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  1. gfdona

    Series inductor with drive question

    Sorry for the delay, I was out. I talked to the new equipment manufacturer who acquired the design from the original manufacturer and did not get much out of them other than "because I said so". My real question is does this filter help me in any way other than RF mitigation. Does it...
  2. gfdona

    Series inductor with drive question

    I have a piece of equipment that essentially IR heat lamps driven by SCR's. In series with the equipment on the main incoming power feed (480v, 400 amp) is a .054mH inductor with 15 kvar delta caps on each side configured as in a pi filter. If my calculation came out right this is set up for...
  3. gfdona

    Open CT

    I recently found arcing/melting on shorting terminal block for a set of 2000:5 ct for some 480v gear.The terminal block is melting and it would not be possible to tighten the screws. Obviously, the CT's are open and I don't want to touch it. Unfortunately I have to shut the entire plant down to...

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