Three phase Iimp 25kA type 1 spark gap surge arrester

FV25B/4-xxx S

- High impulse current multi-layer three phase Iimp 25kA type 1 spark gap surge arrester,
- With indication window,
with remote control contacts,
- Compact design,
-Used in the lightning protection zones concept at boundary LPZ0B-LPZ1,
-The core parts are spark gap with high discharge capacity,
-35mm2 DIN-rail in accordance with EN 50022/DIN46277-3,
-Low residual voltage and quick response.
-Protection mode: L-N / N-PE / L-PE.
1. Dimension of surge arrester FV25B/4-xxxS



2.
Electrical parameters of surge arrester FV25B/4-xxxS

Model No.   FV25B/4-150S FV25B/4-255S FV25B/4-275S FV25B/4-320S FV25B/4-385S
Test class according to IEC61643-11:2011 I
Type of Network TT-TN-IT
Nominal voltage UN 110/220V 220/380V
Rated Voltage (Max. Cont. Operating Voltage) Uc 150VAC 255VAC 275VAC 320VAC 385VAC
Impulse current (10/350μs) Iimp 25kA 25kA 25kA 25kA 25kA
Nominal discharge current (8/20μs) In 25kA 25kA 25kA 25kA 25kA
Voltage protective level at 25kA Up ≤1.6kV ≤1.6kV ≤1.6kV ≤1.8kV ≤1.8kV
Isolation resistance Risol >102 >102 >102 >102 >102
Response time tA ≤100ns ≤100ns ≤100ns ≤100ns ≤100ns
Recommended back-up fuse 315A
I/O Connections By screw terminal:10-35mm2
By connection bus
Mounting Symmetrical rail (EN50022/DIN46277-3)
Operation temperature range / RH -25℃~+85℃/95%
Degree of protection IP20
Encapsulated Encapsulated
Housing material UL94V0
Disconnection indicator Mechanical indicator (Green: OK, Red: replace)
Remote control contact Optional
Color gray
3. Installation of surge arrester FV25B/4-xxx S

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