An automatic transfer switch controller

Abstract

The invention relates to an automatic change-over switch controller, which is characterized by comprising a circuit, wherein the circuit comprises auxiliary switches and reversible motors of a standby switch and a common switch of an automatic change-over switch; the auxiliary switch of the standby switch is connected with an input end of an optical coupling through a resistor; an output end of the optical coupling is connected with a first intermediate relay through a key; a node of the first intermediate relay is connected with second and third intermediate relays and the auxiliary switch and the reversible motor of the common switch of the automatic change-over switch; and control coils of the second and third intermediate relays are connected with A phases of common and standby power supplies and respective zero lines respectively. According to the automatic change-over switch economical controller, the setting of automatic switching and restoring and automatic switching but non-restoring functions can still be realized by using the practical circuit, and the functions of the economical controller are enriched.

Description

technical field [0001] The invention belongs to an electric switch, in particular to an automatic transfer switch controller. Background technique [0002] At present, the automatic transfer switch is widely used as an important power load switching element in the power supply and distribution network. The importance of its intelligent controller as the core control component of the automatic transfer switch can be seen. Generally, the popular automatic transfer switch controllers on the market are divided into economic type, basic type and intelligent type according to the degree of intelligence, which will determine the overall production cost of automatic transfer switches. Among them, the remarkable feature of the economic type is that there is no control chip, and the functions of automatic switching and automatic recovery and automatic switching without automatic recovery are generally identified by the control chip, so this function can only be used as a basic or int...

AI Technical Summary

Problems solved by technology

Among them, the remarkable feature of the economical type is that there is no control chip, and the functions of automatic switching and automatic recovery and automatic switching without automatic recovery are generally identified by the control chip, so this function can only be used as a basic or intelligent function.

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