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22/04/2021
The working principle of thermal relay

The working principle of thermal relay

Thermal relays are protective elect...

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21/04/2021
Precautions for using motor protector

Precautions for using motor protector

The purpose of selecting a motor pr...

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20/04/2021
The main function of the motor protector

The main function of the motor protector

In addition to the general protecti...

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19

The difference between relay and contactor

Click volume:102Add 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:103Add 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:107Add 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:99Add time:2021-04-14

The influence of various conditions on the reliability of the relay

13

Symbol representation method of relay

Click volume:107Add 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:98Add 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:107Add 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.

09

Proximity electromagnetic relay

Click volume:106Add time:2021-04-09

It plays the role of automatic adjustment, safety protection, and conversion circuit in the circuit.