直流大电流比例标准自校系统的研制  

Design of Large Direct Current Proportion Standard Self-calibration System

作　　者：罗旭东[1] 何韵[1] 曹云飞 韩顺波 

机构地区：[1]广东省计量科学研究院,广州510405 [2]武汉龙成电气设备厂,武汉430074 [3]龙口市计量检定所,山东龙口265701

出　　处：《电测与仪表》2006年第8期40-43,共4页Electrical Measurement & Instrumentation

摘　　要：本文介绍了比例偏差值达到(0.2～1)×10-6、测量不确定度达到(1～5)×10-7的直流大电流比例标准自校系统。介绍了用自平衡比较仪通过自校、加法、比较和乘法等校准线路实现直流大电流量值的绝对溯源。Introduced the large direct current proportion standard self-calibration system, which the error ratio is （0.2-1）×10^-6 and the measurement uncertainty is （1-5）×10^-7. It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit, addition circuit, compare circuit and multiplication circuit etc.

关 键 词：直流大电流 自平衡比较仪 自校 

分 类 号：TM933.113[电气工程—电力电子与电力传动]