An AC voltage regulating energy-saving power supply bypass device

Abstract

Provided is an alternating-current voltage-regulation energy-saving power supply bypass device. The device comprises a power supply (1), a controller (2), a bypass driving unit (3), an intermediate relay (4), a contactor (5), a bypass contact (6), a change-over switch (7), a transformer (8), a voltage regulating unit (9), an electric interlocking contact (10), an alternating current input (11), an alternating current output (12), an alternating current common terminal (13) and a bypass indication (14); the transformer (8) is electrically connected with the bypass contact (6), the change-over switch (7), the voltage regulating unit (9), the alternating current input (11) and the alternating current output (12). According to the alternating-current voltage-regulation energy-saving power supply bypass device, bypass control is conducted on the high voltage side of the transformer, therefore, the control current is small, and the capacity of a needed electrical element is small; compared with a main circuit switching bypass in the prior art, the needed bypass electrical element is small in size, low in cost, high in reliability and easy to control.

Description

technical field

[0001] The invention relates to a power supply bypass device, in particular to an AC voltage regulating and energy-saving power supply bypass device, which belongs to the field of electrical technology. Background technique

[0002] Electronic and electrical products are composed of electronic components, components, and assemblies according to certain process requirements, and the failure of components is inevitable, which affects the reliability of the product. In power supply products, such as UPS or regulated power supply, in order to continue to provide emergency power to the load when the power supply product fails, it is usually necessary to bypass the power supply to the mains through a static switch, or switch to another power supply.

[0003] In some commonly used power bypass devices, two sets of AC non-contact switches or multiple contactors are usually used to switch between two power outputs. In this bypass mode, the current passing through the ...

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