Eaton Cutler-Hammer VCP-W Instructions For Installation, Operation And Maintenance

Also see for 380 VCP-W 21: Instructions for installation, operation and maintenance

I.B. 3A74792H04Page 12Effective 7/97SECTION 4: INITIAL INSPECTION ANDINSTALLATION4-1 INTRODUCTIONBEFORE PLACING THE CIRCUIT BREAKER IN SER-VICE, CAREFULLY FOLLOW THE INSTALLATIONPROCEDURE GIVEN BELOW. NOT FOLLOWINGTHE PROCEDURE CAN FAIL TO UNCOVER SHIP-PING DAMAGE THAT MAY RESULT IN INCORRECTCIRCUIT BREAKER OPERATION LEADING TODEATH, BODILY INJURY, AND EQUIPMENT DAM-AGE.Before attempting to put a circuit breaker in service, itshould be carefully examined and operated manuallyand electrically. In addition, carefully examine the break-er for loose or obviously damaged parts. The followinginformation is a guide for performing recommendedchecks and tests.4-2 MANUAL OPERATION CHECKRefer to Figures 3-6 and 4-1 and then proceed by plac-ing the maintenance tool into the manual charge socketopening. Charge the closing springs with about 38 upand down strokes of the handle. When charging is com-plete the closing crank goes over center with an audibleCLICK and the springs Charged/Discharged indicatorshows “Charged.”If the springs are to be charged on a closed circuitbreaker, no click is heard at the end of chargingoperation. Discontinue charging and remove themaintenance tool as soon as “Charged” flag is fullyvisible. Continued attempts to charge further mayresult in damage to the mechanism.Remove the maintenance tool. Close and trip the circuitbreaker. Repeat several times.4-3 VACUUM INTERRUPTER INTEGRITYUsing a dry, lint free cloth or paper towel, clean all theaccessible insulating surfaces of the pole units. Conducta vacuum interrupter integrity check as described inSection 6.4-4 INSULATIONCheck the circuit breaker’s primary and secondary insu-lation as described in Section 6.4-5 CONTACT EROSION AND WIPEManually charge the closing springs and close the cir-cuit breaker. Check contact erosion and wipe asdescribed in Section 6.4-6 PRIMARY CIRCUIT RESISTANCECheck the primary circuit resistance as described inSection 6. The resistance should not exceed the valuesspecified. Record the values obtained for future refer-ence.4-7 NAMEPLATECompare the circuit breaker nameplate information withswitchgear drawings for compatibility.Figure 4-1 Type VCP-W Circuit Breaker ManualCharging Handle in Use! WARNINGNOTICE