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  1. freelancer

    automatic load dropping (ALD) scheme

    dafo74, I have worked with ABB's RXFK 2H relay (which is a static microprocessor based frequency relay) in which underfrequency and df/dt are combined in one module.
  2. freelancer

    Oil in Transformer Conservator

    enggines The fill level in the conservator should correspond to the temperature shown by the oil temperature indicator of the transformer.
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