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Related Manuals for ABB VHK 20
Summary of Contents for ABB VHK 20
- Page 1 I N S T A L L A T I O N / M A I N T E N A N C E I N S T R U C T I O N S Medium Voltage Vacuum Power Circuit Breakers VHK Model 20/21 VHKR Model 80 Model 21 ABB Power T&D Company, Inc. Distribution Systems Division...
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Page 2: Table Of Contents
IB 6.2.7.7-3 TABLE OF CONTENTS INTRODUCTION ......................3 RECEIVING AND STORAGE..................4 INSTALLATION......................4 ........................4 ENERAL ....................5 ENERAL NSPECTION ................5 ACUUM NTERRUPTER XAMINATION ................ 5 ARRIER AND NSULATION NSPECTION ..................5 NSTALLING RONT ARRIER ................. 5 ANUAL PERATION NSPECTION .................... - Page 3 Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser’s purpose the matter should be referred to the nearest District Office or send E-mail to: dsinfo@ustra.mail.abb.com.
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Page 4: Introduction
IB 6.2.7.7-3 discarding any packing material. If any shortage INTRODUCTION of material is discovered, promptly notify the nearest District Office. Information specifying the This manual contains instructions for inspection, purchase order number, device serial numbers application, installation, operation, testing, and part numbers of the damaged or missing adjustment and maintenance of all VHK Model parts should accompany the claim. -
Page 5: General Inspection
IB 6.2.7.7-3I If the Retaining Strap is not removed, the UVTD by compressed air or with a clean lint-free cloth. If will not be able to trip the breaker. these parts have become contaminated with any heavy dirt or grease, a clean, lintless cloth saturated with alcohol should be used. -
Page 6: Padlock Provision
IB 6.2.7.7-3 A. When in the WITHDRAW position, the Padlock Hasp Provision Closing Springs will discharge automatically. If the Closing Springs have been previously Refer to Figure A6 located in the Appendix. The charged, they will discharge when the racking Racking Mechanism Padlock Hasp provision mechanism reaches this position. - Page 7 IB 6.2.7.7-3I NOTE: If the Release Lever cannot be turned to NOTE: When the Racking Mechanism is the left, make sure breaker is first in the Open between the WITHDRAW, DISCONNECT, position. TEST, or CONNECT positions the Manual Trip Button should have a slight amount of C.
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Page 8: Installing Circuit Breaker Into Compartment
IB 6.2.7.7-3 Rack Screw rotate crank WARNING counterclockwise until a definite resistance is For safety, when racking the circuit breaker "to" or felt (Do Not Force). "from" the CONNECT position, the compartment door must be closed, and the racking crank NOTE: If the Index Lever is observed (and/or inserted through the opening provided in the heard, by a "click"... -
Page 9: Removal From Test Position
IB 6.2.7.7-3I an operational check indicates a problem. course, during the maintenance checks, all Removal From TEST Position accessible bolts, units and screws should be routinely checked to insure that they are tight. 1. Turn the Release Lever to the left, rotate the Crank one-quarter (¼) turn counterclockwise, It is recommended that the circuit breaker be and then release the Release Lever. -
Page 10: Insulation Cleaning
IB 6.2.7.7-3 designed special application, appropriate supplemental maintenance program Contact Wear and Contact Pressure has been developed. These maintenance (Contact Wipe) instructions only cover circuit breakers used under the standard service conditions. The amount of contact wear can be determined by measuring what is referred to as Contact Wipe (or At the selected maintenance period, the following overtravel). -
Page 11: Contact Gap Check
IB 6.2.7.7-3I on a used breaker with an interrupter nearing "Contact Gap". It is not expected that the contact replacement. As the breaker sees service, and sequence should exceed the 4 millisecond limit, the contacts start to erode, this value will increase. therefore, before attempting to readjust, verify that the test equipment and procedure are correct. -
Page 12: Closing And Opening Times
IB 6.2.7.7-3 Gap and Contact Wipe are inversely related; • Adjustments to correct times, if found to be increasing one decreases the other, and visa- versa. Also, note that no more than one-half (1/2) outside limits, are critical and the nearest turn should be required when readjusting for District Office should be contacted for contact sequence. -
Page 13: Trip Latch Engagement (Bite)
(hardened and darkened), or if breaker. parts are replaced, any relubrication should be done with the same lubricant, available from ABB 4. Back off the Adjusting Screw (3) 2 turns. as part number 712994-C00 (1 LB can). Note the following: WARNING Keep hands clear of all moving parts. - Page 14 IB 6.2.7.7-3 the required test voltage cannot be sustained NOTE: Only an AC hi-pot test is recognized as a across open contacts vacuum valid test. DC, Meggers, etc. are not valid for hi- interrupter, the interrupter may be faulty and must pot testing.
