Under-voltage tripper

A technology of undervoltage release and lock, which is applied in the direction of switch and protection switch operation/release mechanism when the voltage is lower than the predetermined value, and can solve the problems such as disconnection of the release and failure of the circuit breaker to drive.

Active Publication Date: 2012-08-22
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the undervoltage release used in conjunction with the DZ47-60 miniature circuit breaker on the market mainly has the following problems: the undervoltage release mechanism and the assembled circuit breaker mechanism can only be linked in one direction, and when the circuit b

Method used

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Examples

Experimental program
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Embodiment Construction

[0043] refer to Figure 1-4 , an undervoltage release of the present invention includes a base 6, which is characterized in that the base 6 is provided with:

[0044] A connecting rod 17 is arranged in the groove 26 of the base 6, the connecting rod 17 has a first boss 24 linked with the operating mechanism of the circuit breaker and a second boss 30 linked with the contact support 12, so The above-mentioned first boss 24 protrudes outward from the hole of the base 6;

[0045] A first torsion spring 19, the first torsion spring 19 is arranged on the second cylindrical boss 25 of the base 6, one end is in contact with the boss 25 of the base 6, and one end acts on the connecting rod 17;

[0046] A fixed plate 18, the fixed plate 18 is covered on the connecting rod 17 and the first torsion spring 19, for fixing it;

[0047] A toggle joint formed by connecting a manual operation handle 8 with a transmission link 9, the handle 8 is arranged on the first cylindrical boss 27 of th...

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PUM

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Abstract

The invention discloses an under-voltage tripper. The under-voltage tripper comprises a pedestal, and is characterized in that a connecting rod, a first torsion spring, a toggle joint, a rocker arm, a second torsion spring, a lock catch, a hopping catch, a jacking rod, a rocker device and a conducting system are arranged in the pedestal, wherein the toggle joint is formed by connecting a manually operated handle and a driving connecting rod; and a striking pin of an electromagnetic relay is contacted with the lock catch. When an under-voltage tripper mechanism of the under-voltage tripper is tripped, an operating mechanism main lever of the under-voltage tripper returns to drive the connecting rod of a linkage mechanism to move, and the connecting rod drives a mechanism of a breaker spliced with the under-voltage tripper to be tripped at the same time; on the contrary, when being tripped, the breaker mechanism drives the connecting rod in the linkage mechanism of the under-voltage tripper to move, and the connecting rod drives the tripping mechanism of the under-voltage tripper to be tripped at the same time, so that linkage between the under-voltage tripper mechanism and the breaker mechanism is realized. The linkage between the under-voltage tripper mechanism and the breaker mechanism is realized, so that one breaker can reliably splice a plurality of trippers.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to an undervoltage release that can be used in conjunction with a DZ47 miniature circuit breaker. Background technique [0002] The undervoltage release is mainly used for line undervoltage protection. It is used in conjunction with the DZ47-60 miniature circuit breaker to achieve the following control purposes: when the voltage is less than 30% of the rated voltage, ensure that the circuit breaker cannot be closed; when the voltage is 35%-70% When a certain value is within the rated voltage range, it is closed, and when the other values ​​are tripped, the circuit breaker trips and remains unclosed; when the voltage is within 85%-105% of the rated voltage range, the low-voltage release does not operate, and the circuit breaker remains closed. normal work. [0003] At present, the undervoltage release used in conjunction with the DZ47-60 miniature circuit breaker on ...

Claims

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Application Information

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IPC IPC(8): H01H83/12H01H71/12H01H71/24
Inventor 单小龙司莺歌
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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