用感应分流器导出工频小电流比例量值  

Principle and Realization of Deriving Standard Current Ratios of Miniature Secondary Current

作　　者：何小兵[1] 王乐仁[2] 金波 金谦 王维[1] 

机构地区：[1]中国计量科学研究院,北京100013 [2]中国电力科学研究院,武汉430047 [3]湖北天门电工仪器仪表研究所,湖北天门431700

出　　处：《电测与仪表》2013年第S1期102-107,共6页Electrical Measurement & Instrumentation

摘　　要：机械行业标准JB/T 10665规定微型电流互感器的误差按国家计量检定规程JJG313《测量用电流互感器》检定,采用直接差值法测量误差,但目前我国工频电流比例标准量值只覆盖0.01A^60kA/1A、5A,还没有适用于微型电流互感器的国家标准量值。本文介绍了基于感应分流器导出工频小电流比例量值的原理和方法,可以覆盖5A/500mA^5A/1mA量程范围,建立0.01级微型电流互感器检定标准装置。In the Machinery Industry Standard JB/T 10665 , it is required that errors of a miniature current transformer must be tested according to verification regulation JJG313 in comparison method. Since the national current ratio standards at power frequency cover only 0. 01A ~ 60kA / 1A, 5A, they are not suitable for miniature current trans-formers. In this paper a principle of reference current method based on inductive current divider to obtaining miniature current ratio is described. With facilities above a Verification Device of miniature current transformers for 5A / 500mA~ 5 A / 1 mA can be set up in the accuracy of 0 . 01%.

关 键 词：微型电流互感器 感应分流器 工频小电流 电流比例溯源 

分 类 号：TM933.1[电气工程—电力电子与电力传动]