An Electric Vacuum Isolation Reversing Switch with Manual Isolation Switch

Abstract

The invention relates to an electric vacuum isolation reversing switch with a manual isolation switch. The unit realizes the on-off of the dynamic and static contacts in the vacuum tube through its electromagnetic operating device, so as to make the circuit on-off and the phase sequence conversion; the vacuum isolation reversing switch also includes a group of manual isolation switches installed on the frame, The manual isolating switch includes a manual isolating operating device, three sets of isolating dynamic and static contact groups and their incoming and outgoing line bars, which are used to break the circuit when the internal contacts of the vacuum tube are stuck or otherwise abnormal. The invention has beneficial effects: electric breaking and reversing, manual safety isolation, simple operation, stable performance, high reliability, less maintenance and convenient replacement.

Description

technical field [0001] The invention relates to a switch device, in particular to an electric vacuum isolation reversing switch with a manual isolation switch. Background technique [0002] There are two main types of existing mine isolating and reversing switches: one is an air-type isolating and reversing switch; the other is a vacuum-type isolating and reversing switch. Among them: the breaking capacity of the air-type isolating commutation switch is poor, generally it can only break 3 times the rated current, and a large arc is generated when it is segmented, the safety is poor, the contacts are easy to burn, and the service life is short; while the vacuum The contacts of the type isolation commutation switch work in a vacuum state, the breaking current is large, there is no arc outside the vacuum tube, the arc inside the vacuum tube is small, the contacts are not easy to burn, and the service life is long. The vacuum type isolation commutation switch is due to the above...

AI Technical Summary

Problems solved by technology

[0003] The invention overcomes the disadvantages of the prior art and provides an electric vacuum isolation reversing switch with a manual isolation switch, which not only realizes breaking in an electric manner, but also has a manual isolation switch. The entire switch structure design is compact and reasonable , to solve the problem that the vacuum isolation commutation switch in the prior art adopts a manually operated mechanical structure to achieve the purpose of breaking. The mechanical structure is complex, the breaking capacity is low, and there is no obvious break point. After the contact inside the vacuum tube is stuck, there is no breaking capacity, and the safety is relatively high. bad question

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