PT .PEMBANGKITAN JAWA BALI UB-HAR GRESIK

LIFE ASSESMENT OF SIEMENS 251.75 MVA TURBINE GENERATOR UNIT ST#2 PLTGU GRESIK POWER PLANT

GENERAL SCOPE OF WORK

1. Partial Discharge (PD) test before shut down
2. Electrical Test Stator and Rotor Winding included :
-  Insulation resistance (Megger) and PI test
-  Resistance test and AC Impedance test Main Rotor 
-  Tan Delta angel test winding 
-  AC Leakage current test stator winding
3. Mechanical Inspection and Test
-  Visual inspection stator wedges with hammering 
-  Visual inspection stator core and Rotor 
-  NDT (Non Destructive Test) of Rotr wedges, shaft Journals, bearings, fan blades, coupling, and bolts
4. Partial discharge test after overhaul.