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AC contactor working principle and internal structure explanation
The AC contactor is an electromagnetic AC contactor with normally open main contacts, three poles, and air as the arc extinguishing medium. Its components include: coil, short circuit ring, static iron core, moving iron core, moving contact, static contact, auxiliary nor...Read more -
Selection of AC contactor for controlling electric heating equipment
This type of equipment includes resistance furnaces, temperature adjustment equipment, etc. The wire-wound resistance elements used in the electric heating element load can reach 1.4 times the rated current. If the power supply voltage increase is considered, the current...Read more -
Selection principle of AC contactor
The contactor is used as a device for switching on and off the load power supply. The selection of the contactor should meet the requirements of the controlled equipment. Except that the rated working voltage is the same as the rated working voltage of the controlled equ...Read more -
Selection of Low Voltage AC Contactor in Electrical Design
Low-voltage AC contactors are mainly used to switch on and off the power supply of electrical equipment, which can control the power equipment from a long distance, and avoid personal injury when switching on and off the power supply of the equipment. The selection of AC...Read more -
How to solve the problem of unreliable contact of the contacts of the contactor
Unreliable contact of the contacts of the contactor will increase the contact resistance between the dynamic and static contacts, resulting in excessive temperature of the contact surface, making the surface contact into point contact, and even non-conduction. 1. The re...Read more -
Causes and treatment methods of abnormal suction of AC contactor
Abnormal pull-in of the AC contactor refers to abnormal phenomena such as the pull-in of the AC contactor is too slow, the contacts cannot be completely closed, and the iron core emits abnormal noise. The reasons and solutions for the abnormal suction of the AC contactor...Read more