Search results for query: *

I found this article on the burden of test switches indicating the resistance/burden of the FT-1 test switches should be considered. See page 17 of the artictle. If this is true, I don't know why the manufacturers don't put in this information into the specs on their test switches. It was by...

Does anyone have any test data for the burden of a FT-1 current test switch? I am trying to do a burden calculation for a CT circuit with 2 relays and 3 FT-1 test switches in the circuit. I am going to use .1 ohm per test switch and that to include the termination contact resistance but don't...

1. Does anyone have some simple formulas for determining the amount of current that will flow right at generator breaker closeing based on the voltage difference between a generator and the bus. Assume the phase angle difference is 0 degrees. Assume an infinite bus. I am thinking it is Delta...

I would set the voltage difference at least below the following: That when the delta volts rms, between the incoming bus and the running bus divided by the subtransient reactance of the generator, does not exceed the generator nameplate rating in amps.

I need some help here. I am looking to interview some mechanical engineers for an experienced level position working with rotating equipment. This would be motors, pumps, hydraulic turbines. I am an electrical engineer. I was looking for some good interview questions about standards or...

I am writing a report about operating temperatures and expected lifespan of a Class F motor. I was looking for a good copy I can insert in my report of a graph that I have seen of winding temperature and insulation life. Anybody know where a insulation life versus winding temperature graph...

Can someone tell me what a typical amount, percent of nameplate, that a 3 phase 480VAC, induction(Squirrel cage) motor might be? I have a 20hp motor that when disconnected from the load, draws about 20amps just running. The amps are measured at the leads to the motor with a clip-on ammeter...