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  1. alikhan007

    500kV GIS breaker Open/close Time Testing

    crshears So what should be the acceptable limit of closing time?
  2. alikhan007

    500kV GIS breaker Open/close Time Testing

    Yes, the open (trip) time is less than 20ms. Thats qualified as per our acceptance criteria. But The close time is a bit higher than the range. Any IEC standard mentioning GIS breakers time testing range?
  3. alikhan007

    500kV GIS breaker Open/close Time Testing

    Guys, need help regarding open close time testing of 500kv GIS breaker. The close time of all three phases were about 66.7,67.2,67.3ms. But as per vendor specifications. The value of closing time should be around 48~60ms. I have contacted vendor in this regard but now he is telling that value...

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