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  • Users: easpe
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  1. easpe

    3 Phase Protection Relay for a 3 phase open delta circuit

    Hi Does anybody know of a 120v 3 phase protection relay for a 120V 3P open delta with a grounded b phase. The relay operates a automatic transfer backup power system sensing ciruit. There is a Time Mark 263 phase protection relay in the cutler hammer gear now but I am being told it does not...
  2. easpe

    Volt Drop across a contactor

    What is the acceptable volt drop across a electrical contactor before replacing it. Never seen a standard spec for replacement.

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