Miniature dual-power supply automatic conversion switch

Abstract

The invention relates to a miniature dual-power supply automatic conversion switch. The miniature dual-power supply automatic conversion switch comprises an automatic conversion device, a normally-used circuit breaker and a back-up circuit breaker, wherein the automatic conversion device comprises a shell, intelligent control circuit boards, mechanism racks, a motor, a bevel gear and two groups of transmission assemblies, each group of transmission assembly comprises a transmission gear, a cam and a conversion arm, the transmission gear is linked with the bevel gear, the cam is linked with the transmission gear, the conversion arm is rotatably arranged on the mechanism rack, corresponding to the cam and used for driving a handle of the normally-used circuit breaker/a handle of the back-up circuit breaker, the cam rotates with the transmission gear so as to drive the conversion arm to rotate, a breaking piece is movably arranged on the mechanism racks and is corresponding to a part between the transmission gear and the cam, the transmission gear and the breaking piece are freely matched in a closing direction and are matched in a linkage way in a breaking direction, an interlocking mechanism is arranged in the shell and is matched with the conversion arm in a linkage way, and the intelligent control circuit boards are used for controlling the motor to positively rotate, reversely rotate and stop. The miniature dual-power supply automatic conversion switch has the advantages of compact structure, high reliability, safety, reliability and small size and is convenient to install.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a miniature dual-power automatic transfer switch. 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. Many industries and departments have very high requirements on the reliability of power supply. In order to ensure the continuity of power supply, many important occasions use dual-power automatic transfer switches for power supply. As an essential device for power switching, dual-power automatic transfer switches The application requirements are more and more extensive, and the technical performance requirements are also getting higher and higher. The existing autom...

AI Technical Summary

Problems solved by technology

The existing automatic transfer device of the dual-power automatic transfer switch has an unreasonable structural design and a complex structure, which leads to a large volume of the entire dual-power automatic transfer switch, and easily causes the circuit breaker switch to not be turned on and off, which seriously affects the The working stability of the dual-power automatic transfer switch will cause the failure of the electrical interlock and mechanical interlock. In severe cases, the normal and standby power supplies will run in parallel, which will cause burnout of the load equipment and pose a safety hazard.

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