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Page 15: Electrical Characteristics Of Control Devices
IB 6.2.7.7-3I 4. When limit switch "LSb" in the motor circuit ELECTRICAL CHARACTERISTICS OF closes, spring charging motor CONTROL DEVICES - ( REFER TO energized, which in turn recharges the closing FIGURES A12 AND A13 IN THE springs. APPENDIX) 5. When the circuit breaker closes, all auxiliary switch "b"... - Page 16 IB 6.2.7.7-3 1. Immediately upon the availability of control power at terminals "05" and "02", the spring 7. After the breaker has closed and when the charging motor is energized, which in turn closing control switch is released by the charges the closing springs.
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Page 17: Ground And Test Devices
IB 6.2.7.7-3I GROUND AND TEST DEVICES RENEWAL PARTS Only those renewal parts that will be required to These devices are supplied when ordered with insure proper and timely maintenance for normal certain component variations such as Test Ports operation of the VHK vacuum circuit breakers are and Interlocks. -
Page 18: Appendix
APPENDIX IB 6.2.7.7-3 LIFTING YOKE ASSEMBLY FRONT COVER LIFTING YOKE MOUNTING HANDLES FIFTH WHEEL HOLE FRONT COVER MOUNTING HARDWARE CIRCUIT BREAKER ASSEMBLY WITH LIFTING YOKE INSTALLED FIGURE A1... -
Page 19: Breaker Assembly With L Breaker Rear - Model 21
APPENDIX IB 6.2.7.7-3I MID – BAND RING INTERRUPTER INSULATED VACUUM ENVELOPE PRIMARY DISCONNECTS (A.K.A. TULIPS) CIRCUIT BREAKER REAR – MODEL 21 FIGURE A2... -
Page 20: Odel 21
APPENDIX IB 6.2.7.7-3 MANUAL TRIP BUTTON MANUAL CLOSE OPERATIONS LEVER MOTOR COUNTER DISCONNECT MANUAL CLOSE/OPEN SWITCH DISCONNECT INDICATOR LEVER FRONT CIRCUIT BREAKER PANEL – MODEL 21 FIGURE A3... -
Page 21: Odel 30
APPENDIX IB 6.2.7.7-3I MOTOR DISCONNECT SWITCH LOCAL ELECTRICAL CLOSE AND TRIP MANUAL TRIP BUTTON MANUAL CLOSE LEVER OPERATIONS COUNTER SLOT FOR MANUAL CLOSE/OPEN CHARGE LEVER INDICATOR FRONT CIRCUIT BREAKER PANEL & ACCESSORIES – MODEL 80 FIGURE A4... -
Page 22: Operated Circuit Breakers
HANDLE ENGAGEMENT BOTTOM POSITION TOP POSITION “WINGS” ON HANDLE REMOVED FOR CLARITY GENTLY ALLOW THE HANDLE TO RETURN TO THE READY POSITION USE SMOOTH CONSISTENT BEING CAREFUL NOT TO ALLOW THE HANDLE TO DISENGAGE FROM UPWARD MOTION. THE PAWL CARRIER. ORIENT AVOID SIDE-WAYS MOTION OF THE MOTOR... -
Page 23: Circuit Breaker Panel - M Circuit Breaker Panel - M Charging Of Electrically Acking Mechanism & Interlocks
APPENDIX IB 6.2.7.7-3I ADJUSTABLE LINK BLOCKING LEVER LOCATED BEHING BLOCKING SPRING DISCHARGE RACK PLATE LOCK ADJUSTING SCREW SCREW BRACKET LINK TO TRIP LEVER PADLOCK HASP RELEASE LEVER RACKING MECHANISM FIGURE A6... - Page 24 APPENDIX IB 6.2.7.7-3 ADJUSTING SCREW DISCHARGE LINK ASSEMBLY 0.010” 0.031” RACKING SHAFT RACKING MECHANISM (FINAL ADJUSTMENT) FIGURE A7...
