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DC arc-extinguishing circuit

A technology of arc suppression circuit and absorption circuit, which is applied in the direction of circuits, electric switches, electrical components, etc., can solve problems such as difficult arc suppression, and achieve the effects of reducing potential difference, preventing DC arcing phenomenon, and improving DC arcing phenomenon

Inactive Publication Date: 2016-02-24
JIANGSU EVER SOLAR NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there is no current zero crossing point for DC current, it is difficult to extinguish the arc after the arc is generated; the arc cannot disappear automatically until the two contacts of the connector are separated to a sufficient distance

Method used

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  • DC arc-extinguishing circuit

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Experimental program
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Embodiment 1

[0018] Embodiment one: see attached figure 1 As shown, a DC arc suppression circuit includes a connector contact 1, a main contact 2 and an auxiliary contact 3, and the main contact 2 and the auxiliary contact 3 are connected through a first capacitive absorption circuit, which also A second capacitive snubber circuit connected in parallel with the load 6 is included.

[0019] The auxiliary contact 3 is arranged at a position where the connector contact 1 must contact before contacting the main contact 2 . The first capacitive absorption circuit includes a first capacitor 4 and a first resistor 7 connected in series. The first capacitive absorption circuit includes a second capacitor 5 and a second resistor 8 connected in series.

[0020] When the contact 1 of the connector is separated from the main contact 2, the current of the connector is transferred to the first capacitive absorption circuit, and the second capacitive absorption circuit releases the stored charge...

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PUM

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Abstract

The invention discloses a DC arc-extinguishing circuit, and the circuit comprises a connector contact, a main contact, and an auxiliary contact, wherein the main contact and the auxiliary contact are connected through a first capacitive absorption circuit. The circuit also comprises a second capacitive absorption circuit in parallel connection with a load. The circuit employs two capacitive absorption circuits, so the circuit further reduces the electric potential difference when the connector contact is separated from the main contact, and can avoid a DC arcing phenomenon better.

Description

technical field [0001] The invention relates to a DC arc suppression circuit. Background technique [0002] When the two contacts of the connector are electrically separated, as long as the voltage in the circuit is greater than 10-20V. Current greater than 80 ~ 100mA. An arc may occur between the moving and static contacts. Although the contacts have been separated at this time, the current continues to flow through the arc between the contacts. [0003] The instantaneous current value of the alternating current changes periodically with time, so at the zero-crossing point of the current, the current becomes 0 and the arc disappears automatically. However, since the DC current has no current zero crossing point, it is difficult to extinguish the arc after the arc is generated; the arc cannot disappear automatically until the two contacts of the connector are separated to a sufficient distance. [0004] Arc is a free gas with high temperature and high conductivity. It no...

Claims

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Application Information

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IPC IPC(8): H01H9/30H01H9/42
CPCH01H9/30H01H9/42
Inventor 缪小俊
Owner JIANGSU EVER SOLAR NEW ENERGY CO LTD