Overload for 1hr, how to?
Overload for 1hr, how to?
(OP)
Hi,
I was reading that "Prime" rated generators can be overloaded for 1 hour every 12 hours. If I am mistaken, then assume it is the "Continuous" rating that can be overloaded ...
My question is: how can the generator be overloaded for 1 hour without the circuit breaker tripping?
I'm trying to figure the shape of the protection curve of the trip unit:
1. Infinite time on rated curremt
2. 1 hour on 1.1 x In (otherwise something "bad" will happen)
3. short circuit protection
I can't figure out point #2, if you can provide me with a hint much appreciated.
I was reading that "Prime" rated generators can be overloaded for 1 hour every 12 hours. If I am mistaken, then assume it is the "Continuous" rating that can be overloaded ...
My question is: how can the generator be overloaded for 1 hour without the circuit breaker tripping?
I'm trying to figure the shape of the protection curve of the trip unit:
1. Infinite time on rated curremt
2. 1 hour on 1.1 x In (otherwise something "bad" will happen)
3. short circuit protection
I can't figure out point #2, if you can provide me with a hint much appreciated.






RE: Overload for 1hr, how to?
RE: Overload for 1hr, how to?
But, if the generator is rated for 110% overload, the manufacturer will select the appropriate breaker. (Don't assume that all Prime sets can be overloaded. I have not seen continuous sets rated for overloading.
Bill
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"Why not the best?"
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