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Re: AC current and voltmeters
Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
Pole xmfrs have 99.9% efficiency. They provide power for our homes
to run clocks and computers. This requires an accurate 60 Hertz
sinewave which the pig provides. It reads accurate at least in all
the pigs I have ever tested.
Dr. Resonance
----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, April 18, 2006 10:21 PM
Subject: Re: AC current and voltmeters
Original poster: "Gerry Reynolds" <gerryreynolds@xxxxxxxxxxxxx>
Hi DC,
Sounds like you monitor the LV side of the PIG and calibrate the
meter in terms of its HV output?? If this is correct, how does it
correlate with actual scope measurements of the HV side, given that
the meter scale reads RMS and the waveform is not a true sinewave .
Gerry R
Original poster: "D.C. Cox" <resonance@xxxxxxxxxx>
I misprinted the data on the Electronic Industries contact. We use
Yokogawa meters and not Modutec meters. Better pricing and they
work terrific!! The "Industrial Look" model in 3 1/2 inch size is
the one we use. Direct series ammeters up to 50 AC Amps in
different ranges, current xmfr meters above that value, 0-300 VAC
meters for voltage. We have these factory "faceplate recalibrated"
to read direct with our 14.4 kV pole xmfrs. Our scale is 0-20 AC
kiloVolts which gives the correct kV reading of 14.4 kV with a full
220 Volt input. I use a lot of the 0-15 AC Amps and 50 AC Amps
meters. Price range around $55-$60 but they look great!!