Extraction type automatic change-over electric appliance with by-path

Abstract

The invention relates to a draw-out automatic changeover switch provided with a shunt circuit. Prior automatic switchover switch needs repair and replacement during changeover, therefore, the operation is very inconvenient. The invention comprises a main-body switch, rollers, guide rails, locating pins, a shunt-circuit frame and a power supply connecting terminal A, a power supply connecting terminal B, a load connecting terminal, a shunt-circuit contact self-locking mechanism, a shunt-circuit moving contact, a shunt-circuit static contact, a shunt-circuit draw-out interlocking mechanism fixed on the frame. The switch mainly has the functions of draw-out and shunt circuit. When the main-body switch needs repair or replacement, the shunt circuit is switched on, the power is supplied to the load by a normal power supply, the main-body switch is drawn out to be repaired or replaced outside the power supply circuit; after repair, the main-body is pushed into the frame, the shunt-circuit switch is switched off, and the switch main-body is integrated into the system for continuous operation. Such process does not influence normal power supply to the load, and the repair and replacement become more convenient and rapid.

Description

technical field [0001] The invention relates to the field of electronic switches, in particular to a draw-out type automatic switch electrical appliance with a bypass. Background technique [0002] The existing automatic transfer switches on the market all adopt fixed installation, and the body switch is directly installed in the power distribution circuit. The dual-power automatic transfer switch itself also has the need for maintenance and replacement. When performing maintenance or replacement, the switch body needs to be disassembled, and then reinstalled after repairing. It takes a lot of time for each disassembly and assembly. All kinds of wiring and fixing are troublesome, and multiple disassembly and assembly of wiring can easily cause more potential safety hazards. The larger-capacity dual power automatic transfer switch itself and the copper bars or cables connected to it are very heavy and inconvenient to disassemble. [0003] Since the fixed-installed dual-powe...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing automatic transfer switch itself when it needs to be repaired or replaced, and provides a withdrawable automatic transfer switch with bypass. The frame of the automatic transfer switch is fixedly installed in the circuit, the ball switch There is a pull-out mechanism between the main body and the frame. When the dual power automatic transfer switch itself is being repaired or replaced, it can be easily pulled out from the frame, and repaired or replaced outside the power distribution cabinet. After completion, the main body switch can be inserted into the frame, into circuit work

This process does not need to disassemble the wiring and fixing bolts of the dual power switch

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