Eaton 380 VCP-Wind Instructions For The Use, Operation And Maintenance

Contents

I.B. 70A2580H02 Page 11Effective November 2012SECTION 4: INITIAL INSPECTION ANDINSTALLATION4-1 INTRODUCTIONWARNINGBEFORE PLACING THE CIRCUIT BREAKER INSERVICE, CAREFULLY FOLLOW THEINSTALLATION PROCEDURE GIVEN BELOW. NOTFOLLOWING THE PROCEDURE CAN FAIL TOUNCOVER SHIPPING DAMAGE THAT MAY RESULTIN INCORRECT CIRCUIT BREAKER OPERATIONLEADING TO DEATH, BODILY INJURY, ANDEQUIPMENT DAMAGE.Before attempting to place a circuit breaker in service, itshould be carefully examined and operated manually andelectrically. In addition, carefully examine the breaker forloose or obviously damaged parts. The followinginformation is a guide for performing recommendedchecks and tests.4-2 MANUAL OPERATION CHECKRefer to Figures 3-4 and 4-1 and then proceed by placingthe maintenance tool into the manual charge socketopening. Charge the closing springs with about 36 upand down strokes of the handle. When charging iscomplete the closing crank goes over center with anaudible CLICK and the springs Charged/Dischargedindicator shows “Charged.”NOTICEIf 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. Conduct avacuum interrupter integrity check as described inSection 6-4.4-4 INSULATIONCheck the circuit breaker’s primary and secondaryinsulation as described in Section 6-6.4-5 CONTACT EROSION AND WIPEEaton vacuum interrupters used on the 38kV VCP-Wind are designed to achieve very low arc voltagesand short arc times, resulting in very low arcenergy. Contact wear is therefore negligible.4-6 PRIMARY CIRCUIT RESISTANCECheck the primary circuit resistance as described inSection 6-7. The resistance should not exceed thevalues specified. Record the values obtained forfuture reference.4-7 NAMEPLATECompare the circuit breaker nameplate informationwith switchgear drawings for compatibility.4-8 ELECTRICAL OPERATION CHECKAfter having completed all previous checks and tests,the circuit breaker is ready to be operated electrically.It is preferred that this check be made with the circuitbreaker in the TEST position or by using a testjumper, if the circuit breaker is outside the cellstructure.Figure 4-1 Type VCP-Wind Circuit Breaker ManualCharging Handle in Use