APF100 Three-Phase Four-Wire Power Supply System And Electric Control Box – 3D Model SolidWorks

APF100 three-phase four-wire power supply system and electric control box have been produced and put on the market. They are for personal reference only. Please do not use them for commercial purposes. They include all parts and device selection. The active power quality filter and the heat sink have been subjected to finite element analysis, and the product is stable.
At present, most of my country adopts a three-phase four-wire low-voltage power supply system, that is, a 380V/220V neutral point directly grounded low-voltage power supply system. This power supply system has three phase lines (live wires) A, B, C, and a zero line. The reason why this zero line is called a zero line is because it is derived from the neutral point of the secondary side of the transformer, and the neutral point of the secondary side is directly grounded and connected to the zero potential of the earth, so it is called a zero line. In the three-phase four-wire low-voltage power supply system, it is both a working zero line and a protective zero line. It is now called a PEN line, where PE is the protective zero line and N is the working zero line. Together, they are the PEN line. The PEN line indicates that the working zero line also serves as a protective zero line, commonly known as “zero-ground integration”.