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  1. registigger

    Setting of earth leakage protection relay

    What would be an acceptable setting for an earth leakage protection relay supervising a 1200KVA transformer on the 480V secondary (about 1440A line current). This relay used to be set at 2.5A and had not tripped for years. Recently, high power AC drives have been added to the feeder using most...
  2. registigger

    SKiiP IGBT module failures

    We have been experiencing a high rate of failures of Semikron's SKiiP IGBT module. Anybody had the same experience? marcot@imalog.com

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