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Product introduction
Germany DEHN DB 1 255 H/DB 3 255 H single-phase and three-phase surge protector, has the high fly-wheel inhibition ability; Used for low pressure device of surge protection, in the direct lightning can be when protection; Used for lightning protection partition OA - 1. Replace old type products DEHNbloc 1 255 (900 111) and DEHNbloc 3 255 (900 110)
Function characteristics
? ? sealed spark gap, movements, don spray gas spark
? ? spark gap technology, fly-wheel inhibition high
? ? and Red/Line products series energy coordination
? ? insulation impedance is high, can be installed on the superior in the panel
? ? conductor and bus various connection mode
? ? monopole and three pole unit (according to the system configuration, impact current can be up to 100 ka)
Technical parameters
DB 1 255 H DB 3 255 H
According to the EN 61643-11, SPD grade 1 grade 1
According to IEC 61643-1, SPD Ⅰ level Ⅰ level
Nominal voltage UN 230 v 230/400 v
Ac maximum continuous working voltage UC 255 v, 255 v
Lightning surge current (10/350 μ s) Iimp 50 ka -
Lightning surge current (10/350 μ s) [L - N/NEN] Iimp - 50 ka
Lightning surge current (10/350 μ s) [L1 + L2 + L3 - N/PEN] Itotal - 100 ka
Nominal discharge current (8/20 μ s) In 50 ka 50/100 ka
Voltage protection level Up acuities 4 kv acuities 4 kv
Power frequency fly-wheel interrupting capacity Ifi 50 karms 50 karms
Fly-wheel inhibition/selective expected fly-wheel to 50 karms, 20 a fuse don jump expected fly-wheel to 50 karms, 20 a fuse don jump
Response time tA acuities 100 ns acuities 100 ns
Ik = 50 karms (ta acuities were 0.2 s), the biggest backup fuse (L) 500 a gL/gG 500 a gL/gG
Ik = 50 karms (ta acuities 5 s), the biggest backup fuse (L) 315 a gL/gG 315 a gL/gG
Ik > 50 karms, maximum backup fuse (L) 200 a gL/gG 200 a gL/gG
Series maximum backup fuse (L - L ) 125 a gL/gG 125 a gL/gG
Transient overvoltage (TOV) UT 335 v / 5 SEC. 335 v / 5 SEC.
Working temperature range (parallel) TUP - 40 ℃... + 80 ℃ to 40 ℃... + 80 ℃
Working temperature range (series) TUS - 40 ℃... + 60 ℃ to 40 ℃... + 60 ℃
The minimum installation conductor sectional area (L, L, N/PEN, N / PEN) 10 best callus induction stranded wire/soft line --
Maximum installation conductor sectional area (L, N/PEN) 50 best callus induction stranded wire/best callus induction and soft line --
Maximum installation conductor sectional area (L, N / PEN) 50 best callus induction stranded wire / 25 best callus induction soft line --
Installation conductor sectional area (L1, L1, L2, L3, L2, L3, N/PEN, N / PEN) - 10 best callus induction stranded wire/soft line
Installation conductor sectional area (L1, L2, L3, N/PEN) - 50 best callus induction stranded wire/best callus induction and soft line
Installation conductor sectional area (L1, L2, L3 , N / PEN) - 50 best callus induction stranded wire / 25 best callus induction soft line
Installation and mmdin rail, on the basis of the EN 60715 35 mmdin rail, on the basis of the EN 60715
Shell material red thermoplastic materials, UL 94-0 red thermoplastic materials, UL 94-0
Protection level IP 20 IP 20
Size 2 mods, DIN 43880 2 mods, DIN 43880
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