A Complex Current Ratio Device for the Calibration of Current Transformer Test Sets

Metrology and Measurement Systems

Hüseyin Çaycı¹ 

关键词: current transformer test set;    ratio error;    phase displacement;    current comparator;    compensation;   

DOI  :  10.2478/v10178-011-0015-2

来源: Versita

【 摘 要 】

A practical method with high accuracy in generation and application of error values for calibration of current transformer test sets is described. A PC-controlled three-phase power source with a standard wattmeter is used for generating the nominal and error test currents while an electronically compensated current comparator is used to provide summation and subtraction of them, precisely. With this method, any ratio error and phase displacement values could be generated automatically and nominal and test currents could be grounded on the test set safely. Because of its high accurate ratio and phase error generating capability, any type of test set regardless of its operating principles could be calibrated.

【 授权许可】

Unknown