ABB UFC760BE42 3BHE004573R1042 module

ABB UFC760BE42 3BHE004573R1042 module

ABB UFC760BE42 3BHE004573R1042 module

The reasons for electromagnetic compatibility issues caused by communication switching power supply operating under high voltage and high current switching conditions are quite complex. Electromagnetic interference of high-frequency signals from communication systems on switching power supplies; At the same time, switching power supplies can also interfere with communication or other electronic and electrical equipment due to their own circuit design, PCB wiring, and component performance. Among them, according to the coupling pathway, it can be divided into two types: conduction interference and radiation interference; According to the different forms of interference signals on the circuit, interference within the power system can be divided into two types: common mode interference and differential mode interference. Usually, any conducted interference signal on the power supply line can be expressed in two ways: common mode and differential mode interference.
In a switching power supply, the main power switch operates at high voltage, high current, or in a high-frequency switching mode. The waveform of the switching voltage and current is approximately a square wave under resistive load, and the wave signal contains rich higher-order harmonics. The spectrum of this higher-order harmonic can reach more than 1000 times the square wave frequency. Due to the voltage difference, electric fields can be generated, the flow of current can generate magnetic fields, and the high-frequency part of rich harmonic voltage and current can generate electromagnetic fields inside the equipment, causing instability in the internal operation of the equipment and reducing its performance. At the same time, due to the leakage inductance and distributed capacitance of the power transformer, as well as the unsatisfactory working state of the main power switch device, high-frequency and high-voltage peak harmonic oscillations are often generated when high-frequency is turned on or off. The higher harmonics generated by this harmonic oscillation are transmitted to the internal circuit through the distributed capacitance between the switch tube and the heat sink, or radiated into space through the heat sink and transformer.

EATON 7600C
EATON 92-02123-00
ABB LTC743CE22 3BHE013299R0022
ABB AE6003B GNT0116800R0001
ABB AM60002B GNT0112010R0001
ABB UFC765AE102 3BHE003604R0102
ABB MEM86-3×192/CMBMR3
ABB 5SYN-5100A-Z,V221 3BHB006717R0221
REXROTH CML40.2-SP-330-NA-NNNN-NW
BENTLY 3500/15 106M1079-0
ABB 07KT98 GJR5253100R0278
YOKOGAWA NFAI841-S00