The 600A DC Contactor manufacturer tells you that the DC contactor is an automated control appliance. The 600A DC Contactor manufacturer tells you that the DC contactor is mainly used to frequently connect or disconnect AC and DC circuits. It has a large control capacity and can be operated remotely. It can be used with relays to achieve timing operation, interlocking control, various quantitative controls and voltage loss. And under-voltage protection, it is widely used in automatic control circuits. Its main control object is the motor. It can also be used to control other electrical loads, such as electric heaters, lighting, electric welding machines, capacitor banks, etc.

(1) Selection of DC contactor:
The 600A DC Contactor manufacturer tells you that the rated current of the main circuit contact should be greater than or equal to the rated current of the controlled device, and the contactor that controls the motor should also consider the starting current of the motor. In order to prevent the main contact of the frequently operated contactor from ablating, the rated current of the frequently operated contactor can be reduced.
The manufacturer of 600A DC Contactor tells you that the electromagnetic coil of the contactor has a rated voltage of 36V, 110V, 220V, 380V, etc. The electromagnetic coil is allowed to be used within the range of 80% to 105% of the rated voltage.
(2) Operation and maintenance of DC contactor:
①Inspection items during operation:
1) Whether the load current passed is within the rated value of the contactor;
2) Whether the opening and closing signal indication of the contactor is consistent with the circuit state;
3) Whether the running sound is normal, whether there is a discharge sound due to poor contact;
4) Whether the electromagnetic coil is overheated, and whether the short-circuit ring of the electromagnet is abnormal.
5) Whether the arc extinguishing cover is loose or damaged;
6) Whether the auxiliary contacts are burnt;
7) Whether the transmission part is damaged;
8) Are there any unfavorable operating factors in the surrounding operating environment, such as excessive vibration, poor ventilation, and excessive dust.
Maintenance:
The 600A DC Contactor manufacturer tells you that when the DC contactor is performing maintenance work on electrical equipment, the contactor should be maintained together.
External maintenance:
1. The 600A DC Contactor manufacturer tells you to clean the external dust;
2. Check whether the fasteners are loose, especially the conductor connection part, to prevent the contact from loosening and heating;
3. Maintenance of contact system:
4. Check whether the moving and static contact positions are aligned and whether the three phases are closed at the same time. If there is any problem, adjust the contact spring;
5. Check the wear degree of the contact, the wear depth should not exceed 1mm, the contact is burned, and it must be replaced in time when the welding is off; if it is slightly burned, it generally does not affect the use. Sandpaper is not allowed when cleaning the contacts, and a plastic file should be used;
6. The 600A DC Contactor manufacturer tells you to measure the insulation resistance between phases, and the resistance is not less than 10MΩ;
7. The manufacturer of 600A DC Contactor tells you to check whether the auxiliary contact is flexible, the stroke of the contact should meet the specified value, check whether the contact is loose or fall off, and if any problem is found, it should be repaired or replaced in time.