Electric surge protector of composite low-voltage distribution system is design according toIEC standard.It adopts the most advanced technology of preignition clearance and automatic matching of energy and has invalidation detection indication,standard modularization installation ,and powerful discharge capacity of lightning current.It’s applicable to the protection of building’s genneral 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-D38O/220M
Nominal working voltage Un
380V/220V
Maximum continuous working voltage Uc
320V
Lightning impulse current Iimp（10/350μs）
25KA
Nominal discharge current In（8/20μs）
100KA
Voltage protection level Up
1.5KV
Freewheeling suppression If
3KA
Response time Ta
≤100ns
External dimension
144/72×90×64mm
Operating temperature range Tup
-40℃to +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+1/1+1/2+0
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.
