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what is the difference between the 94 lockout relay and 86
lock out relay. I have noticed that the 94 lockout relay is
activated when the distance realy is activated and 86 is
activated when the 87T differential is activated. but why
can't the same lockouts be used for both the protection
schemes
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Answer Posted / yaldilip
94 is self reset relay trip relay
86 is lockout relay having two coils trip coil and reset coil once the trip come the trip coil will energize and plug will down once the reset coil energize and the fault will clear tan reset coil will energize and the trip coil will drop.
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