I stress this answer is based on gut feel, not knowledge of the specs involved. Since the test sample is not responsible for discharges, I think a test load ought to be a similar impedance to that seen when the winding insulation breaks down, if the tester can provide that current steady-state. If not, then near open-circuit load conditions apply.
However this all begs the question that if the nature of the use of the equipment is to cause arcing, what is the purpose of levying EMI requirements on it? I know there is no logical answer to that, and that the lack of such an answer doesn't matter, either. on 9/2/03 10:54 AM, [email protected] at [email protected] wrote: Hi folks, another question. I'm testing a piece of test equipment, a dielectric tester to be exact. This particular device is used in an industrial manufacturing plant to test windings on motors. The high voltage is only present for a few seconds when the test takes place. My question is, what should be the test mode. The time when the instrement is waiting for use, or the few seconds when testing? By the nature of the operation, the device can't meet the radiaated emissions limits when stressing motors because of discharges within the windings. So, is there a "get-out" clause anywhere? Cheers, Derek Walton L F Research. -- Ken Javor EMC Compliance Huntsville, Alabama 256/650-5261
