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Miniature circuit breaker or switch shall be installed in front of SPD
Miniature circuit breaker or switch shall be installed in front of SPD Q: Recently, I saw the wiring mode of the miniature circuit breaker installed in front of the surge protector. When it is connected in parallel with the power distribution, some are connected to the upper end of the circuit br...Read more -
Why does thunder love to “visit” the football field
The football field is generally built in an open and flat area. Strong winds are easy to “drive straight in”, pass through here smoothly, and quickly rub with the football field to produce a lot of static electricity. The blowing clouds often carry a large amount of charge. The sky an...Read more -
Is the socket switch of netizen’s computer off or is it struck by lightning
Some netizens turned off the switch of the computer socket line, but they were still struck by lightning. In this regard, relevant experts pointed out that if the computer does not install a lightning arrester on the power line and telephone line, it is necessary to unplug the power line and tele...Read more -
Why is lightning so strong?
Why is lightning so strong? There are three main reasons: first, the subtropical high. Since late September, the subtropical high has been entrenched over Chengdu, making Chengdu in the southwest warm and humid airflow at the edge of the subtropical high, resulting in high temperature, high humid...Read more -
Meteorological and insurance experts suggest: deal with lightning disaster rationally
On July 18, the article “experts say lightning protection in Thunderstorm prone season” published in Shenyang daily attracted the attention of readers. In recent days, many readers have called our service hotline 81053456 to inquire about lightning protection. More readers ask: what s...Read more -
Be careful when the solar water heater is struck by thunder in rainy days
The solar water heater commonly used on the roof of residential buildings may have certain potential safety hazards in the installation process. Many installation workers without professional training did not connect the water heater with the lightning protection device arranged on the roof for e...Read more -
Brief history of lightning
Lightning phenomenon and its impact on human activities have long attracted people’s attention. There are records about thunder and lightning in the oracle bone inscriptions of the Yin Dynasty as early as the 14th century BC. Later, in the Huai Nan Zi waiting for Liu An in the Western Han D...Read more -
Basic knowledge of lightning protection and grounding safety
1. There are two basic forms of lightning overvoltage: One is: direct lightning – also known as direct lightning Second: lightning induction – also known as inductive lightning 2. Function of lightning arrester: The lightning arrester is a metal body used to accept direct lightning st...Read more -
Lightning protection in summer
In case of lightning and thunder, outdoor activities shall be avoided as far as possible, and the doors and windows shall be closed to prevent the intrusion of side lightning and spherical lightning. It is not suitable to use electrical and communication equipment. It is best to disconnect the po...Read more