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24/10/2022
NDM1 Series plastic enclosure circuit breakers

How to measure the quality of circuit board relays? How to wire it?

How to measure the quality of circu...

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22

The working principle of thermal relay

Click volume:918Add time:2021-04-22

Thermal relays are protective electrical appliances used for overload protection of motors or other electrical equipment and electrical circuits.

21

Precautions for using motor protector

Click volume:898Add time:2021-04-21

The purpose of selecting a motor protection device is to enable the motor to give full play to its overload capacity, avoid damage, and improve the reliability of the electric drive system and th...

20

The main function of the motor protector

Click volume:808Add time:2021-04-20

In addition to the general protection function, it also has functions such as self-start, communication start and close, undercurrent, overvoltage, undervoltage, three-phase current imbalance, an...

19

The difference between relay and contactor

Click volume:930Add time:2021-04-19

The working principle of relay and contactor is the same. The main difference is that the main contact of the contactor can withstand large current, while the relay contact can only withstand sma...

16

How the circuit breaker works

Click volume:737Add time:2021-04-16

Circuit breakers are generally composed of contact system, arc extinguishing system, operating mechanism, trip unit, shell and so on.

15

Types of relays

Click volume:766Add time:2021-04-15

There are many types of relays, mainly electromagnetic relays, thermal relays and time relays.

14

Reliability of the relay

Click volume:685Add time:2021-04-14

The influence of various conditions on the reliability of the relay

13

Symbol representation method of relay

Click volume:724Add time:2021-04-13

Usually, the same text symbols are marked next to the contacts and coils of the same relay, and the contact groups are numbered.

12

Relay test method

Click volume:721Add time:2021-04-12

In order to ensure the normal use of the relay, it is necessary to test the relay.

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