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Answer Posted / c r satpathy
The trip circuit supervision relay is used for supervising important control circuits such as circuit-breaker
and disconnector control circuits and signalling circuits in power electrical installations. Generally one supervision relay is needed per circuit to be supervised. If several branches of a circuit are to be supervised, the required
number of relays can be connected to the same control circuit. Continuous monitoring of circuit-breaker trip circuits and other essential control circuits. Preset operate time preventing unwanted alarm signals at circuit-breaker operation
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