Eaton Cooper Power Series Installation, Instruction And Service Manual

Also see for COOPER POWER SERIES: Installation and operation instructions Installation instructions Installation instructions Installation and operation instructions Operation instructions

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Eaton Cooper Power Series Installation, Instruction And Service Manual Manual pdf 9 page image

Siemens® Corporation voltage regulatorapplicationThe replacement procedure may be performed in the shopor the field. The regulator must be bypassed or removedfrom service prior to installing the CRA kit. Always bypassthe regulator when installing the CRA kit in the field toprevent opening the CT circuit while the regulator is underload.ote:N The control cable may be an actual cable or a flexibleconduit. For these instructions, it will be referred toas "control cable".1. Bypass the regulator or remove it from service.2. Open the existing control box and swing out the controlfront panel. Remove the front panel by disconnectingthe jack plug and lifting the control off of its hinges.3. If the incoming control cable leads are not marked orcolor-coded, place appropriate wire markers on thecontrol cable leads and mark the leads for referencelater.4. Disconnect the incoming control cable leads from thefemale jack plug located on the back of the control box.If the tap-changer motor capacitor is located in thecontrol box, disconnect the leads from the capacitorand remove the capacitor for reinstallation in the CRAcontrol box.5. Remove the incoming control cable-retaining nut andremove the cable from the control box.If the regulator is fitted with a non-flexible conduithousing the control leads, it will be necessary to modifyor replace this conduit with a flexible conduit to allowinterface to the CRA control box.6. Remove the cable compression connector (cable grip)from the existing control box.7. Remove the nameplate from the old control boxassembly and retain, with the hardware.8. With an adjustable wrench (or appropriate socketwrench), remove and retain the bolts holding thecontrol box on the regulator.9. Remove the existing control box assembly from theregulator.10. Place the supplied universal bracket over the mountingbosses of the regulator and secure with bolts retainedin Step 8.11. Place the CRA control box on the universal bracket andsecure it to the regulator with bolts, washers, lock-washers, and nuts provided.12. Attach the nameplate to the front of the CRA controlbox with the hardware retained in Step 7.13. Ground the control cabinet via the ground boss locatedon the side of the cabinet.14. Examine the control cable. Allow approximately 12" oflead length to protrude past the end of the conduit nut.This will facilitate connection to the top terminal stripand knife switches located in the CRA control box.15. Remove the cable grip nut and rubber cable grommetfrom the cable entrance of the new control box.16. Place the cable grip nut over the existing control cable.Select one of the two supplied cable grommets thatbest fits the existing cable; place the grommet over thecontrol cable.17. If the motor capacitor was located in the old controlbox, do not cut the terminals from the ends of thecapacitor wires.Cut all other terminals from the ends of the cableconductors.18. Strip the insulation back approximately 5/16 of an inchon each lead to be connected in the new control box.19. Insert the control cable into the control-box cable gripconnector, seat the rubber grommet, and tighten thecable grip nut.20. V6 connections and source-side PT input:A. If there is no source-side PT input, or if there is asource-side PT input, but the source-side voltage isto be calculated by the control, the control box hasbeen pre-configured for this type of operation; nofurther action is required.WARNINGHazardous Voltage. The control box must be solidlyearth grounded. Failure to comply can result in severepersonal injury and equipment damage. VR-T216.0DANGERExplosion Hazard. Voltage regulators are subject tohigh circulating current during bypass switching.Refer to Service Information MN225003EN CL-7Voltage Regulator Control Installation, Operation, andMaintenance Instructions for information on the CRAControl, and refer to the instruction manual supplied bythe voltage regulator manufacturer for specific safetyprocedures for bypass switching. Failure to comply willresult in severe personal injury or death. VR-T214.0DANGERFlashover Hazard. Opening the CT circuit under loadwill produce high voltages in the control box. Alwaysbypass the regulator when installing the CRA to preventopening the CT circuit while the regulator is under load.Failure to comply can result in severe personal injury ordeath. VR-T215.05CL-7 control replacement assembly installation instructions and service information MN225017EN October 2016