How to choose the maximum working voltage of the lightning arrester, choose 275V or 385V

How to choose the maximum continuous working voltage Uc of the surge protector and lightning protector? Is the conventional product 275V or 385V?

According to the maximum continuous working voltage of the national standard GB50057 lightning arrester, it is enough to choose a phase voltage of 1.15 times in most cases. Therefore, in many cases, the lightning arrester with the maximum continuous working voltage of 255V can be installed in the three-phase 380VAC power distribution system.
Because the lightning arrester is installed between the line and the ground, not between the fire line and the fire line.
At present, 385V is generally selected in the industry because this voltage is easier for everyone to accept. Within the appropriate range of residual voltage, the life of some lightning arresters will be longer if the voltage is appropriately higher.

refer to:
The maximum continuous operating voltage of the surge protector should not be less than the minimum value specified in Table J.1.1; the supply voltage deviation at the installation of the surge protector exceeds the specified 10% and the harmonics increase the voltage amplitude The minimum value of the maximum continuous operating voltage specified in Table J.1.1 should be increased for the voltage-limiting surge protector according to the specific situation.

Uchi lightning protection provides a variety of different maximum continuous working voltage surge protectors to choose from, such as the maximum continuous working voltage: 150VAC, 275VAC, 385VAC, 420VAC, 460VAC, 510VAC, 550VAC, 750VAC and so on.

In the domestic single-phase system, it is recommended to choose the Uc275V lightning arrester, and the three-phase system can choose the 385V product. Some other special application scenarios such as 480VAC, 690VAC and other voltage level systems can be selected on demand.
It should also be noted that the maximum working voltage here refers to the voltage that can be continuously loaded at both ends of the lightning arrester, not the voltage that needs to be supplied to the lightning arrester. The lightning arrester is passive.
Uchi lightning protection https://www.surgeprotectiondevicespd.com/