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  1. CurrentKills

    Hydro Generator field contactor & Discharge Resistor still necessary?

    Thanks David. I was just talking to Basler, and they confirmed that the series field should be bypassed/removed, and I agree that the shunt field should be disconnected from the armature & series field. In case of fault (resulting in trip), the exciter shunt field will collapse through the DECS...
  2. CurrentKills

    Hydro Generator field contactor & Discharge Resistor still necessary?

    Thanks Mike. I'm not familiar with the "inverting style excitation system" you mention. Also not sure of the motivations behind the 250N selection, but another key difference is 20A output vs. 15A in the 250 (non-N), which I'm not sure is necessary to my application either. The rotating exciter...
  3. CurrentKills

    Hydro Generator field contactor & Discharge Resistor still necessary?

    I'm rehabilitating a 2MW hydro with rotating DC generator (compound wound). Replacing existing AVR with Basler DECS 250N which will energize the exciter shunt field. Given the DECS has a crowbar circuit and six SCR full wave output stage, Basler application engineer has told me that the...

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