On the Mechanical Short-Time Rating of a Current Transformer

被引：2

作者：

Gopalakrishna, S. ^{[1
]}

Ilampoornan, M. K. ^{[1
]}

Jayashankar, V. ^{[1
]}

机构：

[1] Indian Inst Technol Madras, Dept Elect Engn, Madras 36, Tamil Nadu, India

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2009年 / 24卷 / 01期

关键词：

Current transformer (CT); finite-element method (FEM); short-time rating; SINGLE;

D O I：

10.1109/TPWRD.2008.2007008

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：

Closed form expressions and a finite-element method are used to compute the maximum force in the primary conductor of a wound current transformer (CT). It is shown that for a given volume for the primary winding, one configuration exists that leads to a maximum force. It is proved that the mechanical short-time rating of two CTs having different turns but identical ampere turns is not equivalent. Designers can now establish and test a CT with a worst-case configuration.

引用

页码：480 / 481

页数：2

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