May 21, 2023
In order to prevent lightning accidents and ensure safety of equipment, most people choose lightning protection for daily protection of equipment, but in many cases, lightning protection is easily damaged, has no protective effect, and does not have an after-sales warranty.
Do I need to be able to choose lightning protection? How can we avoid such things?
Recognize power distribution system
First of all, you must know your own power distribution system, whether it is TT, TN or IT system, because you can determine single-phase, three-phase, wiring mode, etc., and determine installation location of product to choose right lightning protection product.
Clear important parameters of lightning protection device
(1) Rated voltage Un: The rated voltage of protected system is constant. In an information technology system, this parameter indicates type of protection device to be selected and indicates rms value of AC or DC voltage. .
(2) Rated voltage Uc: maximum r.m.s. voltage that can be applied to designated end of protection device for a long time without causing a change in characteristics of protection device and operation of protection element.
(3) Rated discharge current Isn: when a standard lightning wave with a waveform of 8/20 µs is applied to protection device 10 times, maximum peak surge current that protection device can withstand.
(4) Maximum discharge current Imax: when protection device is subjected to a standard lightning wave with a waveform of 8/20 µs once, maximum peak surge current that protection device can withstand.
(5) Voltage protection level Up: maximum protection value in following tests: breakdown voltage with a slope of 1 kV/μs, residual voltage at rated discharge current.
View lightning protection detection report
When choosing lightning protection products, you must choose products that have passed test of lightning protection center, and safety performance is guaranteed.
When choosing a manufacturer, we must pay attention to strength of manufacturer, try our best to choose a manufacturer with many years of experience in field of lightning protection, and provide after-sales protection of lightning protection products.
Lightning protection device must comply with legal requirements
At present, lightning protection manufacturers appear endlessly, but many manufacturers do not have legal and regulatory conditions for production of lightning protection devices. Moreover, lightning protection device did not pass test and acceptance of lightning protection center, it is a fake on market, and there is no guarantee of quality and safety of performance, so more attention should be paid to choice of lightning protection device.
The choice of lightning protection is a very important link. Only by choosing right lightning rods, you can truly ensure safety of buildings and equipment.
Therefore, here editor reminds consumers to learn more about performance of lightning protection devices and to choose high-quality manufacturers to purchase lightning protection products.