矿井6kV鼠笼型感应电动机直接起动

Direct Starting of 6kV Squirrel-cage Induction Motor for Mine Use

矿井交流拖动系统中,采掘设备几乎100％是用鼠笼型感应电动机。在4种主要大型设备中,除提升绞车外,其它如排水、通风及压风设备均大量地选用高压鼠笼型感应电动机。6kV鼠笼型感应电动机的起动,由于一些必须的资料不易齐全,加之计算较繁,使得本来可以直接起动的鼠笼型异步电动机,也往往使用降压起动,对一些大功率电动机,更是如此,这是一个应引起注意的问题。

Starting with an analysis of advantages and disadvantages of direct starting,the paper describes thoretically the conditions that should be satisfied for direct starting and the relationship between the capactity of feeding transformer and allowable capacity of motor for direct starting.For ease of calculation the author proposes a series of calculation tables.