Interlocked changeover switch

A transfer switch and interlocking technology, applied in the direction of electric switches, electrical components, circuits, etc., can solve problems such as difficult loop mechanical interlocking, difficult installation and maintenance, and complicated electrical structure, so as to improve the quality of power supply and the safety of power supply , The effect of simplifying the primary loop
CN101447345AInactive Publication Date: 2009-06-03湖南电器研究所
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
湖南电器研究所
Publication Date
2009-06-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides an interlocked changeover switch which comprises N circuit switches and N actuators superposed on the N circuit switches correspondingly, wherein the N circuit switches and the N actuators are in centralized transverse arrangement on a base plate. The N actuators are interconnected via a shared mechanical interlocking mechanism. The mechanical interlocking mechanism comprises a strip-shaped guide rail and (N-1) stoppers arranged inside the II-shaped opening on the guide rail. The guide rail is connected on the panel of the N actuators. Longitudinal elongated holes are formed on the guide rail in the positions corresponding to the shifter rods of the individual actuators, and allow the shifter rods to pass through and shift upwards and downwards. The two ends at the bottom edge of each stopper are chamfered. The width of the II-shaped opening of the guide rail is larger than the sum of width of the (N-1) stoppers, with a difference that is enough to enable the shifter rod of one actuator to shift upwards and downwards. The N is a positive integer. The interlocked changeover switch has the advantages that the interlocked changeover switch can interlock and switch in several power-supply circuits at the same level, with simple structure and convenience for installation and maintenance; simplifies the primary circuit; shortens the power-off time; improves the interlocking reliability; and improves the power supply security.
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Description

Technical field:

[0001] The invention relates to a circuit changeover switch, in particular to an interlocking changeover switch for more than three power supply circuits. Background technique:

[0002] At present, units or equipment that require relatively reliable power supply generally use power grid dual-circuit power supply. And more important units or departments have diesel generator sets, mobile power stations, UPS and other equipment as backups to obtain more reliable power supply protection, so it is necessary to select and convert these three or more power supply circuits. The currently known method is to use a dual power supply automatic conversion device to perform power conversion. What adopts in this device is a double circuit interlocking transfer switch.

[0003] The existing technology of using a double-circuit interlocking transfer switch to convert three or more power supply circuits has obvious shortcomings, mainly in:

[0004] 1. The existing double-...

Claims

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