Junior Member
Posted November 3, 2019
Given a circuit breaker schematic what happens after the 51 element trips?
A) Trip coil energizes and opens the breaker
B) 86-1 contacts close
C) 86-1 and 86-2 relay operates
D) 86-1 relay operates
E) 86-2 relay operates
its hard to read this diagram can anyone help?
It is really hard to see but the two 50/51 elements in the SR relay operate and next will operate the 86-1 and the 86-2 lock out relays. The two lock out relays will then energize the trip coil (TC). So I think the answer should be C.
Originally Posted by mbaxter1
Given a circuit breaker schematic what happens after the 51 element trips?
A) Trip coil energizes and opens the breaker
B) 86-1 contacts close
C) 86-1 and 86-2 relay operates
D) 86-1 relay operates
E) 86-2 relay operates
its hard to read this diagram can anyone help?
Warren Garber
Have a great day!
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