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I'd like to look into whole-house surge protection. Are there some types of systems I should stay away from? I'd appreciate and tips or advice.

With the Fluke I'm measuring the 480 VAC input. The DC output is constant and the power supply has DC Volts and DC Amps gauges built in. So the DC output wattage is easy to calculate. --Scott

Yes.

It's connected to a power supply about the size of a whole server rack. The power supply converts 480 VAC to 15 VDC 800 amps. I measured 3 different power supplies and it worked fine on the first. I don't think the other two are so different the meter would have a problem. I don't have the...

I rented a Fluke 435 to measure the power consumption of some big power supplies we have (Input: 480VAC, 60 Amps). I logged the data on 3 different models of power supplies. On one of them the power factor was 0.71, but on the other two the results are meaningless - the power factor was around...

Thanks for finding this article. I don't know if our power supplies behave the same way as a VFD or UPS, I'm guessing they probably do. I'll check with the guy who builds them. Do you know if I'd be able to use the Fluke Meter to verify if the P/S is actually pulling power from the narrow...

Fluke softrare does have a power section. Below are links to three screenshots: Active Power, Reactive Power, Apparent Power http://files.engineering.com/getfile.aspx?folder=d0c26067-504a-49e0-8427-0e4f195cb034&file=Reactive_Power.jpg...

I'm using a Fluke 435 Power Quality Analyzer; I think this should record all the data I need. Why will the power factor be distorted?

I am trying to calculate the efficiency of a 3-phase 480V power supply that outputs 10.5 volts DC at 840 amps. The purpose is to see how much we can save in electricity by using a newer more efficient power supply. We are not charged for power factor by our electric utility. I've got a Fluke...