PC-grade large-current dual-power automatic change-over switch

Abstract

The invention provides a PC-level large-current dual-power-supply automatic change-over switch, which comprises electromagnet driving mechanisms and a contact arc extinguishing mechanism, wherein the two electromagnet driving mechanisms are symmetrically arranged for three-section working, only one electromagnet driving mechanism is needed for two-section working, a driving electromagnet is provided with a thrust coil and a tension coil, a movable iron core pushes or pulls a gear transmission lever to perform action conversion, a contact four-connecting-rod mechanism is arranged on an action rotating shaft of a common power supply and an action rotating shaft of a standby power supply, an action interlocking device is arranged between the two action rotating shafts so as to obtain quick and large transmission torque on the action rotating shafts of the dual-power-supply automatic change-over switch, and due to the action of the four-connecting-rod mechanism and the interlocking device, stable work of the dual power supply under various working conditions can be ensured, so that the dual-power-supply automatic change-over switch with a simple structure and stable performance is suitable for power supply change-over under large current.

Description

[0001] The invention relates to a low-voltage electrical appliance, in particular to a PC-level high-current dual-power automatic transfer switch. Background technique [0002] Dual power automatic transfer switch is a commonly used low-voltage electrical appliance, which is often used to switch between two power sources, so as 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. . Generally, the dual power automatic transfer switch has a lever action mechanism and a contact arc extinguishing mechanism. Due to the limitation of the structure of the lever action mechanism and the contact arc extinguishing mechanism of the traditional PC-level dual power automatic transfer switch, the transmitted action torque is small, and at the same time The action speed of the dual-power automatic transfer switch cannot meet the requirements during power conversion. When the ...

AI Technical Summary

Problems solved by technology

Generally, the dual power automatic transfer switch has a lever action mechanism and a contact arc extinguishing mechanism. Due to the limitation of the structure of the lever action mechanism and the contact arc extinguishing mechanism of the traditional PC-level dual power automatic transfer switch, the transmitted action torque is small, and at the same time The action speed of the dual-power automatic transfer switch cannot meet the requirements during power conversion. When the dual-power automatic transfer switch performs power conversion, especially when the high-current power conversion is performed, it is not enough to push the contacts to move quickly so that the dual-power automatic transfer switch can be carried out smoothly. Power conversion, while working stability needs to be improved

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