【Daily Question】Sulfur Technical Version 20180313
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To increase the popularity of this section, a daily quiz activity has been launched. The purpose of this activity is: “Learn a little bit every day, and make significant progress over ten days.” I hope everyone will participate actively; by learning and making progress, they can also easily bring wealth home :) . Participation: Prize of 5 Wealth ； Correct answer: Reward of 10 wealth points ； Note: For questions from that day, answering correctly earns 10 wealth points; answering the next day earns 5–8 wealth points. This post is valid for 48 hours. https://bbs.hcbbs.com/static/image/hrline/4.gif True or False: The shorter the electrical distance between the arrester and the equipment it protects, the better.
Yes. According to GB50057-2010, the total length of the lightning arrester and the grounding wire together should not exceed 50 centimeters ； Mainly, if the length of the circuit is too great, the inductance induced in the circuit by lightning current or induced lightning current becomes very high; as a result, the arrester cannot achieve its desired effect. The idea that the closer is better is relative; lightning surges arrive within a few nanoseconds, and if the distance is too great, the arrester will not be able to function