Electromagnetic assembly structure of alternating current contactor and alternating current contactor

Abstract

The invention relates to an electromagnetic assembly structure of an alternating current contactor and the alternating current contactor. The electromagnetic assembly structure of the alternating current contactor comprises a control module of the alternating current contactor, a double-coil winding and a coil framework for fixing the double-coil winding, wherein the coil framework is provided with a power terminal lug at the upper end where the double-coil winding attracts an armature of the alternating current contactor; the lower end opposite to the upper end of the coil framework is provided with a winding terminal lug; one end of the power terminal lug is coupled to the control module, and the other end is connected to a power input end; one end of the winding terminal lug is coupled to the control module, and the other end of the winding terminal lug is connected to the double-coil winding. As the power input end is coupled to the control module through the power terminal lug, the wiring is convenient and the assembly efficiency is improved through the double-coil winding coupled by the winding terminal lug; meanwhile, the power terminal lug and the winding terminal lug are arranged on the upper end and the lower end of the coil framework, so that the structure is compact, and the input end and the output end are separated; and the risk of a short circuit caused by the wrong wiring is reduced.

Description

technical field [0001] The invention relates to the field of power distribution, and more specifically, relates to an electromagnetic assembly structure of an AC contactor and the AC contactor. Background technique [0002] In the field of power distribution, it is often necessary to use contactors for frequent power breaking / closing. For electromagnetically controlled contactors, continuous power supply is required when they are closed to keep the coil working and pull the contacts of the contactor. The contactor The current required at start-up is significantly greater than the current required to maintain the coil. If the coil at start-up is used to keep the contactor closed, it will cause obvious waste of electric energy. Therefore, the existing contactors generally use double windings with auxiliary switches to save energy. Electromagnetic structure, that is, a large coil is used when pulling in, and it is switched to a small coil to maintain the pulling state after pul...

AI Technical Summary

Problems solved by technology

[0002] In the field of power distribution, it is often necessary to use contactors for frequent power breaking / closing. For electromagnetically controlled contactors, continuous power supply is required when they are closed to keep the coil working and pull the contacts of the contactor. The contactor The current required at start-up is significantly greater than the current required to maintain the coil. If the coil at start-up is used to keep the contactor closed, it will cause obvious waste of electric energy. Therefore, the existing contactors generally use double windings with auxiliary switches to save energy. Electromagnetic structure, that is, use a large coil when pulling in, and switch to a small coil to maintain the pulling state after pulling in

In order to realize double-winding switching, multiple wires need to be drawn from the winding to connect to the controller, and an external power supply is also required to supply power to the controller and the winding. The wiring is complicated, and workers are easy to connect the wrong wires during production, resulting in the risk of short circuit.

At the same time, the existing double-winding energy-saving electromagnetic structure with auxiliary switch often makes the switch on the circuit board. This assembly structure not only requires an additional independent space for the switch on the circuit board, which takes up a lot of space, but also affects the quality of the circuit board. The packaging requirements are very high, and the auxiliary switch cannot be replaced independently, which shortens the service life of the coil and greatly increases the difficulty of the process

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