Working principle and wiring method of miniature circuit breaker
The working principle of miniature circuit breaker
The structure of the equipment is mainly composed of operating mechanism, contacts, protection devices (including various trippers), and arc extinguishing system. The main contacts of the miniature circuit breaker need to be manually or Electric way to close
The meaning of miniature circuit breaker model and the difference between D type and C type
Model meaning of miniature circuit breaker
I believe that many people will be distressed when selecting the circuit breaker, because there are too many letters and numbers in the model, it is really unclear what exactly represents which parameters.
ABB motor circuit breaker model parameters and application accessories
Overview of ABB Motor Circuit Breakers
ABB motor circuit breaker is a kind of protection device that can provide better and more complete protection for electrical systems and motors, and it also integrates motor control and protection functions.
The working principle and structure of permanent magnet governor
Working principle of permanent magnet governor
Usually the device is assembled by three main parts, one is the permeable magnet that is connected to the motor, and the other is the permanent magnet that is connected to the load, and there is a certain space between the two rotating parts. gap.
LED controller working principle and application characteristics
The working principle of LED controller
In fact, the development trend of this equipment is produced by following LED lights, so its arrival also means that the use range of LED lights has also been correspondingly expanded and functions have become diversified.
Principles of Siemens contactor selection method
Siemens contactor type and usage category
1. Use categories AC-3 and AC-4 (number of main contacts 3P, 3NO) :
● Domestic models are 3RT6, 3RT5, 3TS, 3TB, 3TF3-5 (production stop);
● Import models are 3RT10, 3RT20, 3RT12, 3TF6.
Siemens soft starter 3RW44 typical circuit diagram
Connection example of main circuit and control circuit ◆Siemens soft starter 3RW44 adopts standard circuit and can be controlled by buttons. The specific circuit diagram is as follows.
Siemens soft starter 3RW44 diagnostic message and warning group failure
Siemens soft starter 3RW44 diagnostics and messages ●Message: Check voltage Cause/solution: The power supply voltage has not been applied.
The working principle and selection of Siemens soft starter 3RW44
The working principle of Siemens soft starter 3RW44
The device has two anti-parallel thyristors on each phase, one thyristor for the positive half-wave and the other for the negative half-wave.