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  1. rathgar

    Delta wye?

    L2 current was about~160a.-Haven'nt heard about any tenants w/o power Current and voltage measurements were made right at the xformer secondary.grounding point is at 8" water main about 80' away --did put a clamp on ground the following morning showed 1.5a on xformer grounding wire.----there was...
  2. rathgar

    Delta wye?

    Please assist with the following situation. I am looking to see if anyone else has ever encountered this phenomenon. Power logged secondary of a delta wye 480/208/500 KvA xformer for six hours. After about four hours, the RMS on one leg(L3) dropped to about 40 volts from 120 volts, with...

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