Coordination and Short Circuit Study
Coordination and Short Circuit Study
(OP)
Utility has provided us with maximum and minimum 3P and L-G short circuit values. Which one of the values id recommended to be used for fuse, Circuit breaker Short circuit rating as well as short circuit study and coordination. This will determine which values to be used in SKM as utility data.
I have seen that maximum available short circuits are used, however I always thought minimum short circuit is the one.
I have seen that maximum available short circuits are used, however I always thought minimum short circuit is the one.






RE: Coordination and Short Circuit Study
If you are doing arc-flash analyses as well as coordination, the minimum fault levels are important because interrupting times are slower and arc-flash energy can be higher for lower fault currents.
RE: Coordination and Short Circuit Study