The 1000V DC Contactor manufacturer tells you that in terms of working principle and structure, the two types of DC and AC contactors are basically similar, and they are also composed of three important parts: the contact system, the arc extinguishing mechanism and the electromagnetic mechanism. However, the difference is that by flowing a DC current through the iron core of the DC contactor, it does not cause eddy current, hysteresis loss, or heat generation. Let's understand the working principle of 1000V DC Contactor together!

In addition, the 1000V DC Contactor is generally wound with a coil and made into a long and thin cylindrical shape, which can directly contact the iron core and exert a heat dissipation function against temperature. Since the arc extinguishing performance of the DC contactor is relatively low, the arc deflection device with strong arc extinguishing ability is generally used to perform the arc extinguishing work.
The 1000V DC Contactor is mostly used when the DC circuit needs to be connected or cut off remotely, and the motor needs to be frequently started, stopped, reversed, and reversely connected to the DC for braking. It is mainly used to connect and cut off the lifting electromagnet, solenoid valve, The role of the electromagnetic coil of the clutch. The electromagnetic mechanism of the 1000V DC Contactor working principle is assembled using iron core, coil and armature. DC power flows through the coil, so under normal working conditions, there will be no eddy current phenomenon in the iron core, and no heat and iron will occur. damage.
After the 1000V DC Contactor coil is energized, the coil current generates a magnetic field, and the electromagnetic attraction generated by the fixed iron core attracts the movable iron core, thereby driving the contacts. The normally closed contact is disconnected, and the normally open contact is closed, and the two are linked. After the power of the coil is cut off, the electromagnetic attraction disappears, the armature is released by the release spring, and the contact returns to its original state. The normally open contact is open and the normally closed contact is closed. The working principle is the same as that of the AC contactor, but the difference is that the attracting coil of the AC contactor is powered by the AC power source, and the attracting coil of the DC contactor is powered by the DC power source.
Since the coil flowing to the 1000V DC Contactor is direct current, the direct current has no instantaneous value. The effective value is equal at any time and there is no zero-crossing point. Therefore, it does not need to be installed on the armature of the DC contactor to prevent low zero-crossing voltage. The short-circuit of the phenomenon such as the small adsorption force of the contactor and the increase of the vibration sound of the contactor.
In addition, because the core of the 1000V DC Contactor maintains a constant magnetic flux principle, there is no need to use a short-circuit ring on the pole surface. Add non-magnetic spacers between. Most of the DC contactors with a current range of more than 250A use series double winding coils.
The above is the working principle of 1000V DC Contactor, if you need to know more, please feel free to contact us!