Description: Re Insulation of two numbers rotor pole and assembling the pole shoe with the spare coil of 130MW Ist stage generator at Idukki Underground power House Moolamattom Name of Work IHEP Re Insulation of two numbers rotor pole and assembling the pole shoe with the spare coil of 130MW Ist stage generator at Idukki Underground power House Moolamattom
Details: Electrical Items : Charges towards re-insulation of rotor pole by removing the old insulation from the coils, checking the inter- turn joints for any cracks and rectifying the same, providing new turn insulation out of class ‘H’ (180 °C) epoxy coated NOMEX paper, pressing and curing the coil at 150C under pressure, providing new pole body insulation out of F class EPOXY glass laminates, placing the coils on the rotor pole body, providing new sole plate to keep the coil locked under pressure, conducting all the tests prescribed in IS, painting the pole body, coil assembly with moisture repellent varnish, rectification of slippage of inter – turn insulation by providing mild steel collar at the back of the field coil and welding it to the pole body by keeping under pressure and conducting the following test at our works.1.Measurement of insulation resistance2.Measurement of winding resistance3.AC High Voltage Test4.Surge Comparison Test 5.Measurement of AC impedance and power Fac
Sector: Power Sector