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  1. mjeshtri

    Power transformer oil analysis

    Our AT3 -400MVA autotransformer is mounted at 400/220kV SS and it is in servise with two another autotransformers AT1(1983) and AT2 (1987) with same rated Power Two years in service we did not take any oil samples for gas analyzing, but at 24 march 2006 we did send the oil sample to the...
  2. mjeshtri

    Interlocks

    Please can somebody answer in my question. In old substations 400/220kV we had by the switch gears (disconector, earthing switch,circuit breaker) wire interlockings. We have now in implimentation 400/110kV new substation, but the contractor (I dont want to say the company name) give as the...
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