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Interlocking device for circuit breaker, and circuit breaker group with interlocking device

A technology of interlocking devices and circuit breakers, which is applied in the direction of emergency protection devices, circuits, parts of protective switches, etc., can solve problems such as poor safety, high assembly precision requirements, and poor reliability of interlocking devices, so as to achieve convenient operation and improve The effect of device security

Active Publication Date: 2017-07-14
JIANGSU DAQO KFINE ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: In order to overcome the problems of high assembly precision requirements, poor reliability and poor safety of existing interlocking devices when three circuit breakers are interlocked in the prior art, the present invention provides an interlocking device for circuit breakers. The device has high safety, reliability, and good stability; at least it can meet the interlocking requirements among three circuit breakers, and has strong applicability; and it is convenient to operate and debug, and convenient and flexible to disassemble; at the same time, the invention provides an interlocking The circuit breaker group of the device, which ensures that at least one circuit breaker is in the open state during use, has strong applicability and good scalability, and can meet different requirements for product interlocking in practical applications

Method used

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  • Interlocking device for circuit breaker, and circuit breaker group with interlocking device
  • Interlocking device for circuit breaker, and circuit breaker group with interlocking device
  • Interlocking device for circuit breaker, and circuit breaker group with interlocking device

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Embodiment 1

[0029] An interlocking device for a circuit breaker in this embodiment, the interlocking device can be used for the interlocking of the circuit breaker, the interlocking device includes a plurality of interlocking units, each interlocking unit is respectively connected to the corresponding circuit breaker, the interlocking The unit and the interlocking unit are connected by cables, refer to figure 1 and figure 2 , the interlocking device includes a base plate 1, the base plate 1 is a whole, on the base plate 1 is provided with a driving part 40, a limit part 41, a driven part 50, a control part 51, a driving part Reset extension spring 45, follower reset extension spring 55, control member reset extension spring 56 and two cables; the driver 40 and the base plate 1 are connected through the drive shaft 42, and the drive shaft can be connected to the main shaft of the connected circuit breaker Operatively connected, the driving shaft 42 passes through the base plate 1 and is ...

Embodiment 2

[0031] An interlocking device for a circuit breaker in this embodiment, on the basis of Embodiment 1, refer to figure 1 and 2 , the base plate 1 includes a base plate 10, an auxiliary plate 20 and a support plate 30, the auxiliary plate 20 and the support plate 30 are respectively arranged on the upper part and the lower part of the base plate 10, and the auxiliary plate 20 and the support plate 30 are fixed on the The upper and lower parts of the base plate 10 can also be integrated with the base plate 10 (the base plate 1 is a whole in the first embodiment), fully considering the versatility of parts of the interlocking device;

[0032] One end of the driver reset extension spring 45 is connected to the driver 40, the other end of the driver reset extension spring 45 is connected to the top of the substrate 10, one end of the follower reset extension spring 55 is connected to the follower 50, and the follower reset extension spring 55 is connected to the other end of the fol...

Embodiment 3

[0035] refer to figure 1 and 2 , an interlocking device for a circuit breaker in this embodiment, on the basis of Embodiment 2, four cable fixing bolts are provided on the base plate 1, and the four cable fixing bolts are respectively arranged on the bottom of the support plate 30, respectively. It is used to fix the two cables protruding from this interlocking unit and the two cables leading in from the other two interlocking units.

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Abstract

The invention discloses an interlocking device for a circuit breaker, and a circuit breaker group with the interlocking device. The interlocking device comprises a plurality of interlocking units, and the interlocking units are respectively connected with the corresponding circuit breakers. The interlocking units are connected with cables. Each of the interlocking units comprises a substrate, a driving part, a limiting part, a driven part, a control part, a driving part resetting tension spring, a driven part resetting tension spring, a control part resetting tension spring, and two cables, wherein the driving part, the limiting part, the driven part, the control part, the driving part resetting tension spring, the driven part resetting tension spring, the control part resetting tension spring and the two cables are disposed on the substrate. The circuit breaker group with the interlocking device comprises the interlocking device and a plurality of circuit breakers. Each interlocking unit of the interlocking device is connected with the corresponding circuit breaker, and the interlocking units are connected through cables. The interlocking device is high in safety, is high in reliability, and is good in stability. Moreover, the device can meet the interlocking requirements of three circuit breakers, and is high in applicability. Moreover, the device is convenient to operate and debug, and is convenient and flexible for disassembly. The circuit breaker with the interlocking device is good in extendibility, and can meet the actual application demands.

Description

technical field [0001] The invention belongs to the technical field of interlocking device design of low-voltage power distribution systems, and particularly relates to an interlocking device for circuit breakers and a circuit breaker group having the interlocking device. Background technique [0002] The power supply and distribution system is one of the core contents of electrical design. Even if the high-voltage power supply is taken from the same bus section, in order to limit the short-circuit capacity of the system and prevent the parallel operation of the transformers, interlocking between the low-voltage bus sections of the transformer is required. Therefore, after the power supply and load are determined, the interlocking method of the low-voltage power distribution system becomes an important factor affecting the system wiring scheme. [0003] Interlocking methods are usually divided into two categories: electrical interlocking and mechanical interlocking. It is a...

Claims

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Application Information

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IPC IPC(8): H01H71/10
CPCH01H71/1018
Inventor 张林娜陈大江张小凯朱富银候魁
Owner JIANGSU DAQO KFINE ELECTRIC
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