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  • Users: moosewl
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  1. moosewl

    Ground fault

    I have 208/120V panel fed from a delta / wye transformer. Upstream of the transformer is a 480V switchgear with electronic trip breaker. The GF on this breaker is a residual sensor and is set at 140A. The transformer is about 150' from the switchgear, and the panel is 20' from the...
  2. moosewl

    ABB Circuit Shield Relay

    I have an old ABB Circuit Shield 51 relay that has gone bad. It has control voltage of 175VDC. If I find another relay, same model but with a different control voltage, does anyone know of a way to modify the relay to accept 175VDC control voltage?
  3. moosewl

    Amp reading on 2400V motor

    We want to measure the amp load on a 2400V motor. Can we use a fluke clamp on meter that is rated for 600V? If not, how would you suggest we obtain this data?
  4. moosewl

    Electric boiler and zig-zag transformer

    We are looking at putting in a new electric fired boiler. Our understanding of how the boiler works is as follows. Water is sprayed from a nozzle onto energizered plates. The nozzle is connected to neutral and the plates are energized with 13.8KV. This vaporizes the water into steam. Our...

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