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AC Power Meter | PSU | UPS evaluation | Battery Testers - Chargers | CCTV => AC Power Measurement of appliances & Technical discussion => Topic started by: Kiriakos GR on October 21, 2024, 10:30:15 AM

Title: FLUKE calibrator and Power factor testing
Post by: Kiriakos GR on October 21, 2024, 10:30:15 AM

I have never seen before FLUKE calibrator and digital power meter calibration test.
But I won this experience today.  8)

Calibrator output:  200 ACV with 1 ACA (200 Watt)   
PF …… Watt          
0.200 = 40
0.400 = 80 
0.600 = 120 
0.800 = 160
1.000 = 200W

First conclusion: 40W per step
We can now assume that PF 0.300 = 60W
And or that PF 0.100 = 20W

According above test results, I can now safely assume that:
100W load PF 1.000, PF 0.100 = 10W
10W load PF 1.000,   PF 0.100 = 1W
1W load PF 1.000,   PF 0.100 = 100mW (0.1W)

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Another interesting fact, this is about digital power meter PF accuracy specifications.
Old products has two PF accuracy specifications.

a) PF 0.500 and higher (best accuracy)
b) Lower than PF 0.500 ( 2% or worst accuracy)

In conclusion, when you see a power meter with double PF accuracy specifications, best thing to do, run away from it.  ;D

Title: Re: FLUKE calibrator and Power factor testing
Post by: Andrew-88 on October 26, 2024, 08:59:05 PM

Excellent topic  8)
Neither our professors explained such details to us, when we was studying so to become electricians.