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什么是软起动器？
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什么是软起动器？
时间：2021-12-29 20:27
关键词：
电力拖动与控制系统
动力与电气工程
大学试题
工学
答案解析
<p> 当电压降低时，起动电流将随电压成正比地降低，从而可以避开起动电流冲击的高峰。起动转矩与电压的平方成正比，起动转矩的减小将比起动电流的降低更多，降压起动时又会出现起动转矩不够的问题。降压起动只适用于中、大容量电动机空载（或轻载）起动的场合</p>
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