Power source switching device
A power supply switching and power supply technology, applied in circuit devices, emergency power supply arrangements, electrical components, etc., can solve the problems of meaningless power outage gaps, destroying power supply continuity, etc., and achieve the effect of small size, high reliability, and rapid conversion
Pending Publication Date: 2018-07-20
BEIJING JINGREN ELECTRICAL CO LTD
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Problems solved by technology
If this type of transfer switch is applied to low inductive load occasions, this power failure gap becomes meaningless, and instead destroys the continuity of power supply
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[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0032] like figure 1 and figure 2 As shown, the present invention provides a power switching device, which includes a switch 1, an overload protection switch 2 and an electronic controller 3, wherein: the switch 1 is electrically connected to at least two external power sources 4; the overload protection switch 2 is connected to all The changeover switch 1 is electrically connected; the electronic controller 3 detects the external power supply 4 and the over...
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The invention provides a power source switching device. The device comprises a switching switch, an overload protection switch and an electronic controller; the switching switch is electrically connected with at least two external power sources; the overload protection switch is electrically connected with the switching switch; and the electronic controller detects an external power source which is in a switching-on position and the overload protection switch and controls the switching switch to perform switching action according to the action protection state of the overload protection switchwhen the detected external power source undergoes power source deviation. With the power source switching device of the invention adopted, the short circuit accidents of a common power sources and astandby power source can be avoided, and rapid conversion between the common power source and the standby power source can be realized, and load side lines and equipment can be effectively protected.The power source switching device is high in reliability and small in size.
Description
technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a power switching device. Background technique [0002] The commonly used power switching device is also called a transfer switch. The transfer switch is an important electrical component in the field of low-voltage electrical appliances. It is mainly used for switching between the normal power supply and the backup power supply. When one power supply fails, the switch can switch to another power supply to ensure normal operation of the load. According to the requirements of architectural design specifications, the loads of grades 1 and 2 should be powered by two or more power sources. The transfer switch is the core of power switching and is used in fire protection, transportation, communication, metallurgy, chemical industry, textile, petroleum, coal mine And other important places that do not allow power outages. [0003] The existing derivative typ...
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IPC IPC(8): H02J9/06
CPCH02J9/06H02J9/068Y04S20/20Y02B70/30
Inventor 刘万里沈迪罗沈任庆庆
Owner BEIJING JINGREN ELECTRICAL CO LTD