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Some selection methods of the high voltage DC Contactor

Some selection methods of the high voltage DC Contactor

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  • Time of issue:2022-03-31
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(Summary description)The selection method of high voltage DC Contactor:
1. The type of high voltage DC Contactor should be selected according to the type of load current and the weight of the load, that is, whether it is an AC load or a DC load, whether it is a light load, a general load or a heavy load.

Some selection methods of the high voltage DC Contactor

(Summary description)The selection method of high voltage DC Contactor:
1. The type of high voltage DC Contactor should be selected according to the type of load current and the weight of the load, that is, whether it is an AC load or a DC load, whether it is a light load, a general load or a heavy load.

  • Categories:News
  • Author:
  • Origin:
  • Time of issue:2022-03-31
  • Views:0
Information

The selection method of high voltage DC Contactor:
1. The type of high voltage DC Contactor should be selected according to the type of load current and the weight of the load, that is, whether it is an AC load or a DC load, whether it is a light load, a general load or a heavy load.

high voltage DC Contactor
2. The rated current of the main contact of the high voltage DC Contactorcan be calculated according to the empirical formula. If the motor controlled by the DC contactor is frequently started, braked or reversed, the rated current of the main contact of the contactor is generally lowered and used.
3. The rated voltage of the main contact of the high voltage DC Contactor, the voltage marked on the nameplate of the contactor means that the rated voltage that the main contact can withstand is not the voltage of the attracting coil, and the rated voltage of the main contact of the high voltage DC Contactor should not be less than the rated voltage of the load during use.
4. Selection of operating frequency. The operating frequency refers to the number of times the high voltage DC Contactor is switched on and off per hour. When the on-off current is large and the on-off frequency is too high, the contacts will be seriously overheated, and even if the welding operation frequency exceeds the specified value, a quality high voltage DC Contactor with a large rated current should be selected.

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