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Electromagnetic release and its residual current device

An electromagnetic release and residual current technology, which is applied in circuit devices, emergency protection circuit devices, and automatic disconnection emergency protection devices, etc., can solve problems such as electromagnetic release inoperable

Inactive Publication Date: 2017-11-14
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] exist figure 2 In the situation shown, if the L1 phase or L3 phase fails, the coil winding of the electromagnetic release cannot be connected with current, so that the electromagnetic release cannot operate

Method used

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  • Electromagnetic release and its residual current device
  • Electromagnetic release and its residual current device
  • Electromagnetic release and its residual current device

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Embodiment Construction

[0042] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent the same parts or parts with different structures but the same functions.

[0043] In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions.

[0044] In order to make the drawing concise, the parts related to the present invention are only schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, only one of the components having the same structure or function is schematically shown, or only one of them is ma...

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PUM

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Abstract

The invention discloses an electromagnetic trip of a residual current device. The electromagnetic trip comprises a static iron core (20), a movable iron core (30), and at least two coil windings. The movable iron core can be attracted with or separated from the static iron core. The coil windings are mutually insulated and are the same in winding directions. The coil windings can be respectively in series connection between any two phase lines in a three-phase power supply circuit, or between any one phase line and a null line. According to the electromagnetic trip of the residual current device, when a certain power supply circuit of the three-phase alternating current power supply circuit fails, the electromagnetic trip can act through electrifying one of the at least two coil windings, so that the use reliability of the residual current device is greatly improved.

Description

technical field [0001] The invention relates to an electromagnetic release, in particular to an electromagnetic release for a residual current device. The invention also relates to a residual current device using the electromagnetic release. Background technique [0002] figure 1 It is a schematic diagram for explaining the principle of an electromagnetic release of an existing residual current device. As shown in the figure, the electromagnetic release of the residual current device includes a static iron core 95 , a moving iron core 96 and a coil winding 97 . Wherein the coil winding 97 surrounds the static iron core 95 and the moving iron core 96 . The moving iron core 96 can be adsorbed or separated from the static iron core 95 along the direction indicated by the arrow in the figure. When there is no residual current in the power supply line, no current passes through the coil winding 97, and the moving iron core 96 is separated from the static iron core 95. When t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/28H02H3/32
CPCH01H71/28H02H3/34
Inventor 张业琼-玛丽·梅特尔徐首旗杨林
Owner SIEMENS AG