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Originally Posted by Gdeaver
Check the IFI specs. The 883 was about 2k output feq. The output feq of the 884 is low about 120. This was done to give control below 10%. Using a UEI digital clamp on amp meter VS an old Amprobe analog clamp on I'm getting less than 10% variation in current readings.
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I thought is was the other way around. (I have gotten this goofed up before though.) What may be confusing is that the input PWM is 120 Hz as is the internal loop reading the input.
The difference between the probes is pretty good. Still if you want to have accurate current data you must use another method. i.e. if you want to correlate current and breaker heating.
After a diligent search of the archives, I did find this...
http://web.archive.org/web/200410222...3datasheet.pdf
It lists the 883 at 2kHz. However this sheet compares the 883 and 884 as having different deadband characteristics and the 884 being programmable as to the deadband.
http://web.archive.org/web/200208052...Victor_884.htm