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Separating and switching devices for overvoltage protection, especially for DC systems

A switching device and overvoltage technology, applied in emergency protection circuit devices for limiting overcurrent/overvoltage, overvoltage protection resistors, emergency protection circuit devices, etc., can solve problems such as not being able to provide circuit breaker functions

Active Publication Date: 2022-03-04
デーンエスエープルスツェオーカーゲー
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In this case a definite disconnection function cannot be provided

Method used

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  • Separating and switching devices for overvoltage protection, especially for DC systems
  • Separating and switching devices for overvoltage protection, especially for DC systems
  • Separating and switching devices for overvoltage protection, especially for DC systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] first, Figures 1 to 4 Together, a series connection of at least one extraction element 5 and a thermal isolation point 1 comprising a movable conductor element 2 is shown.

[0034] An extraction element, such as a metal oxide varistor, is connected in parallel with the fuse 4 . In this respect, the first fuse pole is connected to the terminal 6 of the extraction element 5 and the second fuse pole is connected to the bypass terminal 3 or forms part of this terminal 3 .

[0035] Figure 4 A refinement is shown which, in addition to the extraction element 5 , also includes an L-N extraction element 9 . The group of outgoing elements 5 , 9 leads at a connection point 11 to an exhaust arrester 10 , the other pole of which is at PE.

[0036] in accordance with figure 1 In the diagrams a-d, a primary arc 7 is generated when the thermal separation point 1 responds and the movable conductor element 2 begins to move. When the movable conductor element 2 is moved further, li...

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PUM

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Abstract

The invention relates to a disconnecting and switching device for overvoltage protection, in particular for direct current systems, comprising at least one outgoing element and also comprising a thermal disconnection point connected to an electrical circuit of the outgoing element. In the connection path, the thermal disconnection point has a movable conductor element which is under mechanical pretension and moves from a first position to a second position in the disconnected situation, wherein, on reaching the second position, it is electrically switched to a fuse Above, the thermal separation part is formed by a movable conductor element and a fixed contact element, and the movable conductor element is fixed on the fixed contact element through a thermally triggerable mechanism. According to the invention, the outgoing element is completely electrically separated with respect to the connection path only when the movable conductor element has passed the second position and has reached the third position, the fuse is connected in series with the outgoing element and the movable conductor The element is configured as a contact brush or as a sliding contact with respect to a second position, which is achieved via the bypass terminal.

Description

technical field [0001] The invention relates to a disconnecting and switching device for overvoltage protection, in particular for DC systems, comprising at least one outgoing element and also a thermal isolating point which is inserted into an electrical connection path of the outgoing element , the thermal disconnection point has a movable conductor element which is under mechanical pretension and moves from a first position to a second position in the disconnected situation, wherein, upon reaching the second position, it is switched electrically to the fuse, The thermal separation part includes a movable conductor element and a fixed contact element, and the movable conductor element is fixed on the fixed contact element through a heat-triggerable mechanism. Background technique [0002] From EP 0 860 927 A1 an electromechanical device is known which monitors the current via a varistor and which, after exceeding a predetermined limit value, is switched on via an electrome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/04H02H7/24H01C7/12
CPCH01C7/126H02H7/24H02H9/042B62J7/04H01H9/30H01H37/761H01H2037/762H01T1/14H02H9/041H02H9/043H02H9/06H01H63/24
Inventor 李红军许年生陈玮娥
Owner デーンエスエープルスツェオーカーゲー