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Difference between Shunt Trip and UVT?

Difference between Shunt Trip and UVT?

Difference between Shunt Trip and UVT?

(OP)
What is the difference between shunt trip and UVT as both trips the GCB.

RE: Difference between Shunt Trip and UVT?

One requires a positive signal to trip the breaker, the other allows for removal of signal to trip breaker.

Shunt trip is susceptible to the trip line being disconnected and not tripping, UVT isn't.

RE: Difference between Shunt Trip and UVT?

A shunt trip can receive a trip signal from a variety of external devices (51G,32R etc).

RE: Difference between Shunt Trip and UVT?

An Under Voltage Trip must be energized before the breaker may be closed and must remain energized in order for the breaker to remain closed. If the UVT loses voltage for any reason, the breaker will trip.

Bill
--------------------
"Why not the best?"
Jimmy Carter

RE: Difference between Shunt Trip and UVT?

(OP)
It means if there generates a command of GCB close, this command will trip the GCB through shunt trip coil?

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