Surge arresters for computer networks
May 2006
Electrical Power & Protection
Dehn's UGKF surge arresters are shielded devices for plugging into coaxial terminal devices or connections in computer networks or outdoor video surveillance systems. In order to avoid leakage pickups, the cable shield is earthed indirectly via a gas discharge tube. The arrester entries are used as sockets and protected outputs as plugs. The UGKF SPDs are installed upstream of the network card and the earth conductor is connected to the earth electrode of the enclosure.
Designed for use in the LPZ concept at boundaries 0B -2 and higher, the UGKF BNC model is suitable for protecting video cameras and Arcnet with BMC connection. Operating on 5 V, it has a 2,5 kA (8/20) discharge current with 10 Ω impedance per line. Special units for video cameras with higher nominal voltage are available.
Suitable for Ethernet 10-Base 2 with BNC connection, the UGKF BL model can also be connected with EAD sockets or tees. UGKF NL is suitable for Ethernet 10-Base 5 with N connection. A maximum of two SPDs may be installed in one section. An insulating sleeve is included for isolating the enclosure from earth potential.
For more information contact Paul van As, Surge Technology, 011 792 1303, [email protected], www.surgetek.co.za
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