How to choose and judge SPD-recommended THOR surge protector when purchasing
At present, a large number of cheap and low-quality surge protectors are pouring into the market, which makes many users confused about how to choose and judge the purchase of high-quality surge protectors. How to choose a suitable surge protector?
1. Surge protection device graded protection
The Surge protection device is divided into three levels according to the area that needs to be protected.
The first-level Surge protection device 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 protection device 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 protection device 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 be greedy when buying a home surge protector. It's 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. Check whether it has the certification of the international authoritative testing agency
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.
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
Clamping voltage (a protection voltage measured after the lightning protection discharges energy or current, the lower the protection voltage, the better the protection performance.)
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. The company specializes in the production of high-quality surge protectors. It has been producing, selling and developing Surge protection devices for nearly 20 years. The products have lightning protection product type test reports and certifications from domestic and foreign authoritative organizations such as CE and TUV. Check and protect your power electronic equipment from lightning damage.