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Device for protecting electrical equipment against overvoltages

A technology of overvoltage protection and electronic equipment, which is applied in the direction of emergency protection circuit devices, emergency protection circuit devices, circuit devices, etc. for limiting overcurrent/overvoltage, and can solve the problems of mechanical separation and loosening, etc.

Inactive Publication Date: 2012-06-27
OBO BETTERMANN GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this arrangement is that, in the event of a fault, although the welded connection between the contact piece and the varistor is loosened, so that the varistor is disconnected from the circuit circuit, contact is not permitted under any circumstances, Because there is no mechanical separation between the contact piece and the contact position of the varistor
Furthermore, it is disadvantageous that in the case of slag welding, the welding points formed in the form of thermal fuses may already loosen during the production of the device

Method used

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  • Device for protecting electrical equipment against overvoltages
  • Device for protecting electrical equipment against overvoltages
  • Device for protecting electrical equipment against overvoltages

Examples

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Embodiment Construction

[0028] exist figure 1The components of the device for overvoltage protection are shown in . The device consists of an upper housing part 1 and a lower housing part 2 . The two housing parts are made of insulating material. The two housing parts can be assembled and snapped together in a corresponding manner. The overvoltage element, which will be described below, as well as the terminal 3 for the phase conductors L1 to L3 as well as the terminal 4 for the neutral conductor and the terminal 5 for the protective conductor are provided in the housing. The circuit is set up in such a way that variable resistors 6 are respectively connected between the phase and neutral conductors as overvoltage protection. Furthermore, a spark gap 7 is inserted between the neutral conductor and the protective conductor. For the specified configuration, a printed circuit board 8 equipped with a varistor 6 and terminals 3 , 4 , 5 is arranged in the housings 1 , 2 . Fusible links 9 are welded on...

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Abstract

The invention relates to a device for the protection of electrical equipment against overvoltages, consisting of a housing (1, 2) and overvoltage protection elements arranged within the housing, a printed circuit board (8) being arranged in the housing (1, 2), with the varistors (6) and connection terminals (3, 4, 5) mounted thereon, and fuse strips (9) soldered to the circuit board (8), at leastone of which is soldered to the contact point (10) of each varistor (6), wherein in the event of a solder joint becoming overheated due to an overvoltage event, a contact separator (11) is pushed into the gap between the fuse strip (9) and a varistor (6), breaking the solder connection, and holding the fuse strip (9) away from the varistor (6) in the region of the solder joint (10).

Description

technical field [0001] The invention relates to a device for overvoltage protection of electronic equipment, which consists of a housing, an overvoltage protection element arranged inside the housing, and a terminal for multiple phase conductors, a neutral conductor and a protective conductor (PE -Leiter), wherein a varistor is inserted between the phase and neutral conductors as an overvoltage protection element, and a spark gap is inserted between the neutral conductor and the protective conductor, wherein a fuse link is arranged in the housing, these At least one fuse link in each of the fuse links is welded on the contact position of the varistor; and a separation slider is arranged between the fuse link and the surface on which the fuse link of the varistor is welded. The spring is held preloaded in the first functional position, in which the components of the separating slide abut against the fuse link close to the welding position of the fuse link on the varistor, and s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04H01T1/14H01T4/06
CPCH01T4/06H01T1/14
Inventor O·施米特U·奥戈雷克
Owner OBO BETTERMANN GMBH & CO KG
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