Surge protective device (SPD) and trip mechanism thereof

A technology of tripping mechanism and surge protector, applied in the field of tripping mechanism, can solve problems such as unfavorable electrical isolation, MOV explosion, difficulty in meeting synchronization, etc.

Active Publication Date: 2013-05-08
SCHNEIDER ELECTRIC IND SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, this conventional surge protector tripping mechanism has a problem that the tripping bar 1 basically moves in a plane parallel to the side of the MOV 5, and therefore, even when the tripping bar 1 trips, the tripping The electrical distance between snap rod 1 and the electrodes of MOV 5 is very short, which is not conducive to the electrical isolation between the two in the case of tripping
However, when the tempe

Method used

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  • Surge protective device (SPD) and trip mechanism thereof
  • Surge protective device (SPD) and trip mechanism thereof
  • Surge protective device (SPD) and trip mechanism thereof

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Embodiment Construction

[0040] The tripping mechanism according to the preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] refer to Figure 2A to Figure 5 , to describe the tripping mechanism 100 according to the first embodiment of the present invention. The tripping mechanism 100 includes a bracket 110 , which is roughly in the shape of a box to accommodate the MOV 200 . A pivot 111 is formed at the upper right corner of the bracket 110 , and the trip lever 120 is pivotally disposed on the bracket 110 around the pivot 111 . Specifically, a recess or hole may be formed at one end 121 (the right end in the figure) of the trip lever 120, and the pivot shaft 111 is inserted into the recess or hole. In addition, the trip bar 120 is also connected to the terminal 300 of the surge protector through the lead wire 122, and the terminal 300 is used for connecting the surge protector to an external circuit.

[0042] Such as ...

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Abstract

The invention discloses a surge protective device (SPD) and a trip mechanism of the SPD. The trip mechanism comprises a support and a trip rod, wherein the support is used for containing at least one metallic oxide rheostat, and the trip rod is arranged on the support in a pivotal mode and connected with one of electrodes of the metallic oxide rheostat through low-temperature soldering flux. The trip mechanism further comprises a sliding block, the sliding block is arranged between a first position and a second position on the support in a sliding mode and obliquely pressed to a trip position, and under the normal working condition, the sliding block is maintained in the first position due to the fact that the oblique press is overcome by the trip rod. under the trip condition, under the action of the oblique press, the sliding block slides towards the second position to cause the trip rod to pivotally rotate along the direction which is far from the electrodes of the metallic oxide rheostat.

Description

technical field [0001] The present invention relates to a surge protector, and more particularly to a tripping mechanism for the surge protector. Background technique [0002] Surge protectors are widely used in electrical lines in homes, offices, and industrial places to prevent damage to electrical equipment caused by instantaneous overvoltage in the line. When the electrical circuit or communication line suddenly generates peak current or voltage due to external interference, the surge protector can conduct the shunt in a very short time, so as to avoid the damage of the surge to other equipment in the circuit. [0003] In the most commonly used surge protectors, a component called a metal oxide varistor (MOV) is included to divert excess voltage. The metal oxide varistor has a very large resistance under normal operating conditions, thus, it is basically in an open circuit state, and when the voltage in the circuit exceeds a predetermined value, for example, in the even...

Claims

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Application Information

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IPC IPC(8): H01H71/12H01H83/10
CPCH01H2037/762H01H71/12H02H9/042H01H83/10H01H37/761H01C7/126H01T1/14
Inventor 孙玮刘全和
Owner SCHNEIDER ELECTRIC IND SAS
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