I'm afraid this isn't quite the appropriate forum for this question. This list is for discussion and support of MATPOWER, which doesn't deal with unbalanced 3-phase systems or protection systems.

--
Ray Zimmerman
Senior Research Associate
428-B Phillips Hall, Cornell University, Ithaca, NY 14853
phone: (607) 255-9645


On Jul 1, 2008, at 3:56 AM, lub mohamed ahmad shahril wrote:

Good evening all,

I'm new here and i would like to know a few basic things regarding 3 phase protection system.

Can you please explain ( in calculation ) on how does a breaker (25 A) really works.

And does this concept works on other types of protection (eg fuse,safety relay, thrmal magnetic etc)?


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