A current-comparator-based system for calibration of optical instrument transformers with analog and digital outputs

被引：2

作者：

So, E ^{[1
]}

Arseneau, R ^{[1
]}

Bennett, D ^{[1
]}

机构：

[1] Natl Res Council Canada, Ottawa, ON K1A 0R6, Canada

来源：

2002 CONFERENCE ON PRECISION ELECTROMAGNETIC MEASUREMENTS, CONFERENCE DIGEST | 2002年

关键词：

D O I：

10.1109/CPEM.2002.1034817

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An overview of the development of a system comprising of instruments, based on the current-comparator technology, for calibration of optical instrument transformers with analog and digital outputs is presented. The instruments include a transimpedance amplifier for operation of input currents from 1 A to 10,000 A, a high voltage active divider for operation of input voltages from 1 kV to 500 kV, a current-comparator bridge, and two sampling voltmeters. The current comparator is used in a feedback loop to correct the magnitude and phase of the outputs of the transimpedance amplifier and the high voltage active divider to an accuracy of better than 10 parts per million and 10 murad, respectively. The sampling voltmeters are effectively used as 18-bit A/D converters.

引用

页码：252 / 252

页数：1

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