm and level surface USING THE PORTABLE LIFTER 1 Set wheel stops to the locked position 2 Place the circuit ...

Страница 19: ...r must be securely fixed to the circuit breaker cell before transferring the circuit breaker to or from the cell 5 Remove the circuit breaker interlock pin 6 Follow the procedure MOVING THE CIRCUIT BREAKER IN THE CELL for insertion into the equipment cell MOUNTING PADS Some installations utilize elevated equipment mounting pads This type of installation will increase the overall height of the equi...

Страница 20: ...sing spring charged the circuit breaker cannot be moved into or out of the cell NOTE 2 With the circuit breaker closed it cannot be moved between the Connected Test and Disconnect Positions and it cannot be moved into or out of the cell Test Position This position is between the Disconnected Position and the Connected Position Fig 24 Fig 23 Circuit Breaker at Disconnected Position To Move the Circ...

Страница 21: ...ing Interlock Lever 2 Lift the interlock lever 3 Insert the racking handle as shown in Fig 27 4 Turn the handle clockwise Fig 28 The circuit breaker will move inward 5 Stop rotating the racking handle when the racking screw thread has cleared the racking nut You will hear a click sound as the arrow at the lower part of the circuit breaker comes in line with the red line of the Connected Position i...

Страница 22: ...not push the closing button green while the Interlock Lever is lifted 3 Insert the racking handle Fig 27 4 Turn the racking handle counterclockwise to move the circuit breaker to the Test Position 5 Stop rotating the racking handle when the racking screw thread has cleared the racking nut You will hear a click sound as the arrow at the lower part of the circuit breaker is aligned with the red line...

Страница 23: ...ed field wiring are free from short circuits and grounds Refer to the MAINTENANCE Section of this manual for additional information Do not energize damaged equipment that has not been repaired or verified Do not remove cover or destroy any safety signs AWARNING AWARNING Do not operate this equipment until all panels and covers have been replaced Hazardous voltages are present during dielectric tes...

Страница 24: ...ging handle and replace the cover plate to the opening NOTE 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 green and the circuit breaker will close Fig 32 At this time the open closed indicator reads CLOSED red and the spring charging indicator turns to DISCHARGED white ACAUTION To avoid equipment d...

Страница 25: ... motor stops The spring charging is now completed B Electrical Closing Operation When the closing switch is turned to CLOSE position the closing coil will be immediately energized and the circuit breaker willclose 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 Upon the completion of chargin...

Страница 26: ... 1 T5 _13_ A v v v V 5 7 A A i LS I I L I L IT LS D1 2flC5 iiD2 rz X a b1 M iza5 prt 5 rra1 ZZa2 z a3 p b2 Tb3 R1 R1 A r b J QR3 R2 R2 D 0 C1 X b C2 X a fljD3 D5 F 04 V N f N f S S S2 VI 52 56 60 54 5B 62 16 14 V Y 10 E i _ _L _ _ X _ N2 N3 Fig 35 100 125 VDC Control Circuit Schematic Courtesy of NationalSwitchgear com ...

Страница 27: ...250 VDC Control Circuit Schematic SYMBOL DESCRIPTION Y Auxiliary relay coil Y b Auxiliary relay contacts N O X Control relay coil X a Control relay contacts N O X b Control relay contacts N C CC Closing coil TC Trip coil a1 a5 Auxiliary contacts N O b1 b5 Auxiliary contacts N C M Charging motor LS Limit switches D1 D5 Diodes R1 R4 Resistors IL Interlock switches C Capacitor F Fuse LCS Latch Checki...

Страница 28: ...tion LS ON and dosing spring charged r LS OFP r Trip signal Start of breaking operation r Completion of breaking operation ON Motor OFF Charged Discharged Closing Spring Charged Discharged Opening spring ON r Closing coil OFF ON r Trip coil OFF ON Main drcuit OFF Fig 38 Sequence of Operation Courtesy of NationalSwitchgear com ...

Страница 29: ...Page 24 OPERATION Fig 39 Mechanism Courtesy of NationalSwitchgear com ...

Страница 30: ... in Fig 41 in which the circuit breaker is closed Mechanism Opened B Charging From the closed condition of Fig 41 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 41 Mechanism Immediately after Closing by Signal When the trip shaft is released by the trip button or the trip coil all the links return ...

Страница 31: ...roper maintenance can cause severe injury death and property damage Only qualified and authorized persons are to install operate or service this equipment FiVTOMkM Table 3 Switchgear Recommended Torque Values Do not allow grease or any other substances tocontaminateany insulating materials Contaminated insulators can allow Hardware Size Recommended Torque a short circuit or ground fault to occur N...

