ABB 5HK Series Installation & Maintenance Instructions Manual Download | Manualshive

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Courtesy of NationalSwitchgear.com

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Summary of Contents for 5HK Series

Page 1: ... Maintenance Instructions Medium Voltage Power Circuit Breakers Type 5HK 1200 thru 3000 Amperes 5000 Volts JL llll Mllll ABB Power Distribution Inc Circuit Breaker Division ASEA BROWN BOVERI Courtesy of NationalSwitchgear com ...

Page 2: ...l From Connected Position Disconnect Position Removal from Switchboard Safe Operation Recommendations MAINTENANCE AND ADJUSTMENTS General Information Contact Pressure Contact and Insulation Cleaning Millivolt Drop Test Puffers Bridge Pivot Opening Times Closing and Opening Times Arc Chutes Operating Mechanism Control Relay Adjustment Racking Mechanism Lubrication Dielectric Tests Electrical Charac...

Page 3: ... promptly notify thenearest districtoffice Informationspeci fying the purchase order number sales order number carton number and part numbers of the damaged or miss ing part should accompany the claim Circuit breakers should be installed in their permanent location as soon as possible If the breakers are not to be placedin service for sometime it is requiredthat adequate means of protection be pro...

Page 4: ...use the soot or dirt can accumulate and with moisture place the circuit breaker in jeopardy dielectrically The lead support moldings are polyester glass and occasionally have some resin rich cracks or crazing develop but these do not indicate defective mate rial and should not cause concern CAUTION CAUTION CAUTION CAUTION 3 7 MANUAL SLOW CLOSE TO CHECK CONTACT PRESSURE Figure 2 NOTE Ensure that ac...

Page 5: ...uit breaker rackedto TEST position check for proper operation by operating all possible means of Fig 2 Front View of Control Panel 3 8 INSTALLING ARC CHUTES See Figure I Positionarcchute I intiltedposition squarelydowninto its rear pivot guide slots and fingers avoid bumping and chipping of all moldings then lower slowly into position CAUTION CAUTION CAUTION CAUTION BE SURE RETURN CONNECTION IS CL...

Page 6: ...rity If however after the first inspection period there is no indicationof anyproblem actual operating experience can dictate the inspection cycle Regarding maintenance recommendations following fault duty reference is made to ANSIStandardC37 04to which the circuit breakers have been tested In accordance with this standard a total of 400 asymmetrical fault duty can be accumulated This is to be ten...

Page 7: ...esponding to the DISCONNECT position 3 Manually slow close the circuit breaker as described in paragraph3 7 butonlytothepoint thatthearccontacts just touch Allarcingcontactsshouldtouchwithin1 32 after all free play has been removed by pulling the bridge arm toward the open position 4 Continue the slow close operation to fully close the breaker Each pole should have approximately 7 64 to 3 16 main ...

Page 8: ...gure1 withacloth thenfollow the contour of the contacts with a fine file Do not attempt to eliminatepitting entirely Afterthis maintenance contact pressure paragraph 5 2 and millivolt drop paraqraph 5 4 should be checked NOTE Replacement of contacts is required when after repeated dressing of any contacts less than 50 of the original contact material thickness is left the tips of the stationary ar...

Page 9: ...mately 1 2 to 1 1 2 flats untilbridge motion is just free whenbridge is moved by hand On spring loaded pushrod models lift bridge against spring and then slowly release ensuring that it resets freely 5 Tightenset screw 6 innutthat wasloosened reconnect adjusting stud if disconnected and readjust contact pres sure as described in Paragraph 5 2 5 7 CLOSING AND OPENING TIMES After operation intervals...

Page 10: ...caInc formerlyNuodex Inc ABBNo 71299A 4oz tube If the grease should become contaminated or parts are replaced lubrication should be done with NO OX ID or ANDEROLgrease as applicable Useof othergreaseshave not been proven by test and are not recommended NOTES 1 Do not use NO OX ID grease on any main and moving contact surfaces 2 It is recommended that the primary disconnects be maintainedby renewin...

Page 11: ...s not Racked into Test or Connected Position Turn operating crank clockwise until lever is locked into the desired position Nominal Control Voltage Spring Charging Motor Trip Lockout Close Under Voltage N E C Fuse Coil Coil Coil Latch Check Switch not Making When Supplied Adjust per Section 5 9 24 Vdc 48 V dc 125 Vdc 250 Vdc 115 Vdc 230 Vdc 0 30 22 0 22 0 0 9 30 10 7 0 15 25 0 10 7 0 5 30 Auxiliar...

Page 12: ...ockout relay coil Y is to prevent pumping of the closing mechanism when closing against a faulted circuit 7 Afterthebreakerhasclosedandwhentheclosingcontrol switchisreleasedby the operator the lockout relay coil Y remains de energized due to the auxiliary switch b con tact in the closing circuit being open 8 The circuit breaker can be tripped by operation of a remote trip switch which energized th...

Page 13: ... assemblies and items recmmended in these bulletins are predicated on infre quent replacement of partsbasedonaccumulatedtest and operatingexperience Totalassemblies are recommended forfast replacement whennecessary to returnthebreaker to service as quickly as possible Then certain replaced assemblies such asthe stationary upper terminals canbe returned to the factory for nominal reconditioning The...

Page 14: ...IB 6 2 1 7D Page 14 A mi MVP ASEA BROWNBOVERI SERVICE NOTES Courtesy of NationalSwitchgear com ...

Page 15: ... IB 6 2 1 7D Page 15 Jinn MlflP ASEA BROWN BOVERI SERVICE NOTES Courtesy of NationalSwitchgear com ...

Page 16: ...OVERI ASEA BROWN BOVERI INC ABB Power Distribution Inc Circuit Breaker Division P O Box F 7 Florence South Carolina 29501 Printed in U S A 1M 0391 Phone 803 665 4144 Telecopier 803 664 0520 Courtesy of NationalSwitchgear com ...

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