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A large opening distance dual power automatic transfer switch

An automatic transfer switch and dual power supply technology, which is applied to electric switches, power devices inside switches, circuits, etc., can solve the problems of limited arc extinguishing performance, limited arc extinguishing ability, and small opening distance, so as to improve the breaking arc extinguishing ability And work stability, the effect of the best arc extinguishing effect

Active Publication Date: 2020-08-21
BEIJING MINGRI ELECTRICAL EQUIP
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AI Technical Summary

Problems solved by technology

Chinese patent document 2015108472749 discloses a contact arc extinguishing system for a dual-power automatic transfer switch. Since the contact systems of the normal power supply and the backup power supply are arranged oppositely, and share an N-type arc extinguishing box, its volume is greatly reduced, but the extinguishing The arc capacity is limited. Chinese patent document 2016100795722 discloses a link action mechanism of a dual power supply automatic transfer switch. Due to the structural limitation of the link action mechanism, the maximum rotation angle of the movable contact shaft is 25 degrees, so that the dynamic and static contacts The opening distance between them is small, which limits the improvement of its arc extinguishing performance

Method used

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  • A large opening distance dual power automatic transfer switch
  • A large opening distance dual power automatic transfer switch
  • A large opening distance dual power automatic transfer switch

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Embodiment Construction

[0032] First of all, it should be noted that the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "vertical", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "common power supply" and "backup power supply" are only used to describe the location on the drawing, and should not be understood as indicating or implying the inherent characteristic names of the location in actual use.

[0033] Below, combine Figure 1 to Figure 10 , the present invention will be further described through specific examples.

[0034] A large o...

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Abstract

A large open-distance dual-power automatic transfer switch comprises an electromagnet drive mechanism, a lever transmission mechanism and a contact arc extinguishing mechanism, wherein the lever transmission mechanism comprises a transmission lever and an action arm, a fulcrum shaft is arranged in the middle of the transmission lever, a force end is provided with a force point groove, a resistanceend is provided with a blocking shaft, the action arm is set to an L shape, one end of the action arm is provided with a waist hole, and the other end is vertically fixed with a movable contact shaft. The common power transmission lever and the backup power transmission lever are oppositely disposed in the installation base plate by the lever cover, and the end of the movable contact shaft of theaction arm is sleeved on the installation base plate, and the waist hole on the action arm is sleeved in the blocking shaft of the resistance end of the transmission lever. Due to the special structure of the lever transmission mechanism, the rotation shaft equipped with the movable contact can obtain a rotation angle of 36 degrees, so that the opening distance of a dynamic contact and a static contact of the dual-power supply reaches 23mm, which is beneficial to the arc extinguishing of the contact arc extinguishing mechanism of the dual power, and improves the breaking and arc extinguishingcapability and working stability of the dual power.

Description

[0001] The invention relates to a low-voltage electrical appliance, in particular to a double-power automatic transfer switch with a large opening distance. Background technique [0002] Dual power automatic transfer switch is a commonly used low-voltage electrical appliance. It is often used to switch between two power sources to ensure that when one power source fails or stops supplying power, the other power source can be quickly switched to ensure the normal power supply of the load circuit. Chinese patent document 2015108472749 discloses a contact arc extinguishing system for a dual-power automatic transfer switch. Since the contact systems of the normal power supply and the backup power supply are arranged oppositely, and share an N-type arc extinguishing box, its volume is greatly reduced, but the extinguishing The arc capacity is limited. Chinese patent document 2016100795722 discloses a link action mechanism of a dual power supply automatic transfer switch. Due to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/28H01H9/26H01H9/34
CPCH01H3/28H01H9/26H01H9/34
Inventor 冷岩王晖
Owner BEIJING MINGRI ELECTRICAL EQUIP
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