Three phase power supply lightning protection box（medium）

Electric surge protector of low-voltage distribution system, which is in the form of a box, is designed according to IEC standard. It has invalidation detection indication, lightning stroke numbering display, overflowing and overheating protection, and powerful discharge capacity of lightning current. It's applicable to the protection of buildings' general supply system against lightning. This lightning arrester is very convenient to be maintained. It connects with the circuit in parallel and has no limit to the power of equipment fixed later. Model HD-D380B-XX80 HD-D380B-XX60 HD-D380C-XX40 HD-D380/220B-XX Nominal working voltage Un 380V 380V 380V 380V Maximum continuous working voltage Uc 385V 385V 385V 385V Nominal discharge current In （8/20μs） 40KA 30KA 20KA 25KA Maximum discharging current Imax（8/20μs） 80KA 60KA 40KA 60KA Voltage protection level Up 2.3KV 2KV 1.6KV 2.5KV Prepositive overflowing protection 125A 63A 32A 63A Response time Ta ≤25ns Operating temperature range Tup -40℃ to +70℃ Working order indication Green light means work normally,red light means fault indicaiton. Section of minimum installed conductor 6mm2 multi-folded wire Lightning stroke register Optional Protection grade IP20 External dimension 250×310×110mm Sheathing material Metal spraying Mode of connection parallel connection Protection mode 4+0/3+1/1+1/2+0 Installation method： 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 appropriately (recommended earth resistance ≤4Ω). Suggested specification of the lead wire: no less than 6mm2, short and straight.