A current-comparator-based system for calibrating active/reactive power and energy meters

From National Research Council Canada

DOIResolve DOI: http://doi.org/10.1109/TIM.1983.4315028
AuthorSearch for: 1 ; Search for: 1 
Name affiliation
  1. National Research Council Canada. NRC Institute for National Measurement Standards
SponsorSearch for: IEEE; Search for: NBS; Search for: URSI
TypeArticle
Proceedings titleIEEE Transactions on Instrumentation and Measurement
ConferenceCPEM 82 digest : 1982 Conference on Precision Electromagnetic Measurements, June 28-July 1, 1982, Boulder, Colorado, USA
ISSN0018-9456
Volume32
IssueMarch 1
Pages147–149; # of pages: 3
SubjectAutomatic voltage control , Bridge circuits , Capacitors , Control systems , Microcomputers , Power measurement , Reactive power , Thermal factors , Voltage-controlled oscillators , Watthour meters
Abstract
A system for calibrating active/reactive power and energy meters under sinusoidal conditions using a current comparator bridge is described. Measurement can be made at any power factor from zero lag through unity to zero lead, positive or negative power, at 100 to 120 V, 1 to 5 A, and 50 or 60 Hz. The system features a digital oscillator, a thermal rms ac/dc voltage comparator, an automatically compensated capacitor for producing an accurate and stable reactive component, and a microcomputer for control and data reduction. The systematic uncertainty of the calibration system is estimated to be not more than 15 parts per million (ppm).
Publication date
LanguageEnglish
Identifier10129145
NRC number1804
4433
NPARC number5763984
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