A calibration service for watt meters and watthour meters
John D. Ramboz · 1983
An NBS calibration service for wattmeters and watthour meters is described.The service offers measurements of percentage registration for watthour meters and percentage correction for wattmeters over a range of voltages and currents at a frequency of 60 Hz, Measurements are limited to power factors of 1.0 and 0.5, leading and lagging.The Measurement Assurance Program (MAP) for electric energy is discussed.National standards for electric energy, NBS services, special equipment and instruments, and measurement methods and procedures are described, as are error estimates and quality control.A representative Report of Calibration is included.