Eaton COOPER POWER Series Installation, Operation, And Maintenance Instructions And Parts Replacement Information
Also see for COOPER POWER SERIES: Installation and operation instructionsInstallation instructionsInstallation instructionsInstallation and operation instructionsOperation instructions
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Preventative maintenance instructions If any issues are found regarding the below, contact PS-WarrantyServices@Eaton.com for assistance on transformers under warranty. Additionally, thesereports must be available upon request to maintain warranty period.Transformer Exterior MaintenanceItems to Inspect Points to be Checked Remedial Action FrequencyExterior Surfaces Inspect for evidence of tampering, battered metal,gouges, etc. Check for any damage that wouldallow the entrance of wires or other metallicdevices.Any such damage should be repairedimmediately.AnnualPaint or Protective Coatings Inspect for scratches or weathering. Any such damage should be touched upimmediately.AnnualTank Leaks Check tank exterior for signs of a leak. Any such leaks should be repaired immediately. AnnualGeneral Location Check the area around the transformer for storedtools, materials, equipment or debris.Anything on or against the transformer shouldbe removed.AnnualGeneral Location Walk completely around unit and listen forabnormal noises; should be a steady hum withoutintermittent rattlingAny such abnormal noises should be reportedand investigated.AnnualPad Verify that pad has not tilted resulting in atransformer that is more than 5° from horizontal.If pad support is compromised or out of levelgreater than 5°, repair it immediately.AnnualNameplates Abnormal or unexpected fading of nameplates ordecals.Contact your Eaton representative forreplacement nameplates and decals asnecessary.AnnualUnusual Odors Smells of fluid or burning. This could be indicativeof an unseen leak under the base. Also, inspect theconcrete around the perimeter of the transformerbase for oil spotting.Any such abnormal odors should be reportedand investigated.AnnualCabinet Interior MaintenanceItems to Inspect Points to be checked Remedial Action FrequencyGauges and Controls Check for proper operation. Repair or replace damaged or defectiveequipment.AnnualEquipment Leaks Inspect drain cocks, plugs, fuse mountings, andswitches. Look for evidence of insulating liquidseepage around tank-wall gaskets, seals, etc.Repair as required. Replacement of gaskets orseals in the tank wall may require that the tankbe opened and the insulating liquid loweredto the appropriate level. For instruction onopening the tank and for draining and replacingthe insulating liquid, refer to the InsulatingLiquid Maintenance section.AnnualTank Pressure Check that pressure/vacuum gauge does notremain at zero for an extended period of time. Itis preferable that a given unit not cycle betweennegative and positive pressures on a daily basis.Commissioning pressures have been documentedin a separate paper based on the top fluidtemperature. Any observed readings lower than -2psig or greater than +7 psig indicate a conditionthat can and should be corrected.If the pressure/vacuum gauge remains at zerofor an extended period of time this may beevidence of air leakage in and out of the tank.A leak test should be performed by addingnitrogen to the airspace and observing for lossof pressure over an interval of a minimum of12 hours. If the pressure is lost, locate the leakand repair immediately.AnnualWARNINGHazardous voltage Can cause severe injury, death, ordamage to equipment De-energize transformer froma remote upstream source before opening cabinetand doing cabinet interior inspection or maintenanceCheck that all transformer terminals and bushings havezero voltage Ground transformer following industryaccepted safe grounding practices16SubStation tranSformer inStallation and partS replacement information MN202002EN JUNE 2016 |
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