what is Reverse Power Relay?

[Fahad Bhatti]

hi buddies,

I Need to know about Reverse Power Relays?
Anybody having any idea?

[AHAD-KHAN]

A reverse power relay using semiconductor components is provided to sense the phase relationship between current and voltage in an electric circuit and to trip a circuit breaker controlling that circuit in the event of reverse power conditions.... The reverse power relay comprises an amplifier and current multivibrator circuit, an amplifier and potential multivibrator circuit, a
comparator circuit, and a timing and output circuit. Current and voltage condition signals from the two multivibrator circuit are compared in the comparator circuit and, if a reverse power condition exists, an output signal from the timing and output circuit operates a trip coil which trips the circuit breaker. The reverse power relay is powered from the same power supply.Are you making a project or in which circuit do you want to use reverse power relay???

[Fahad Bhatti]

thx Ahad, yes I m in a Project of Synchronizing a Power Plant with main line of wapda... If from Pakistan you must have an idea about city Taxila, this project is been taken out there,
Ahad can you help me out with some detailed data about Reverse Power Relays? I need to know as much as possible about these Relays..
Thanx
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