Страница 32: ...o not service a circuit breaker unit while connected to the line terminals Withdraw the de energized circuit breaker from the energized main bus before servicing 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 comp...

Страница 33: ... conductive parts with Toshiba B8 grease 3 Close and trip circuit breaker manually and electrically to insure proper operation of mechanism Check wipe measurement Pg 36 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 wi...

Страница 34: ...Page 29 MAINTENANCE Fig 43 Points and Types of Lubrication Courtesy of NationalSwitchgear com ...

Страница 35: ...y 3 years Should the circuit breaker be subjected to a severe condition such as drop collision earthquake or fire contact Toshiba International Corporation for a complete inspection Operations Inspection inspection Year Acceptance Pre energization Check Acceptance Pre energization Check VisualI 0 0 Visual I 1000 Periodical i 3 2000 Periodical I 3000 Detain 6 4000 9 5000 i 6000 Detail Overhaul 12 7...

Страница 36: ...se a brush or vacuum cleaner Deformation excessive wear and damage Visual check There should be no deformation excessive wear or damage Remove cause and replace parts Visual check Lost or missing parts There should be no missing parts Reinstate to the normal condition Bus supports Visual check check tightness with tools Bus supports must be secure and undamaged Replace damaged parts and tighten un...

Страница 37: ...ual check All covers guards and barriers must be securely in place All unused openings must be covered Replace or repair as needed Visual check Safety signs labels nameplates etc should not be covered or obscured by paint They must be securely affixed Repair or replace as needed Safety Signs 2 Operating Mechanism and Safety Devices Visual check There should be no dust and foreign matter Remove for...

Страница 38: ...39 in or less Vacuum pressure See Vacuum Check section Factory service required when vacuum pressure is not sufficient Pg 37 Number of open close operations Counter When the counter reading reaches 6 000 or 6 years of service has been reached for the rated current interruption check the internal pressure Follow up checks should be made every 3 years of service thereafter or until the counter readi...

Страница 39: ...ct surface has no grease on it apply a small amount of Toshiba B8 grease Replace if the contact is discolored 6 Control Circuit Closing and tripping electrically Check at the Test Position or out of cell using a Toshiba auxiliary test cabinet Check circuits and the closing and tripping devices also check the microswitches and fuses The closing and tripping operations can be done smoothly Secondary...

Страница 40: ... o m There should be no cracks or damages Factory service required if cracked or damaged 9 Measurement When the insulation resistance between the main circuit is low clean the surface of the vacuum interrupter with a dry cloth and then take measurements again of Measuring location Insulation resistance Megger Insulation Resistance Main Circuit Ground 500 Mohm or more 1000V Control Circuit Ground 2...

Страница 41: ...operty damage Fig 46 Wipe Inspection AWARNING 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 6M32A 6P32A 6M40A 6P40A 8M40A 8P40A 10M25A2 10P25A2 10M40A 10P40A With the circuit breaker closed visually check the wipe mark red as shown in Fig 46 The interrupter must be replaced when the wipe mark i...

Страница 42: ...maximum permitted by standards RadiationExposure Hazard X rays may cause illness or injury Stay at least 1 meter 3 3 ft away from circuit breaker during this test wwmmx 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 pages 39 and 40 Fig 49 is an example of a test...

Страница 43: ... 38 0 3kVA 100V 30kV 5A O r I i I I I V CM50V I T I c j J j S Auto transformer Supply source 0 5A VCB Rg 49 Example of Withstand Voltage Test Circuit Rg 50 Method of Applying Voltage Courtesy of NationalSwitchgear com ...

Страница 44: ...current is found with a voltage increase the interrupter is good rv7j i i ci RadiationExposure Hazard X rays may cause illness or injury Stay at least 1 meter 3 3 ft away from circuit breaker during this test 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 49 2 Circuit...

Страница 45: ...t Criteria 1 If the current increases with a voltage increase the interrupter is defective 2 If zero or negligible less than 0 5 A current is found with a voltage increase the interrupter is good 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 49 2 Circuit Breaker Test...

Страница 46: ...o MOC or other problem Mechanical Unit has been utilized for a Conversion Requires factory service contact your conversion manufacturer Aux Switch poor contact or burned Replace Fig 55 Fig 56 Fig 59 Control Circuit Control relay poor contact or burned Replace entire control circuit board Fig 55 Fig 66 Fig 68 Aux Relay poor contact or burned Replace entire control circuit board Fig 55 Fig 66 Fig 68...

