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Basic knowledge about grouding
Nov 23 , 2021
When a lightning wave hits a tower or lightning conductor, most of the lightning current will flow into the ground through the grounding device. If the grounding resistance is too high, the lightning current will generate a very high voltage on the top of the tower, causing the insulator to flash over and cause the line to trip. In recent years, power outages caused by lightning strikes have...
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Low-voltage surge protectors was approved by IEC
Dec 07 , 2021
At the 2021 annual meeting of the International Electrotechnical Commission IEC/SC37A "Low-Voltage Surge Protector (SPD)" held a few days ago, my country’s first international standard proposal in the field of IEC low-voltage surge protectors was approved. The standard name and series number is: IEC TS 61643-05“Low voltage surge protective devices-Part 05: Monitoring device of Surge protecti...
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