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Three-position switch-circuit breaker device and interlocking device thereof

A three-position switch and circuit breaker technology, applied in electrical switches, circuits, electrical components, etc., can solve the problems of burning out the three-position switch and causing accidents, etc.

Active Publication Date: 2017-12-29
XUJI GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to its own characteristics, when the circuit breaker is in the closed state, it is strictly forbidden to operate the isolating switch, otherwise the three-position switch will be burned out, causing accidents

Method used

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  • Three-position switch-circuit breaker device and interlocking device thereof
  • Three-position switch-circuit breaker device and interlocking device thereof
  • Three-position switch-circuit breaker device and interlocking device thereof

Examples

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Embodiment Construction

[0048] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] Specific embodiment 1 of the three-position switch circuit breaker interlocking device of the present invention, as Figure 1 to Figure 5 Shown: figure 1 The structure and structure of the interlocking device in this embodiment are shown. It can be seen from the figure that it includes a side plate 12 , a cam device, a locking lever 9 , an in-position confirming lever 1 , an operating shaft 6 , a shutter 5 , a first connecting rod 10 and a second connecting rod 4 . Wherein the side plate 12 is the basis of the whole interlocking device, and all the other components are installed on the side plate 12 . In this embodiment, the side plate 12 is a flat plate, and its outer contour shape is designed in consideration of its installation and material saving. In other embodiments, the shape of the side plate 12 can also be designed arbitrarily according...

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Abstract

The invention relates to the field of electrical switches, in particular to a three-position switch-circuit breaker device and an interlocking device thereof. The interlocking device includes a side plate. A three-position switch linking piece and a circuit breaker linking piece are installed on the side plate. The three-position switch linking piece includes a cam device used for being in synchronous transmission connection with a three-position switch. The circuit breaker linking piece includes an interlocking rod. One end of the interlocking rod is hinged to the side plate or to an attachment installed on the side plate, and the other end forms a connecting end used for being in transmission connection with a circuit breaker. The cam device is on the swing path of the interlocking rod, and is provided with an interlocking boss which is used for being in stop fit with the interlocking rod to lock the three-position switch when the circuit breaker is closed, and pushing against the interlocking rod to lock the circuit breaker to a tripping position when the three-position switch is in a non-working position. Interlocking between a three-position switch and a circuit breaker is realized.

Description

technical field [0001] The invention relates to the field of electrical switches, in particular to a three-position switch-circuit breaker device and its interlocking device. Background technique [0002] Three-position switches and circuit breakers are two indispensable switching devices in power transmission and distribution systems. Among them, the circuit breaker has a strong arc extinguishing ability, and is mainly used for breaking and conducting large currents. The three-position switch is a kind of protective switch, which mainly plays the role of protecting the safety of the operator. When applied, the two are used in conjunction with each other and play a complementary role. Due to its own characteristics, it is strictly forbidden to operate the isolating switch when the circuit breaker is in the closed state, otherwise the three-position switch will be burned out and cause an accident. Correspondingly, when the three-position switch is in the non-working positi...

Claims

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Application Information

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IPC IPC(8): H01H9/26
CPCH01H9/26
Inventor 张艳晓张杰王帮田曹善军汪威吴为王金雷王小丽李燕燕穆俊超
Owner XUJI GRP
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