Lightning Protection-Surge Protective Device-18/20 μ S Power Supply Surge Protector

Introduce

WD1 series surge protector (hereinafter referred to as SPD) is applicable to T, TT, TN-C, TN-S, TN-C-S and other power supply systems with AC 50/60Hz and rated voltage of 380V to protect indirect lightning, direct lightning or other transient over-voltage surges. Class 1 surge protector according to 1EC61,643-1:1998-02 standard. Type B surge protector.
SPD has common mode MC and differential mode (MD) protection modes.
SPD conforms to GB18802.1/1EC61643-1.

Installation

At the junction of LPZ0A or LPZ0B area and LPZ1 area, 35mm standard guide rail is used for installation, and the connecting copper multi strand flexible wire is 25~35mm2.
It is usually installed at the incoming low-voltage main distribution cabinet.
The grounding wire shall be a two-color conductor of more than 10mm2, and the length shall not exceed 500mm.
In order to prevent the normal operation of the power grid from being affected by the failure of the surge protective device (SPD), a fuse or circuit breaker should be connected in series with the L line protector (Note: Select according to the nominal current)

working principle

SPD is one port, electric shock protection, indoor fixed installation, voltage limiting type.
SPD built-in separator. When SPD fails due to overheating and breakdown, the disconnector can automatically disconnect it from the power grid and give an indication signal. The visual window displays green when the SD is working normally, and red when the SD fails to disengage.
The maximum discharge current Imax of each line can reach 100kA720kA/150kA.

technical parameter

Overall Dimensions