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21/10/2022

Relay manufacturers for everyone to popularize the knowledge of relays

Role of the relay:Relays use a small current to control a large current for automatic adjustment, safety protection, and conversion circuits. In order to allow more friends to understand the related problems of relays, here is a popular science by relay manufacturers.

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13/10/2022
circuit board relay

What are the methods for measuring the quality of circuit board relays?

If the resistance of circuit board relay is large or unstable, it means that the contact is poor; the resistance of the normally open contact and the moving point is infinite.

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22/04/2021
The working principle of thermal relay

The working principle of thermal relay

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

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21

Precautions for using motor protector

Click volume:1799Add 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:1708Add 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:1937Add 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:1623Add 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:1647Add 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:1501Add time:2021-04-14

The influence of various conditions on the reliability of the relay

13

Symbol representation method of relay

Click volume:1865Add 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:1505Add time:2021-04-12

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

10

Main product technical parameters of relay

Click volume:1619Add time:2021-04-10

The main product technical parameters of the relay are rated working voltage, DC resistance, pull-in current, release current, contact switching voltage and current.

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