Power supply lightning protection module（type B）
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 applicable 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.
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Model |
HD-D220M40B |
HD-D220M20B |
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Nominal working voltage Un |
220V |
220V |
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Maximum continuous working voltage Uc |
275V |
275V |
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Nominal discharge current In（8/20ms） |
20KA |
10KA |
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Maximum discharging current Imax（8/20ms） |
40KA |
20KA |
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Voltage protection level Up |
1.6KV |
1.2KV |
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Overall dimension |
36×90×66mm |
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|
Response time Ta |
≤25ns |
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|
Operating temperature range Tup |
-40℃至+70℃ |
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Section of minimum installed conductor |
6mm2 Multi-folded wire |
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Protection grade |
IP20 |
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Sheathing material |
Flame retardant thermoplastic material |
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Mode of connection |
Parallel connection |
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Ground the null line repeatedly when long-distance overhead incoming feeder is connected to the building.
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.
