AC contactor

Abstract

The invention provides an AC contactor. The AC contactor comprise a bottom rack, a static iron core, a movable piece, a static contact, a coil and an elastic piece, wherein the static iron core is arranged on the bottom rack, the movable piece is provided with the movable iron core and a movable contact point, the static contact is arranged vertically opposite to the movable contact, the coil is wound around the static core, the elastic piece is arranged between the static iron core and the movable iron core, the static iron core is arranged vertically opposite to the movable piece, the contactor also comprises a controller, a reading device and a mark piece, the reading device is connected with the controller, the mark piece is arranged right opposite to the reading device, the reading device is arranged on the movable piece, the mark piece comprises a plurality of position indication units, each position indication unit is vertically and fixedly arranged on the bottom rack, and the reading device is used for acquiring height of a real-time position by reading the corresponding position indication unit. By the AC contactor, the elasticity of the elastic piece can be randomly mastered, maintenance or replacement is timely facilitated when the elastic force of the elastic piece is insufficient, and normal application of the AC contactor can be ensured.

Description

technical field [0001] The invention relates to the technical field of electrical equipment, in particular to an AC contactor. Background technique [0002] A contactor is an electrical appliance that uses a current flowing through a coil to generate a magnetic field to close the contacts to control the load. It is divided into AC contactors and DC contactors. A conventional electrical contactor consists of two functional parts: a contact part and an actuation part. The contact part is the load current carrying part of the contactor, which is made of low resistance metal. Generally, the contact part maintains its original state due to gravity or other forces. The actuation member provides the driving force to switch the contact member to its opposite state and maintains the contact member in the opposite state by counteracting gravity or other force. Typically, the actuation member is energized by an input current. After the current is removed, the actuation member is de...

AI Technical Summary

Problems solved by technology

After the spring is used for a long time, its elastic force will gradually weaken or even disappear. If the elastic force of the spring cannot be grasped in time, when the elastic force of the spring is not enough to offset the gravity of the actuating part, it is likely to affect the normal use of the contactor. Serious safety accidents may even occur

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