Electronic Design Software

An electronic meter designed for 50Hz is used where supply voltage is 60 Hz,will the meter show low reading?

In electromechanical meters if the meter designed for 50hz is used for supply of 60 hz ,the recording may go down.Will it be same in the case of electronic meters also?

Public Comments

1. Probably not, but it really depends on the meter and what it is measuring, and what it is calibrated for. There are thousands of different kind of meters. .
2. Because frequency (Hz) can vary your meter would peg out if used on a 60 Hz circuit. However, voltage, like frequency can vary depending on how and where you get your power. Most meters have a tolerance of +/- 15% so I think your meter may be capable of operating correctly. Voltage fluctuation is another issue in itself.
3. we can't surely say dat it only goes low on using it to a 60 hz supply until we know wat kind of electronic meter it is. if it can control the higher frequency or changes in it we can have an accurate reading.
4. In electronic meters, a correctly designed meter does a vector multiplication of the instantaneous voltage and current and integrates the product. In this way, factors like phase and frequency are automatically taken care of. In theory there should be no problem whether it is 50 Hz or 60 Hz. In practice, the bandwidth of the circuit can affect. However, with today's components, the bandwidth will be so much greater than any significant harmonics of 60 hz that the contribution to error will be well below the normal meter's error specification. The actual design can use analog multipliers and then accumulate the product or convert instantaneous voltage and current samples to digital, multiply each pair of samples and keep summing the product. The latter is the prefered method as the analog multiplier is more of a problem to keep calibrated with variations in environment, specially ambient temperature.