Power distribution lightning protection module HD-PMT2

HD-PMT2 is a Class II lightning surge protector applied to the main distribution system. It has the advantages of strong lightning withstand capability up to 40KA (Imax), low voltage protection level (≤1.7KV), leakage current less than 10uA, and intermittent flow capability (25KA). With integrated base and pluggable chip structure, there are 2P, 4P combination, suitable for TT/TN grid type. It is the best choice for distributing secondary lightning protection at the cabinet and secondary switch. Model HD-PMT2-40/385 HD-PMT2-20/385 Number of modules 4P/2P 4P/2P Suitable power grid type TT/TN-S/TN-C-S TT/TN-S/TN-C-S Nominal voltage Un 220/380V 220V/380V Maximum continuous working voltage Uc 385V 385V Voltage protection level Up 1.7KV 1.6KV Nominal discharging current In 20KA 10KA Maximun discharging current Imax 40KA 20KA Response time Ta 25ns 25ns Pre-fuse 32A 16A Leakage current 10uA Connecting wire diameter 6mm2 Fault indication Yes Operating temperature -40℃~+70℃ Humidity ≤95% Altitude ≤2000m Protection degree IP20 Flame retardant level V0 Installation Clip on 35mm electrical guideway Protection mode L/N-PE, L-N-PE 3L/N-PE, 3L-N-PE External dimension 72*90*65mm/36*90*65mm Ground the null line repeatedly when Long-distance overhead incoming lines enter buildings. Plug the power phase line (L) and null line (N）into corresponding connector of the electric surge protector and make sure it's firm and reliable. Connect the ground terminal of arrester with the ground lead of lightning protection well (recommended earth resistance ≤4Ω). Suggested specification of the lead wire: no less than 6mm2, short and straight.