Lightning/surge Arresters Combicontroller
Description: Combicontroller V25-B+C, V25-B+C/....+NPE ensures lightning protection potential equalisation in accordance with VIDE 0185, Part I and Part 100. The device is an arrester of requirement Class B+C to DIN VIDE 0675, Part (Draft 11.89) Al, A2. It ensures potential equalization for the energy supply line in lightning protection installation for buildings. The arrester can also be used in buildings that are supplied with power via an overhead line, since direct or partial lighting currents may be expected there as well. Version V25-B+C/3+NPE (Requirement Class B+C) is a special surge arrester for TN-C-S, TN-S TT and IT systems. This device was developed for the new requirements of DIN VDE 0100, Part 534/Al, to allow simple and safe installation of the devices. High-performance arrester OBO V25-B+C has a special varistor circuit made up of powerful zinc oxide varitors with a highly non-linear characteristic (a>30). This design ensures maximum protection even with powerful surges. Even at a maximum load Imax of 50 kA the protection level is below 1.5 kV. This enables this type of device to withstand even partial lightning currents from direct lightning strikes. In the event of an overload, the built-in isolating device isolates the faulty, nester module from the network and indicates this with a red field. Because of the low residual voltage, OBO lightning, nester V25-B+C can also be used as a combined anester B and C. Service location is in accordance with VDS 2031. Regarding mounting the OBO V25-B+C can easily be installed in any distribution box or switchgear cabinet by snap-fitting to any commercial 35 mm top-hat rail. The NPE nester element type C 25-B+C/NPE and the matching base are designed so that they cannot be plugged the wrong way round (coding).
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