When a low-voltage power supply circuit is impacted by a lightning electromagnetic pulse, a lightning overvoltage signal is generated on the low-voltage power supply circuit and is applied to the lightning protection module.
The EMC strong electromagnetism suppression circuit limits the rising gradient and amplitude of the generated lightning overvoltage signal and transmits the processed signal to the signal acquisition circuit.
With this, the thunder surge current flowing through the lightning arrestor (1) is divided.
Provided is an earth leakage detection device capable of quickly distinguishing between an ordinary earth leakage and a thunder surge.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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