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.
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Model
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HD-D38O/220M
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Nominal working voltage Un
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380V/220V
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Maximum continuous working voltage Uc
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320V
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Lightning impulse current Iimp（10/350μs）
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25KA
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Nominal discharge current In（8/20μs）
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100KA
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Voltage protection level Up
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1.5KV
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Freewheeling suppression If
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3KA
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Response time Ta
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≤100ns
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External dimension
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144/72×90×64mm
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Operating temperature range Tup
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-40℃to +70℃
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Section of minimum installed conductor
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6mm2 multi-folded wire
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Protection grade
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IP20
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Sheathing material
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Flame retardent thermoplastic material
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Mode of connection
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Parallel connection
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Protection mode
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4+0/3+1/1+1/2+0
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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.
