A comparison of power measuring systems

• An automatic zero-power-factor standard has been designed and compared with a digital sampling wattmeter standard. The agreement of the two power measuring standards at 120 V, 5 A, and zero power factor is within a few uW/VA. The paper describes the standards, the phase errors and uncertainties of the two standards

Keyword

Power measurement

Phase measurement

Wattmeters

Measurement standards

Reactive power

Current measurement

Sampling methods

Automatic testing

Electrical resistance measurement

Shunt (electrical)

Publication and Content Type

ref (subject category)

art (subject category)