Electric surge protector of low-voltage distribution system is design according to IEC standard.It has invalidation detection indication,standard modularization installation,changeable lightning protection module and powerful discharge capacity of lightning current.It’s appliable to the protection of buildings’ general supply system against lightning.With 35mm standard guide-way,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-D380M40A
Nominal working voltage Un
380V
Maximum continuous working voltage Uc
385V
Nominal discharge current In （8/20μs）
20KA
Maximum discharging current Imax（8/20μs）
45KA
Voltage protection level Up
1.6KV
Response time Ta
≤25ns
Operating temperature range Tup
-40℃至+70℃
Section of minimum installed conductor
6mm2 multi-folded wire
Protection grade
IP20
Sheathing material
Flame retardent thermoplastic material
Mode of connection
Parallel connection
Protection mode
4+0/3+1/2+0/1+1
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.
