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Switching-on/switching-off limiting device

A limit device, opening and closing technology, applied in electrical components, electrical switches, protection switch operation/release mechanisms, etc., can solve the problem of low-voltage circuit breakers being inconvenient for single-phase opening and closing operations.

Inactive Publication Date: 2018-09-28
STATE GRID BEIJING ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an opening and closing limit device to solve the problem that the low-voltage circuit breaker in the prior art is not convenient for single-phase opening and closing operations

Method used

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  • Switching-on/switching-off limiting device
  • Switching-on/switching-off limiting device
  • Switching-on/switching-off limiting device

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Embodiment Construction

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0027] The present invention provides an opening and closing limit device, please refer to Figure 1 to Figure 7 , the opening and closing limit device includes: a support frame 10; a limit stopper 20, the limit stopper 20 is installed on the support frame 10, and the limit stopper 20 is located above the circuit breaker 30 to be operated to block the circuit breaker The operating handles of each phase of the circuit breaker 30; the limit block 20 is provided with an avoidance groove 21, and the limit block 20 is movably arranged along the distribution direction of the operation handles of each phase of the circuit breaker 30, so that the avoidance groove 21 moves to The top of each phase oper...

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PUM

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Abstract

The invention provides a switching-on / switching-off limiting device. The device comprises a supporting frame and a limiting stopping sheet; the limiting stopping sheet is installed on the supporting frame; the limiting stopping sheet is located above a circuit breaker to be operated so as to block the operation handles of each phase of the circuit breaker; an avoidance groove is formed in the limiting stopping sheet; the limiting stopping sheet is arranged movably along the arrangement direction of the operation handles of each phase of the circuit breaker, so that the avoidance groove can move to positions above the operation handles of each phase of the circuit breaker sequentially so as to avoid the corresponding operation handles. With the switching-on / switching-off limiting device ofthe invention adopted, a problem that single-phase switching-on / switching-off operation of a low-voltage circuit breaker in the prior art is inconvenient can be solved.

Description

technical field [0001] The invention relates to the field of electric appliances, in particular to an opening and closing limit device. Background technique [0002] At present, the three-phase operating handles of the low-voltage three-phase circuit breaker are fixed together by connecting rods, and only three-phase opening and closing operations can be performed simultaneously during operation. [0003] When it is necessary to switch one of the phases, the three-phase circuit breaker cannot be realized. If it is replaced with three single-phase circuit breakers, it is easy to switch two phases at the same time during operation, and it is not convenient to limit only one of the phases. Switching and closing operations, the other two phases cannot be opened and closed. Contents of the invention [0004] The main purpose of the present invention is to provide an opening and closing limit device to solve the problem that the low-voltage circuit breaker in the prior art is i...

Claims

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Application Information

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IPC IPC(8): H01H71/10H01H9/00
CPCH01H71/10H01H9/0072
Inventor 彭新立祁波李春清刘卫东白广王德敏彭新义
Owner STATE GRID BEIJING ELECTRIC POWER