Страница 47: ...ig 39 Closing catch unable to reset Mechanism Undesirably closes without a closing signal Closing shaft unable to reset Fig 39 Fig 34 Fig 37 Short circuit of the closing circuit and the power supply circuit Identify and correct Control circuit Trip coil burned or galled Fig 55 Fig 60 Fig 64 Replace Mechanism Does not trip at all when a tripping signal is supplied Fig 39 Trip shaft and trip catch g...

Страница 48: ...ig 60 Fig 64 Terminal and connector poor contact or burned Replace There is a tripping sound but it actually did not trip Mechanism Link galled Fig 39 Undesirably trip without a tripping signal Mechanism Trip catch damaged Fig 39 Control circuit Short circuit of the tripping circuit and the power supply circuit Identify and correct Fig 34 Fig 37 Item Requires Factory Service Consult Toshiba Intern...

Страница 49: ...art 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 ...

Страница 50: ...connect the link from the main shaft of the operating mechanism by removing the screw Fig 56 Remove the four screws which attach the auxiliary switch to the circuit breaker Fig 57 Remove wires connected to the auxiliary switch Mark the auxiliary switch terminal numbers on the wire terminals to prevent mis wiring Re attachthe wires to the new auxiliary switch When rotated to the proper position the...

Страница 51: ...he circuit breaker is CLOSED 11 Manually close the circuit breaker by pressing the Closing 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 IT 12 15 16 and 19 20 13 Manually trip the circuit breaker by pressing the Trip Button 14 Confirm that the circuit breaker can be e...

Страница 52: ...rm the resistance and armature stroke of the new coil is correct by using Table 6 If a measured value is different from that listed in the table contact Toshiba International Corp for assistance Table 6 Coil Resistance and Armature Stroke 1 VOLTAGE RESISTANCE STROKE DC 30 3 780 5 48 50 7 750 5 Remove Screws 100 110 27 700 5 7mm 0 5mm 38 500 5 125 200 220 126 200 5 250 187 600 5 2 Remove the front ...

Страница 53: ...ker is CLOSED Fig 64 Wipe Measurement 8 Confirm that the coil operates the circuit breaker by the voltage range in Table 7 If the circuit breaker does not operate within the specified range contact Toshiba International Corporation Table 7 Coil Voltage Operating Range RATED VOLTAGE CLOSE VOLTAGE RANGE DC TRIP VOLTAGE RANGE DC DC 24 14 28 24 36 30 18 36 48 50 38 56 28 56 100 110 80 124 56 124 Fig 6...

Страница 54: ...information concerning Circuit Boards other than 3N9A0007 A contact Toshiba International Corporation NOTE Table 8 Control Circuit Board Voltage Circuit Board 3N9A0007 A Check Point R3 in Fig 66 Control Voltage 30 DC 48 DC 100 110 DC 125 DC 200 220 DC 250 DC 10Oohm 2W 240ohm 2W Resistance and Capacity 750 ohm 2W 1kohm 2W 3kohm 2W 7 5kohm 2W 1st Color Code BROWN RED PURPLE BROWN ORANGE PURPLE 2nd C...

Страница 55: ...w Push the connector into the control circuit board socket until locked in place Confirm that the circuit breaker properly operates electrically 5 n v7 t Sv 6 t 4 7 i t vA 8 ifivmigH 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 C...

Страница 56: ... 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 69 Fig 70 Remove the Thumbscrew 3 ACAUTION Turning or rotating connector case or pulling on connecto...

Страница 57: ...s electrically 8 AWARNING 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 1 Courtesy of NationalSwitchgear com ...

Страница 58: ... 4D9A2174G004 100VDC 65 h 38 4D9A2174G005 50 48VDC 30VDC 4D9A2174G006 24VDC 4D9A2174G007 250VDC 4D9A2176G001 2 Auxiliary relay unit 1 220 4D9A2176G002 1 k 200VDC 125VDC 4D9A2176G003 133 110 4D9A2176G004 00Q 0D00 100VDC 50 4D9A2176G005 90 40 48VDC 30VDC 4D9A2176G006 3 Auxiliary switch 4D9A2177G004 1 127 Secondary disconnects VCB side 4 2 4D9A2179G001 165 58 Secondary disconnects Cell side 5 4D9A217...

Страница 59: ...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...

Страница 60: ... 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 Con...

Страница 61: ...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 will reset automatically only after the control circuit ...

Страница 62: ...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...

Страница 63: ... Courtesy of NationalSwitchgear com ...

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