RMS values are calculated only for the time fluctuating sinusoidal voltage or current values where the magnitude of the wave alters in correspondence to time, but not employed for the calculation DC waveform values as the magnitude stays to be constant. By comparing the RMS value of the AC sine...
You need to check the datasheet of the multimeter. Not all of them are capable of measuring the RMS value of an AC signal riding on a DC level. I would not take that for granted, even if it says “true RMS measurement”. Most manufacturers will make sure to write this capability...
The present invention requires only one sample can be calculated RMS alternating current power, and avoid the interference of the current rms calculations derivation process introduced. 本发明可靠性高,实时性强,故障判定速度快. The present invention, high reliability, real-time, fast failure ...