Larsen & Toubro

Supervisor / Jr. Engineer - Generator testing & HSB

Posted: 2 hours ago

Job Description

Should have knowledge of maintenance, trouble shooting & operation of auxiliaries for generator (upto 1000 MW) like single & double flow seal oil system, stator coil cooling water, lubrication oil system, jacking oil system, H2 & CO2 handling.Should have knowledge of electrical testing on stator & rotor manufacturing :Generator stator:Insulation resistance measurementii.DC winding resistanceiii.Tan delta & capacitance measurementiv.Partial discharge measurementNFT of overhang windingvi.Core loop flux testvii.ELCIDGenerator rotor :Insulation resistance measurementii.DC winding resistanceiii.Impedance measurementiv.RSOShould have knowledge of generator routine & type test during dynamic condition:Temperature rise – heat runOpen circuit testShort circuit testSudden short circuit testNegative sequence & Positive sequence testTHF & Voltage waveform deviationShould have knowledge of IEC, ISO standards for electrical testing of generator ( up to 1000 MW) & High-speed balancing of turbine / generator rotorsShould have knowledge of Low speed & high-speed balancing of turbine & generator rotorsShould have knowledge of assembly of rotors in high-speed balancing tunnelAble to visually check rotorAble to take TOP / Side clearance of bearing & rotor journalAble to perform alignment of rotor with motor shaftAble to trouble shoot issues pertaining in assembly processCan study P&ID, electrical drawings for maintenance & operation parametersHave a positive approach for trouble shooting of electrical, mechanical & instrumentation issues in generator testing, high speed balancing &Able to handle unionized workmen in shift, ready to work in shiftsAdditional Vibration category – 2 certification is preferableAble to handle customer at site for overhauling activities like in-situ balancing, electrical test on generator stator & rotor, calibration of instruments & operation/maintenance of auxiliaries, ready to travel at different sitesShould have knowledge of basic instrumentations/transducers like pressure transmitter, pressure gauge, RTD, Thermocouple etc.Able to operate electrical testing kits likeInsulation testerHigh voltage test set-upMicro-ohm meterPD kitTan- delta kitFunction generator1- phase variac

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