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19/04/2021
The difference between relay and contactor

The difference between relay and contactor

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 small current. Both relays and contactors are electromagnetic switching appliances, but the former belongs to switching appliances working in the control loop, and the latter belongs to switching appliances working in the main loop.

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16/04/2021
How the circuit breaker works

How the circuit breaker works

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

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15/04/2021
Types of relays

Types of relays

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

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14

Reliability of the relay

Click volume:1309Add time:2021-04-14

The influence of various conditions on the reliability of the relay

13

Symbol representation method of relay

Click volume:1438Add 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:1314Add 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:1388Add 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:1381Add time:2021-04-09

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

07

Precautions for motor protector

Click volume:1278Add time:2021-04-07

The function of the motor protector is to provide comprehensive protection and control to the motor

06

What is the main function of the relay

Click volume:1523Add time:2021-04-06

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

29

Power monitoring background should have the function

Click volume:1388Add time:2020-09-29

In general, the microcomputer protection has a communication interface, the beginning is 485 communication interface, through the shielded twisted pair to communicate, and then gradually develope...

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