【摘要】 文章通过对交流接触器、晶闸管电子开关和固态继电器等开关优缺点的分析与比较,介绍一种新型的电容器投切开关-机电复合开关。此种复合开关由交流接触器和固态继电器并联组成,既具有固态继电器过零投切涌流小、无过电压的优点,又具有接触器主触点导通容量大、无功耗的优点。是电容投切比较理想的开关。更多还原

【Abstract】 Through analysis and comparison of the advantages and disadvantages the merits and faults of AC contactor,thyristor electronic switch and the solid state relay(SSR),a new kind of capacitors-electromechanical combination switch was introduced.This switch consisted of AC contactor and SSR,which not only had the advan-tages of SSR,such as zero switching,little inrush current and no over-voltage,but also had the advantages of con-tactor,such as high conducting capacity of main contacts and no power consumption.So it is ideal for swithing of capacitor.更多还原