Dc contactor coil structure features

Publisher： Apollo / 2021-07-06/ Views：988

AC contactor coil structure characteristics:

Coil tube is a key component of DC contactor, and its quality directly affects the reliability of electrical equipment. Traditionally, according to the structural characteristics of electrical production and manufacturing, the coil is divided into two categories: electromagnetic coil and large current coil. Solenoid coil is made of special cable wound, it includes the working voltage coil and some small current coil.

The electrical coil usually refers to the electromagnetic coil, which accounts for the vast majority in the production and manufacturing. High current coil is made of thick bare copper core wire, according to the current size, coil turns are very few, its production and manufacturing processes are completely different.

According to whether the skeleton is divided, it can be divided into coil with skeleton and coil without skeleton. The coil with skeleton is made of plastic, coil skeleton is mostly made of plastic, skeleton shape has ring and square, according to the basic, AC electromagnetic system software to use ring skeleton. The coils used in the magnetic circuit components of ordinary DC contactors are all made of enameled wire with skeleton.

In general, the DC contactor selection of generality, can be assembled with at least one component of the consumer must use the contact point contact point of the necessary contact mode (normally open, normally closed and transformation); The contact point of this product series has a high breaking working voltage, and the cross blowing electromagnetic field is used to extinguish the arc. The maximum breaking working voltage can be 220VDC. Suitable for programmable power supply or UPS power system software, electric forklift series contact point mechanical structure.

What are the advantages of AC contactor electromagnetic induction system software?

Efficacy of contactor: the key work of AC contactor is to connect and disconnect the power circuit of high-power electrical appliances. Secondary contacts are often used to reduce the risk of electrical isolation caused by the conduction moment and increase the service life of the main contact. Auxiliary contacts are easy to replace, the price is cheap. (main and auxiliary contact split type time difference is small, so it is not easy to harm the work of high-power electrical appliances. DC contactor is one of the most widely used bottom pressure control apparatus in electric drive and process control system. As an executive component, it is used to switch on, break the circuit, or often operate the motor and other machinery and equipment. It is composed of moving main, static contact, arc extinguishing cover, dynamic and static transformer core, auxiliary tool contact, bracket shell and so on.

After the electromagnetic coil is inserted, the moving transformer core is pulled together under the magnetic effect, and the moving contact and the static contact are contacted by the rod drive system immediately and enter the power supply circuit. When the electromagnetic coil is powered off, the moving transformer core is automatically reset under the action of reset yellow-color, alias is released, contacts are separated, and the power supply circuit is opened.