Wayne Dohnal wrote:
Even if somebody has real numbers I don't think you can put a lot of faith in them. AFIAK there's no standard definition for a surge measurement. When a motor starts, the first AC cycle generally draws the most current and it tapers down from there over a second or two. Does a surge measuring meter capture the peak at an individual cycle level? Does it sample over a certain time window and report the average? Is it reporting peak, average, or RMS values? I don't think there's much if any standardization between meters. Just as trivia I've measured the eu2000i peaking out at around 43 amps which it can sustain for only a couple of AC cycles.
very true. Also, it's hard to find an affordable clamp on AC current probe that will capture single cycle or even multiple cycle peaks. yes, they exists, I've been involved in the design of some, but the only one's I'd rely on for quantitive data would be a AC current probe for an oscilloscope so I could look at peak current each cycle. And then your looking at a few hundred $$$ for the probe plus an oscilloscope.
