some time we open engine breaker 8.0 MW load but plant not
trip. and another time engine open 4.0 MW load engine trip
why? individually engine breaker open & individually
emergency stop why difference?
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Answer Posted / Jay Prakash Singh
The behavior you described could be due to the settings and trip curves of the electrical system, which are designed to protect it from overloads and faults. Here's an explanation for each scenario:
1. Engine Breaker 8.0 MW load does not trip: In this case, the electrical system may have been operating within its designed capacity or the breaker might be set with a higher trip setting for that specific load level. The system could handle the 8.0 MW load without tripping due to these factors.
2. Engine Breaker 4.0 MW load trips: On the other hand, when the load is reduced to 4.0 MW, it might fall below a critical point in the trip curve or the breaker's sensitivity may be higher for lower loads. This could cause the breaker to trip even though the overall system capacity is still within its limits.
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