How to choose and judge-purchase high-quality surge protection device At present, a large number of inferior surge protectors are flooding into the market. Many users do not know how to choose and distinguish. This has also become a difficult problem for most users to solve. So how to choose a suitable surge protection device? 1. Surge protector graded protection The surge protector is divided into three levels according to the area that needs to be protected. The first-level surge protector can be applied to the main power distribution cabinet in the building, which can discharge the direct lightning current, and the maximum discharge current is 80KA~200KA; The second-level surge protector is used in the shunt power distribution cabinet of the building. It is a protection device for the participating voltage of the front-level lightning protector and the induced lightning strike in the area. The maximum discharge current is about 40KA; The third-level surge protector is applied to the front end of important equipment. It is the final means of protecting the equipment. It protects the LEMP and the residual lightning strike energy passing through the second-level anti-aircraft mine. The maximum discharge current is about 20kA. 2, look at the price Don't try to be cheap when buying a home surge protector. It is best not to use the cheap surge protectors on the market. These units are rather limited in capacity and will not be useful for larger surges or spikes. It is easy to overheat, which in turn can cause the entire surge protector to catch fire. 3. See if there is an international authority certification certificate If you want to know the quality of the product, you also need to see whether it has the certification of the international authoritative testing organization. If the protector does not have a certificate, it is likely to be an inferior product, and the safety cannot be guaranteed. Even the high price does not mean the quality is good. 4, look at the strength of energy absorption capacity The higher its energy absorption capacity, the better the protection performance. The value of the protector you buy should be at least 200 to 400 joules. For better protection, protectors with values above 600 joules are the best. 5. Look at the response speed Surge protectors do not open immediately, they respond to surges with a slight delay. The longer the response time, the longer the computer (or other device) will experience the surge. So buy a surge protector with a response time of less than a nanosecond. 6. Look at the clamping voltage The lower the clamping voltage (a protection voltage measured after the lightning protection discharges energy or current), the better the protection performance is. In short, in the process of choosing a surge protector, it is necessary to recognize the brand and learn more about its performance in all aspects. Thor Electric has been focusing on lightning protection for 20 years. Its products have CE and TUV certifications, and the production process is checked at every level to ensure Power electronic equipment is protected from lightning damage.

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Post time: Sep-09-2022