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  1. VOLTZNAMPZ

    Heaters for 10hp motor keep tripping

    It's the starter relay for sure. With the load uncoupled I got readins of 0.1a/0.3a/0.1a on all 3 phases. That's normal but, the starter still tripped.
  2. VOLTZNAMPZ

    Heaters for 10hp motor keep tripping

    The starter relay for a 3 phase 230v/23.4FLA /10 hp motor continues to trip.The heaters are type W61.The starter relay is a Allen-Bradley model 509 COA. The heaters trip while under load and with the load uncoupled. What could bring about this condition ?
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