Quick automatic change-over switch
A technology of automatic transfer switch and action coil, applied in electric switches, power devices inside switches, electrical components, etc., can solve the problems of short service life, high price, slow conversion speed, etc., and achieve long service life and fast conversion speed. , cost-effective effect
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[0010] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0011] see figure 1 , the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the working indicator d1 and the common power supply U N At the same time, the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the working indicator light d1 is connected in parallel with the action coil of the intermediate relay ZJ after passing through the self-locking button SB1, and in parallel with the action coil of the AC contactor KM1 , In addition, the series circuit of the normally open auxiliary contact of the AC contactor KM1 and the work indicator light d1 is also connected in parallel with the power indicator light D1. The series circuit of the normally open auxiliary contact of the AC co...
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