Generator Repair | Failure investigation | Condition Assessment | Motor Rewinding | Major Outage | Inspection and Testing
ELCID test on new construction hydro Generator and turbo generator 400 MW Our EL CID facility is provided with 4 excitation cables, normally used for Hydro Generators, for the large turbo generators is require very long excitation cables, 40 meters or more depending of the stator length. For this unit we used 3 extension excitation …
GENERATOR FAILURE INVESTIGATION Written by : Siswanto, Power Generation Engineer Insulation failure on the generator winding can caused by many factors, this paper provides examples of generator failure on generator 54 MVA, 13.8kV due to the stator winding insulation aging problems, caused by semiconductive layer protection problems, large coil gap resulting endwinding and slot discharge. …
CONDITION ASSESSMENT METHODOLOGY Written by : Siswanto, Power Generation Engineer Failure of insulation is considered to be major factor in electrical rotating machine. Aging of insulation generally follows a chemical rate degradation curve and in addition is severely affected by the number of stops and starts, the frequency of stops and starts as well …
ELECTRICAL ROTATING HV MACHINE HIGHLIGHT Written by : Siswanto, Power Generation Engineer 1. INTRODUCTION Wound stator / rotor windings operating in utility and industrial plants have failed when exposed to the fast rise-time voltage surges coming from unbalance load, drives, breaker, lightning impulse, etc. Machine failure is due to a combination of bad luck in …