Three-phase isolating switch

An isolation switch and switch technology, applied in electrical switches, high-voltage/high-current switches, high-voltage air circuit breakers, etc., can solve the problems of safety accidents, high cost of isolation and reversing switches, and achieve the effect of ensuring safety

Active Publication Date: 2015-01-28
DIANGUANG EXPLOSION PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention lies in the technical problem that the cost of the isolating reversing switch in the prior art is relatively high and is likely to cause safety accidents, thereby proposing a safe and low-cost three-phase isolating switch

Method used

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Examples

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Embodiment 1

[0040] This embodiment provides a three-phase isolating switch, such as Figure 1-5 As shown, (it should be pointed out that the description of the direction in this implementation refers to the direction in the figure), including the outer casing 1, the air isolation reversing sub-switch and the vacuum isolation sub-switch arranged in series inside the outer casing 1 sub-switches, and rotary triggers, specifically, as image 3 As shown, a first installation space and a second installation space arranged along the height direction are formed inside the outer shell 1, the first installation space is used to accommodate the air isolation reversing sub-switch and the vacuum isolation sub-switch, the second installation space is used for Accommodating the rotary trigger device, the first installation space and the second installation space are separated by the fixing seat 11;

[0041] The air-isolated reversing sub-switch includes a runner 33, a first movable contact 32 electrica...

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PUM

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Abstract

The invention provides a three-phase isolating switch. The three-phase isolating switch comprises a shell, an air isolating reversing secondary switch, a vacuum isolating secondary switch and a rotating trigger device; the air isolating reversing secondary switch and the vacuum isolating secondary switch are arranged in the shell and are arranged in a series-connection mode; the three-phase isolating switch integrates respective advantages of the air isolating reversing secondary switch and the vacuum isolating secondary switch, can break high-power rated currents, and can carry out forced breaking when air leakage happens to a vacuum pipe or the vacuum pipe is damaged, and the production safety is ensured. The rotating trigger device is arranged, it is ensured that the air isolating reversing secondary switch is switched off or switched on under the no-load condition, and all load breaking operations are carried out at the position of the vacuum isolating secondary switch, and electric arcs cannot be generated on the air isolating reversing secondary switch; due to the fact that the vacuum pipe is arranged on the vacuum isolating secondary switch, the vacuum isolating secondary switch plays a role in arc extinguishing, and safety of the three-phase isolating switch is improved. Reversing functions are integrated on the air isolating switch, the structure is simplified, and the production cost is reduced.

Description

technical field [0001] The invention relates to a three-phase isolating switch, which belongs to the technical field of explosion-proof electrical switches. Background technique [0002] The isolating reversing switch is an important device in the mine explosion-proof electromagnetic starter, which is mainly used for the isolation of the main circuit and the reversing of the three-phase asynchronous motor. Mining explosion-proof starters and multi-combination switches need to be installed with isolating reversing switches. The isolation reversing switch can directly and clearly cut off the power supply, get rid of the load in the line behind the isolation reversing switch, and ensure safe production. It can also adjust the running direction of the motor by changing the phase sequence to ensure smooth production. [0003] At present, there are two main types of isolating reversing switch: one is the air type isolating reversing switch, the air type isolating reversing switch...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/52H01H33/66
CPCH01H33/022H01H33/52H01H33/66
Inventor 齐东迁雷跃辉马胜满陈光华陈正雁景文庆张冰珏唐林方宇陆信陈攀
Owner DIANGUANG EXPLOSION PROTECTION TECH CO LTD
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