The Reliability Evaluation of Measuring System Designed to Calibrate Direct Current Watt-Hour Meter
P. Zazula · 2013
The paper presents a method for evaluating the accuracy of indications of the direct current Watt-hour meters in a designed and constructed measuring system. Such measuring system is composed of two multi-function calibrators, and a specialised high-voltage attachment dedicated for this system, which makes it possible to generate direct voltages in a required range up to 4 kV with a suitably high precision. The authors described in detail particular elements of the measuring system together with the results of its calibration. The measurement results were completed with a presentation of uncertainty budgets, developed for all quantities measured.