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  1. golubgolub

    ref high impedance testing

    thx.... ok,but it is connected to current input of the Protection relay.... So that means that I cannot just inject voltage on current inputs. This is for HZPDIF function in ABB relay. So I need to have current which will flow in to the relay
  2. golubgolub

    ref high impedance testing

    Hi All, I would like to know what is test procedure for testing High impedance REF Protection. How to perform ''secondary'' testing? Should I inject voltage on stabilizing resitor and increised it until relay operate? Or I should inject current in secondary side and increised it until relay...
  3. golubgolub

    Generator minimum voltage

    What is the minimum voltage that generator can provide us, and on what does it depents on. For example if the generator is 195MVA. Is ti possible to generate voltage less than 1kV?

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