Zero line current eliminator

• 作者:
• 來源:
• 日期: 2018-02-09

Great harm: for LED display screen, the main cause of excessive zero line current is the third harmonic. It is a huge hidden danger that the current on the zero line exceeds the current on the phase line. Because there is no over-current protection device on the zero line, there will be no protection. Therefore, the zero line has a very serious heating, which will directly cause a fire if the time is long. It also seriously affects the service life of transformers and cables

Main causes: the main cause of the excessive zero line current is the third harmonic, which is generated by the switching power supply (220 to 5V), followed by the dynamic picture of the LED display screen, which will generate the zero line current

For example, if the live line current is 500A, the zero line current can reach 1000A. This is not allowed for any transformer, and the ground terminal will be heated and aged, forming a fire hazard for a long time

Of course, the zero line current eliminator will be more expensive than the electric box, its volume is large, but also has weight.

The zero line current is too large, which does a lot of harm. The large screen installer should pay great attention to it. If the zero line current is eliminated in large proportion, the cable will not overheat, the transformer zero line will not overheat, and the electric energy will be saved, and the hidden danger of fire will be eliminated. It is important that the screen body acceptance will pass.