3 things to pay attention to when purchasing lightning protection devices:

1. The appearance design and specifications of the lightning protection device

The appearance design and specifications are related to the raw materials of the pump casing for the production of lightning arresters. According to the selection of the SPD application environment, if the indoor space is large, there is no need to consider the size of the SPD; if it is used in the room, then the specifications of the SPD should be taken into consideration: SiC pump housing of the silicon carbide SPD, the enterprise load The flow volume is only 1/4 of the ZnO pump casing. Under the same current-carrying capacity standard, the SiC pump casing has a large diameter and the lightning protection device is also large; under the same rated current and residual voltage standards, the silicon carbide lightning protection device The aspect ratio is larger than the active zinc oxide lightning arrester.

2, lightning protection device cost-effective

The pump casing of the non-void active zinc oxide lightning arrester suffers from the power grid's working voltage for a long time, and the natural environment standards are strict. The pump casing must be strictly tested in the original factory. The pump casing of the non-void active zinc oxide lightning arrester has poor working ability to bear transient overvoltage and cannot be used in the power grid of 3-35kv. For the serial application of gap active zinc oxide lightning arrester, the pump casing will not be damaged during long-term operation.

3, the life of the lightning arrester

Applying the natural environment, quality, and durability level, these various factors all endanger the life of the lightning arrester. The embrittlement level of the gate valve immediately endangers the life of the lightning arrester. The gap pump housing of the series-connected gap active zinc oxide lightning arrester is the most durable, and the pump housing of the non-void active zinc oxide arrester is the second, and the silicon carbide lightning arrester has the shortest service life, generally 7-10 years. If the application standard is too strict, the service life will be greatly shortened. The comprehensive service life of the pump casing of the series-connected gap active zinc oxide lightning arrester reaches more than 20 years.