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Internal lightning and

surge protection

High plant availability can only be achieved if suitable in- Surge protection for power supply systems
ternal lightning protection measures are taken in addition Lightning equipotential bonding, which must be estab-
to the external lightning protection measures. In this way, lished for all incoming conductive systems, is an integral
electrical and electronic systems can be protected from the part of the internal lightning protection system. All ener-
effects of lightning strikes and switching operations. The gized systems are indirectly integrated into the equipoten-
energy coordinated product lines from DEHN provide relia- tial bonding system by means of type 1 arresters. Type 2
ble solutions: arresters are installed in the downstream sub-distribution
®
• Red/Line for power supply systems boards.
• Yellow/Line for data and information technology systems

DEHNventil M Type Part No.
®
Modular type 1 + type 2 spark-gap- DV M TT 255 FM 951 315
based combined arrester for DIN
rail mounting with a high discharge
capacity

®
DEHNbloc Maxi S Type Part No.
Coordinated single-pole type 1 light- DBM 1 255 S 900 220
ning current arrester with integrated
arrester backup fuse for busbar
mounting

®
DEHNguard M Type Part No.
Modular multipole type 2 surge arrest- DG M TT 275 FM 952 315
er for DIN rail mounting

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