Thermal electromagnetic circuit long delay over-current release

Posted on Dec 11, 2010

DK-5A, 5D, SDb control box, all with a thermal electromagnetic overcurrent release, the circuit shown in Figure 6-80. Trip has overload and short circuit instantaneous action l

Thermal electromagnetic circuit long delay over-current release
Click here to download the full size of the above Circuit.

ong delay protection. Figure, TA is quick saturation current transformer, F to shunt off the buckle coils, SBi as the sub-gate button, FR thermal relay, QF circuit breaker and auxiliary contacts.

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