Eaton VCP-W Series Instructions For Installation/operation/maintenance/servicing

Also see for 120VCP-W25: Installation, operation and maintenance Instructions for installation, operation and maintenance

Contents

28Instruction Booklet IB131006ENEffective March 2019Instructions for installation,operation, and maintenance of typeVCP-W vacuum circuit breakersEATON www.eaton.com4. Initial inspection and installation4.1 Introductionm WARNINGBEFORE PLACING THE CIRCUIT BREAKER IN SERVICE, CAREFULLY FOLLOWTHE INSTALLATION PROCEDURE GIVEN BELOW. NOT FOLLOWING THEPROCEDURE CAN FAIL TO UNCOVER SHIPPING DAMAGE THAT MAYRESULT IN INCORRECT CIRCUIT BREAKER OPERATION LEADING TO DEATH,BODILY INJURY, AND EQUIPMENT DAMAGE.Before attempting to put a circuit breaker in service, it should becarefully examined and operated manually and electrically. In addi-tion, carefully examine the breaker for loose or obviously damagedparts. The following information is a guide for performing recom-mended checks and tests.4.2 Manual operation checkRefer to Figures 7 and 8 and then proceed by placing the main-tenance tool into the manual charge socket opening. Charge theclosing springs with about 38 up and down strokes of the handle.When charging is complete, the closing crank goes over centerwith an audible CLICK and the springs Charged/Discharged indicatorshows “Charged.”NOTICEIF THE SPRINGS ARE TO BE CHARGED ON A CLOSED CIRCUIT BREAK-ER, NO CLICK IS HEARD AT THE END OF CHARGING OPERATION.DISCONTINUE CHARGING AND REMOVE THE MAINTENANCE TOOL ASSOON AS “CHARGED” FLAG IS FULLY VISIBLE. CONTINUED ATTEMPTS TOCHARGE FURTHER MAY RESULT IN DAMAGE TO THE MECHANISM.Remove the maintenance tool. Close and trip the circuit breaker.Repeat several times.4.3 Vacuum interrupter integrityUsing a dry, lint free cloth or paper towel, clean all the accessibleinsulating surfaces of the pole units. Conduct a vacuum interrupterintegrity check as described in Section 6.4.4 InsulationCheck the circuit breaker’s primary and secondary insulation asdescribed in Section 6.4.5 Contact erosion and wipeManually charge the closing springs and close the circuit breaker.Check contact erosion and wipe as described in Section 6.4.6 Primary circuit resistanceCheck the primary circuit resistance as described in Section 6. Theresistance should not exceed the values specified. Record the valuesobtained for future reference.4.7 NameplateCompare the circuit breaker nameplate information with switchgeardrawings for compatibility.Figure 8. Type VCP-W circuit breaker manual charging handle inuse.4.8 Electrical operation checkAfter having completed all previous checks and tests, the circuitbreaker is ready to be operated electrically. It is preferred that thischeck be made with the circuit breaker in a TEST position or by usinga test cable, if the circuit breaker is outside the cell structure.m CAUTIONBEFORE INSERTING THE CIRCUIT BREAKER, EXAMINE THE INSIDE OFTHE CELL STRUCTURE FOR EXCESSIVE DIRT OR ANYTHING THAT MIGHTINTERFERE WITH THE CIRCUIT BREAKER MOVEMENT.m WARNINGEXTREME CAUTION MUST BE EXERCISED TO INSURE THAT PRIMARYCIRCUITS ARE NOT ENERGIZED WHILE CHECKS ARE PERFORMED IN THECIRCUIT BREAKER COMPARTMENT. FAILURE TO DO SO MAY RESULT INPERSONAL INJURY OR DEATH.The circuit breaker is normally tested electrically in its cell structurein the TEST position. To achieve the TEST position, first determineif the breaker cell has a BPI Pan Assembly, Figure 12 or a non-BPIPan Assembly, Figure 13. Then follow the appropriate instructions insection 4.8.1 to move/lever the circuit breaker into the TEST position.4.8.1 Circuit breaker insertion and removalm CAUTIONDO NOT USE ANY TOOL OTHER THAN THE LEVERING-IN CRANK PROVIDEDTO LEVER THE CIRCUIT BREAKER FROM TEST OR CONNECTED POSITIONS.CORRECT OPERATION OF SOME OF THE INTERLOCKS IS DEPENDENT ONUSE OF THE PROVIDED LEVERING-IN CRANK. PERSONAL INJURY OREQUIPMENT DAMAGE COULD RESULT FROM THE USE OF A TOOL OTHERTHAN THE PROPER LEVERING-IN CRANK.