Analysis of the causes of leakage in frequency converter

乱世煮酒论天下

Analysis of the causes of leakage in frequency converter [Copy link]

The inverter has a large leakage during use. What is the reason? Is it the leakage of the main topology circuit where the power enters or the high-frequency leakage of the switching power supply? Furthermore, is this leakage a direct leakage caused by the live part of the inverter to the non-live metal u part, that is, the GND of the power supply leaking to the PE of the non-live part of the PCB board, or is it inductive electricity or something else? Excessive leakage can cause danger to the human body. How can this problem be solved?

chunyang

This is hard to say, and specific information is needed for analysis. It does not necessarily mean that the inverter has leakage.

chunyang

For this type of equipment, the metal frame must be reliably connected to the ground. If the outer shell is energized, it only means that it is not reliably connected to the ground as required.

qwqwqw2088

The inverter has a large leakage during use. What is the cause of this?

Will the inverter that has just been installed from the factory leak electricity?

Therefore, it should be that during use, the performance of the insulation material deteriorates, long-term use causes poor grounding, etc., causing leakage, or it may be that the wiring grounding is wrong,,,,

Verifone

The key is to see whether the grounding is good or not, and how is the insulation. If there is a problem with the insulation layer, leakage is likely to occur.

beyond_笑谈

If the inverter leaks electricity, it is mostly because the metal shell is not grounded and insulated properly.