Crate-type power supply lightning protection box(medium size)
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.
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Model |
HD-D220B-XX80 |
HD-D220B-XX60 |
HD-D220C-XX40 |
HD-D380/220B-XX |
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Nominal working voltage Un |
220V |
220V |
220V |
220V |
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Maximum continuous working voltage Uc |
275V |
275V |
275V |
275V |
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Nominal discharge current In （8/20μs） |
40KA |
30KA |
20KA |
25KA |
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Maximum discharging current Imax（8/20μs） |
80KA |
60KA |
40KA |
60KA |
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Voltage protection level Up |
2.3KV |
2KV |
1.6KV |
2.5KV |
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Prepositive overflowing protection |
125A |
63A |
32A |
63A |
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Response time Ta |
≤25ns |
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Operating temperature range Tup |
-40℃ to +70℃ |
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Working order indication |
Green light means work normally,red light means fault indicaiton. |
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Section of minimum installed conductor |
6mm2 multi-folded wire |
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Protection grade |
IP20 |
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External dimension |
250×310×110mm |
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Sheathing material |
Metal spraying |
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Mode of connection |
parallel connection |
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Protection mode |
4+0/3+1/1+1/2+0 |
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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 well (recommended earth resistance ≤4Ω).
Suggested specification of the lead wire: no less than 6mm2, short and straight.
