• 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 measurement ii.
DC winding resistance iii.
Tan delta & capacitance measurement iv.
Partial discharge measurement
• NFT of overhang winding vi.
Core loop flux test vii.
ELCID
• Generator rotor :
• Insulation resistance measurement ii.
DC winding resistance iii.
Impedance measurement iv.
RSO
• Should have knowledge of generator routine & type test during agile condition:
• Temperature rise – heat run
• Open circuit test
• Short circuit test
• Sudden short circuit test
• Negative sequence & Positive sequence test
• THF & Voltage waveform deviation
• Should have knowledge of IEC, ISO standards for electrical testing of generator ( up to 1000 MW) & High-speed balancing of turbine / generator rotors
• Should have knowledge of Low speed & high-speed balancing of turbine & generator rotors
• Should have knowledge of assembly of rotors in high-speed balancing tunnel
• Able to visually check rotor
• Able to take TOP / Side clearance of bearing & rotor journal
• Able to perform alignment of rotor with motor shaft
• Able to trouble shoot issues pertaining in assembly process
• Can study P&ID;, electrical drawings for maintenance & operation parameters
• Have 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 shifts
• Additional Vibration category – 2 certification is preferable
• Able 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 sites
• Should have knowledge of basic instrumentations/transducers like pressure transmitter, pressure gauge, RTD, Thermocouple etc.
• Able to operate electrical testing kits like
• Insulation tester
• High voltage test set-up
• Micro-ohm meter
• PD kit
• Tan
- delta kit
• Function generator
• 1
- phase variac