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  1. Truant

    Generator and Transformer V/Hz Capability - standard curve?

    Hi Bacon, I am actually referring to PRC-019, which states "Equipment limits, types of limiters and protection functions which could be coordinated include: Volts per hertz limiter and associated protection functions. Generator and transformer volts per hertz capability" The first bullet...
  2. Truant

    Generator and Transformer V/Hz Capability - standard curve?

    Thanks Scotty, I have 1 example where I found the generator and GSU V/Hz curves on a 200MVA unit and you are right, the GSU is more sensitive than the generator. Ill try my best to find the capability curves of the GSU, but hopefully standard settings will suffice to meet compliance.
  3. Truant

    Generator and Transformer V/Hz Capability - standard curve?

    Sorry guys, not quite what I'm looking for. For larger transformers and generators 100MVA+, there is a specific capability called 'over-fluxing' which results from either an increase in voltage, a decrease in system frequency, or a combination. Obviously a decease in system frequency only...
  4. Truant

    Generator and Transformer V/Hz Capability - standard curve?

    Hello Everyone, I am working on confirming some generator and transformer protection coordination and I am having trouble finding manufacturer "V/Hz capability" curves for some of our older equipment. Do any of you know if there is an industry standard for building a standard type curve? I...

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