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Abstract

Detailed results of intercomparison measurements of electrical power at 120 V, 5 A, power factors 1, 0.5, and 0 inductive and capacitive performed at 53 Hz are reported. Seven calibration laboratories within six countries of the EC participated in the measurements. A thermal wattmeter and a power comparator using a time division type multiplier have been used as transfer instruments and circulated between the laboratories. The calibration methods used at the different laboratories are described in detail. The spread of the results is in good agreement with the uncertainty limits stated by the different laboratories. One laboratory however had results outside this range of agreement and subsequently adopted a new method of calibration based on multijunction thermal convector. Two other laboratories had also difficulties at zero power load factor.

Additional information

Authors: BERGEEST R PHYSIKALISCH-TECHNISCHE BUNDESANSTALT, BRAUNSCHWEIG (GERMANY), PHYSIKALISCH-TECHNISCHE BUNDESANSTALT, BRAUNSCHWEIG (GERMANY)
Bibliographic Reference: EUR 10813 EN (1986) MF, 115 P., BFR 300 BLOW-UP COPY BFR 575, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989125041200 / Last updated on: 1987-07-01
Category: PUBLICATION
Available languages: en