Knowledge

2. Whether the C-type circuit breaker is suitable for the motor circuit We all know that C-type micro-breaks are used in common circuits, such as lighting circuits. D-type circuit

1. Selection of A, B, C, and D types of miniature circuit breakers There are four general tripping characteristics of circuit breakers: A, B, C, and D. So how do we choose? 1) A-ty

Overcurrent Protection: We mentioned earlier that overcurrent is a state. When overcurrent occurs, it is often smaller than short-circuit current, and it is within six times. Usual

Every electrical device used in the power grid or in our daily life will have a rated power. When the power of the device is higher than the rated power, we call it to overload. Li

The air switch is one of the electrical components that ordinary users come into contact with the most, so many friends began to wonder: the name is so strange, why is it named &qu

Modbus communication rotocol Modbus protocol is a common language applied to electronic controllers. Through this protocol, controllers can communicate with each other, controllers

3. RS485 has a two-wire system and four-wire system. The four-wire system can only realize point-to-point communication, which is rarely used now. The two-wire system is a bus topo

In the fields of industrial control, power communication, and smart instruments, serial communication is usually used for data exchange. The RS232 interface was initially adopted.

Remote Terminal Unit (RTU) RTU is a remote measurement and control unit, which is responsible for monitoring and controlling on-site signals and industrial equipment. Compared with

Distribution Transformer Supervisory Terminal Unit (TTU) TTU monitors and records the operating conditions of distribution transformers, and calculates voltage RMS, current RMS, ac

Feeder Terminal Unit (FTU) The FTU is a switch monitoring unit installed next to the feeder switch. These feeder switches refer to outdoor pole switches, such as circuit breakers,

The distribution network automation system is generally composed of the following levels: distribution main station, distribution substation (permanently located in the substation,