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DC contactor model connection and working principle

Release time:

2022-06-14

The DC contactor model is a contactor whose iron core is controlled by DC. Its load can be DC or AC. The iron core of the DC contactor is different from the iron core of the AC contactor. AC and DC contactors can be selected according to the working voltage and current of the line. Let's introduce the working principle and function of the wire type DC contactor and the DC contactor.

DC contactor model connection and working principle

DC contactor model is a contactor whose iron core is controlled by DC. Its load can be DC or AC. The iron core of the DC contactor is different from the iron core of the AC contactor. It has no eddy current, so it is generally made of low carbon steel or industrial pure iron. Because the DC contactor is attracted by the DC coil, it will not produce the impact of the starting current, and will not produce the phenomenon of violent impact of the iron core, so it has a long service life and is suitable for frequent starting and stopping occasions. AC and DC contactors can be selected according to the working voltage and current of the line. Let's introduce the working principle and function of the wire type DC contactor and the DC contactor.

1. How to connect the DC contactor model?

1. The contactor only has the main power supply and the coil power supply. The negative pole of the coil power supply is connected to the positive end of the coil, the switch is connected to the other end, and the main line is connected to the motor.
2. DC motor is a motor driven by direct current. When the DC motor is working: when the coil is energized, a magnetic field is generated around the rotor, and the left side of the rotor is pushed away by the left side of the magnet, and is attracted to the right side, thereby rotating. The rotor continues to rotate by inertia. When the rotor is in the horizontal position, the current transformer reverses the direction of the current in the coil, and the magnetic field generated by the coil simultaneously reverses, so that this process is repeated.
2. The working principle and function of DC contactor model
1. The working principle of DC contactor model
When the contactor coil is energized, the coil current will generate a magnetic field, which makes the static iron core generate electromagnetic attraction to attract The moving iron core and drive the contact action: the normally closed contact is opened, the normally open contact is closed, and the two are connected. When the coil is de-energized, the electromagnetic attraction disappears, and the armature is released under the action of the release spring to restore the contact: the normally open contact is disconnected, and the normally closed contact is closed. The role of
2, DC contactor model
DC contactor is mainly used for remote connection and disconnection of DC circuits, and is also used for frequent starting, stopping, reversing and anti-braking of DC motors.
DC contactor refers to the contactor used in the DC circuit, mainly used to control the DC circuit (main circuit, control circuit and excitation circuit, etc.). The core of the DC contactor is different from the core of the AC contactor. It has no eddy current, so it is generally made of low carbon steel or industrial pure iron. Because the DC contactor is attracted by the DC coil, it will not produce the impact of the starting current, and will not produce the phenomenon of violent impact of the iron core, so it has a long service life and is suitable for frequent starting and stopping occasions. AC and DC contactors can be selected according to the working voltage and current of the line.

Zhejiang Aokai Electric Co., Ltd. is a high-tech enterprise specializing in the design, research and development, manufacturing and sales of high and low voltage DC contactors, connectors and DC contactors. Adhere to the talent-oriented, long-term deep cultivation in the DC contactor, power switch, connector research and development and production areas.