current limiter

基本解释

PTC element as over-current limiter for program-controlled telephone exchanger is one of the important application of PTC ceramic material.
程控电话交换机过电流保护元件要求用低电阻率高性能的PTC陶瓷材料来制备。
The fault-current limiter (FCL) problems and the background of this thesis are summarized in the first chapter, as well as what's this thesis does.
首先，本文概述了故障限流器的研究现状、存在问题以及本文所作的工作。
High performance PTC ceramic material with low resistivity is desired to prepare an over-current limiter for program-controlled telephone exchanger.
程控电话交换机过电流保护元件要求用低电阻率高性能的PTC陶瓷材料来制备。