- We Repair: Current Transformer, power transformer,distribution transformer, Voltage Transformer
- Service Location: All Over India
For Multiple Unit Locations Maintenance to be Decided On: Size or ratingLocation in the systemCriticality of the loadService conditionsLoad cycle Maintenance Schedule: Hourly: Oil & winding temperatureLoad & voltage Daily: Oil levelDiaphragm, breather Quarterly: Bushings: cracks, dustOltc: Oil & drive mechanismRadiators: Leakages, rusting Yearly: Oil Test: Bdv, Ppm, Acidity, SludgeCable boxes, gasketsRelays, alarms, earth resistance5 Yearly (Upto 3 Mva)7-10 Yearly (Above 3 Mva)Inspect core & coilWash with clean dry oil Ensures: Normal LifeTrouble free serviceLow maintenance cost Achieved By: Regular InspectionTestingReconditioning Life of A Transformer: Transformer insulation is the life of the insulationTransformer insulation is oil and paper (cellulose)Insulation is subjected to electrical, thermal, oxidative hydrolytic and other stressesComplex ageing process starts and progresses with time for paper every 6 Deg.c Increase In temp. (over 98 Deg.c) doubles the aging in life becomes halfOil can be treated or replaced Factors Affecting Life Moisture: OxygenImpuritiesVarnishesSlackness of windings Transformer Maintenance Do s: Stock critical sparesReplace silica gel when pinkMaintain oil to correct levelChange Oltc oil periodicallyTest operation of all alarms and trips yearlyReplace cracked diaphragmsInvestigate whenever an alarm or trip is initiatedAttend to radiator rustingClean tank, radiators of oil patchesClean bushings periodicallyAttend oil leaks immediatelyUse only oil of Is: 335 And of reputed makesReplace old gasketsMaintain duplicate earth connection for body & neutralMaintain a log bookFollow oems guidelines Transformer Maintenance Do s: Bypass alarms, trips or any protection systemsTop up with used oil or oil from S/w gearAvoid maintenance shutdownOperate tap switch in energised conditionEnergise without analysing gas in buchholz relayOperate transformers with very low Ir valuesOperate In parallel when ratio, impedance vary appreciably PRICE RANGE RS 1,00,000 TO RS 20,00,000
