Double-power-supply automatic change-over switch with warning devices

Abstract

The invention discloses a double-power-supply automatic change-over switch with warning devices. The double-power-supply automatic change-over switch comprises a bottom board, a main circuit breaker, a back-up circuit breaker and an operating mechanism, wherein the main circuit breaker and the back-up circuit breaker are arranged on the bottom board, and the operating mechanism is used for change-over between the main circuit breaker and the back-up circuit breaker. A surface cover is arranged at the upper end of the bottom board, warning device mounting windows are formed in the left and right sides of the surface cover respectively, mounting grooves are formed in the warning device mounting windows, an auxiliary contact and a warning contact are arranged in each mounting groove, each auxiliary contact comprises an upper auxiliary contact binding post and an auxiliary contact plugging portion below the auxiliary contact binding post, and each warning contact comprises an upper warning contact binding post and a warning contact plugging portion below the warning contact binding post. The double-power-supply automatic change-over switch with the warning devices has the main advantages of simple structure, convenience in use, mounting, demounting, detection and debugging, reasonableness, compactness, excellent performance and high security coefficient.

Description

technical field [0001] The invention relates to the field of electrical appliances, in particular to a double power supply automatic transfer switch with an alarm device. Background technique [0002] Dual-power automatic transfer switch is very common in daily life. The known dual-power automatic transfer switch is composed of two circuit breakers with accessories, a transmission mechanism controlled by electric and manual modes, and a controller. . When working, two circuit breakers switch the two power sources, and ensure that only one circuit breaker is in the closed state, so as to continuously supply power to important occasions. [0003] The auxiliary contact and alarm contact in the plastic case circuit breaker in the original dual power automatic transfer switch are installed inside the product. If you want to replace the auxiliary contact and the alarm contact, you need to remove all the face cover parts, mechanism parts and plastic shell circuit breaker cover of...

AI Technical Summary

Problems solved by technology

If you want to replace the auxiliary contact and alarm contact, you need to remove all the cover parts, mechanism parts and plastic case circuit breaker cover of the dual power automatic transfer switch, which is very inconvenient to install.

The original auxiliary contact and alarm contact are combined together. There are many wires welded on the auxiliary contact and alarm contact. There are special terminal blocks to connect with them. The terminal blocks are respectively installed on the left side of the normal and standby power supplies for user wiring. , After installation, professionals need to re-adjust the product, which brings inconvenience to users

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