- Page 25 APPENDIX IB 6.2.7.7-3I 1 – BREAKER CELL DOOR 2 – ACCESS DOOR TO RACKING MECHANISM 3 – RACK RELEASE LEVER 4 – RACKING CRANK METHOD OF RACKING CIRCUIT BREAKER FIGURE A8...
- Page 26 APPENDIX IB 6.2.7.7-3 APPROX. 3.25 INCHES WIDE APPROX. 6 INCHES APPROX .065” THICK MOLDED CHAIR ASSEMBLY THIN FLAT STRAIGHT EDGE TO MARK PUSHROD. STRAIGHT EDGE SHOULD BE WIDE ENOUGH TO REST ON FLAT SURFACE OF MOLDED CHAIR ASSEMBLY. PUSHROD PUSHROD CONTACT (WIPE) SPRING TRUNION...
- Page 27 APPENDIX IB 6.2.7.7-3I TRIP LATCH ENGAGEMENT ADJUSTMENT FIGURE A10...
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Page 28: Ontrol Device Adjustment
APPENDIX IB 6.2.7.7-3 ROLLER, CLOSE LATCH CHARGING CAM ACTUATOR, LIMIT SWITCH CONTROL DEVICE CLOSE LATCH RELEASE ROD SPRING, CLOSE LATCH RELEASE ROD SECONDARY CLOSE LATCH PRIMARY CLOSE LATCH CONTROL DEVICE ADJUSTMENT FIGURE A11... - Page 29 APPENDIX IB 6.2.7.7-3I a- Auxiliary Switch Contact Closed When Breaker is Closed. b- Auxiliary Switch Contact Open When Breaker is Closed. LCb - Latch Check Switch Contact Closed When Breaker Operating Mechanism is Reset. LSa - Limit Switch Contact Open When Springs are Discharged. Closed When Springs are charged.
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Page 30: Circuit
APPENDIX IB 6.2.7.7-3 c- Auxiliary Switch Contact Closed When Breaker is Closed. d- Auxiliary Switch Contact Open When Breaker is Closed. LCb - Latch Check Switch Contact Closed When Breaker Operating Mechanism is Reset. LSa - Limit Switch Contact Open When Springs are Discharged. Closed When Springs are charged. -
Page 31: Range
APPENDIX IB 6.2.7.7-3I Table A1 - Control Circuit Operating Voltage Range UNDERVOLTAGE Nominal Spring Close Trip Pick-up Drop Out Control Charging Coil Coil Range Range Voltage Motor 24 VDC 19 - 28 VDC 14 - 28 VDC 14 – 19 VDC 7 –14 VDC 48 VDC 38 –... -
Page 32: Ontrol Circuit Operating Voltage Ontrol Circuit Typical Current Vperating Parameters
APPENDIX IB 6.2.7.7-3 TABLE A3 – VHK Operating Parameters 5 VHK (X) 250 5VHK-R 250 7.5 VHK-R 500 15VHK-R 500 15VHK-R 750 MOD 21 MOD 80 MOD 80 MOD 80 MOD 80 5 VHK-R 250 MOD 80 ♠CLOSING TIME (MS) 30 - 50 30 - 50 30 - 50... - Page 33 APPENDIX IB 6.2.7.7-3I...
- Page 34 ABB Power T&D Company, Inc. Distribution Systems Division Division Headquarters Switchgear Systems Circuit Breaker Operations IEC Products & Systems OEM Components After-market Components KIRK Interlock Systems 201 Hickman Drive 2300 Mechanicsville Highway Sanford, FL 32771 Florence, SC 29501 (407) 323-8220...