Ampere turns

Basing on signification of initiating ampere-winding of permanent magnetic actuator,influence of initiating ampere-winding on comprehensive development of permanent magnetic actuator was analyzed.

针对永磁机构始动安匝的意义,分析了始动安匝对永磁机构整体发展的影响,提出了优化配置始动安匝参数的基本方法与应用,通过仿真计算证明了采用不同的激磁方式可优化配置安匝参数并有效降低激磁电流,同时改善了分、合闸运动的动态特性。

The non uniformly-distributed equal ampere-turns test,which concentrates the primary turns on one part of the current transformer s core,was presented to measure the error of current transformer in actual working environment.

为更好揭示以非均绕等安匝法测试电流互感器误差的原理,用有限元法计算分析了电流互感器的三维非工作磁场、铁心中合成磁场的分布及其随一次绕组在铁心上缠绕角度改变的变化特征。

Domestic authorities presented the uniformly-distributed equal ampere-turns verification method, which concentrates the primary turns on one part of the current transformer’s core, to measure the error of current transformer in actual working environment.

为了检测电流互感器在实际工作环境中的实际误差,国内权威部门提出一种在被检电流互感器铁心上局部缠绕一次绕组的所谓非均绕等安匝检定方法。