Textbook Problem

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Under what conditions will the out-of-step relay trip out the control circuit?

To determine

State the conditions at which the out-of-step relay trips the control circuit.

Explanation of Solution

Out-of-step relay:

An out-of-step relay is a type of dash-pot timer. It is similar to the time lag magnetic overload relay, which is operated by sensing the magnitude of magnetic field produced by motor current.

Conditions at which relay trips the control circuit:

The out-of-step relay will trip out the control circuit when it experiences the following three conditions...