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...

  In order to formulate relevant standards for the lightning protection grounding resistance of urban rail transit, it is necessary to further carry out actual measurement research on the grounding resistance of urban rail transit lines, count more test samples, deepen theoretical analysis, and summarize the test methods and test limits requirements for urban rail transit.    W...

Neutral connection: The neutral point of generators and distribution transformers is called the zero point, and the line drawn from the neutral point is called the neutral line. The metal shell of electrical equipment connected to the neutral line is called Neutral connection. Working grounding: The neutral point of the transformer of the power supply system is directly grounded as the w...