A rotatable AC contactor

Abstract

The invention relates to a rotational alternating current contactor. The rotational alternating current contactor comprises a rectangular wood frame, normally-open static contacts, normally-closed static contacts and movable contacts are arranged on the rectangular wood frame in a corresponding mode, the normally-closed static contacts correspond to movable rods, an upper iron core assembly is arranged above the rectangular wood frame, a lower iron core assembly is arranged below the rectangular wood frame, the rectangular wood frame is correspondingly arranged on the upper iron core assembly and the lower iron core assembly through armatures, rotational mechanisms are arranged on the two sides of the rectangular wood frame respectively, rotating rods are arranged on the two sides of the rectangular wood frame respectively, and the rotating rods correspond to the rotational mechanisms. When an excitation part on one side breaks down and cannot work normally, the normally-closed static contacts are moved to the two sides firstly to not hinder rotation of the rectangular wood frame, the rectangular wood frame is controlled through the rotating rods to rotate the armatures by 180 DEG C, the other excitation iron core set is connected, and thus the contactor con work normally; overhaul and replacement time is shortened, the working efficiency is improved, and working stability is ensured.

Description

technical field [0001] The invention relates to the technical field of AC contactors, in particular to a rotatable AC contactor. Background technique [0002] AC contactors are widely used in current electrical systems, mainly used for power breaking and control circuits. It uses the main contact to open and close the circuit, and the auxiliary contact to execute the control command. The control principle of the AC contactor is to magnetize the iron core through multiple excitation currents, and then the iron core attracts the control contacts with armatures. The external power supply varies from 220V to 380V, and the requirements for current are also different. During normal use, often It is necessary to frequently connect and disconnect the contacts to achieve the required control requirements. If the current is too large or other changes in the circuit system may cause the excitation coil to burn out and affect the normal operation of the circuit system, the common solut...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a rotatable AC contactor. When one side of the excitation part fails and cannot work normally, the armature can be rotated 180 degrees by rotating the control rectangular frame to connect another group of excitation core groups. Make the contactor work normally, while using two sets of composite springs to ensure that the contactor parts are not affected during the rotation

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