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The 300A DC Contactor manufacturer will show you: the selection method of DC contactor

The 300A DC Contactor manufacturer will show you: the selection method of DC contactor

  • Categories:Industry News
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  • Time of issue:2021-08-24
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(Summary description)The 300A DC Contactor manufacturer tells you that the DC contactor adopts a modular design, which can assemble the number of contacts required by the customer and the contact form (normally open, normally closed and conversion) required by the customer with the least parts.

The 300A DC Contactor manufacturer will show you: the selection method of DC contactor

(Summary description)The 300A DC Contactor manufacturer tells you that the DC contactor adopts a modular design, which can assemble the number of contacts required by the customer and the contact form (normally open, normally closed and conversion) required by the customer with the least parts.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-08-24
  • Views:0
Information

The 300A DC Contactor manufacturer tells you that the DC contactor adopts a modular design, which can assemble the number of contacts required by the customer and the contact form (normally open, normally closed and conversion) required by the customer with the least parts. DC contactor What is the selection method of, the following 300A DC Contactor manufacturer will tell you to take you to take a look.

customized 300A DC Contactor company
The selection method of DC contactor:
1. The 300A DC Contactor manufacturer tells you to choose the type of DC contactor. The type of 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.
2. The 300A DC Contactor manufacturer tells you the rated current of the main contact of the DC contactor. The rated current of the main contact of the DC contactor can be calculated according to the empirical formula. IN main contact ≥ PN motor/(1~1.4) UN motor if DC contactor The controlled motor starts, brakes or reverses frequently, and generally the rated current of the main contact of the contactor is reduced by one level.
3. The 300A DC Contactor manufacturer tells you the rated voltage of the main contact. The voltage marked on the contactor nameplate refers to the rated voltage that the main contact can withstand, not the voltage of the attracting coil. The rated voltage of the main contact of the contactor should not be Less than the rated voltage of the load.
4. Selection of operating frequency The operating frequency refers to the number of times the contactor is turned on and off per hour. When the on-off current is large and the on-off frequency is too high, it will cause serious overheating of the contacts and even welding. The 300A DC Contactor manufacturer tells you the operating frequency If it exceeds the specified value, a DC contactor with a rated current one level higher should be used.
5. The 300A DC Contactor manufacturer tells you the choice of the rated voltage of the coil. The rated voltage of the coil is not necessarily equal to the rated voltage of the main contact. When the circuit is simple and there are few electrical appliances, you can directly choose 380V or 220V. Coils with voltages of 24V, 48V or 110V (in 1964 international regulations are 36V, 110V, or 127V) are available.

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