Lightning protection guide by OBO

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Last revision 2020

Vydal: OBO BETTERMANN s. r. o. Autor: OBO BETTERMANN

Strana 245 z 288

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Due to the capacity the gas-discharge tube they are however limited their bandwidth: the cut-off fre- quency currently around GHz. Coaxial surge protective devices with gas-discharge protector The first type coaxial surge protective devices with a gas-discharge tube. Coaxial arrestors come two types: With either gas-discharge protector and Lambda/4 technology. Surge arrestors with Lambda/4 technology The second variant the surge arrestor with Lambda/4 technology.11n standard with a frequency 5. They are available for virtually all plug systems. They are available for all standard connections. The disadvantages these devices are that not possible transmit supply voltage along the sig- nal line, and their scope application generally lim- ited just one application, depending whether the necessary frequencies lie within the frequency range supported. For signals outside the frequency range sup- ported, this arrestor type galvanic short circuit.TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 Coaxial surge protective device with gas-discharge pro- tector Coaxial surge protective device with Lambda/4 techno- logy These sensitive, high-frequency systems need be protected from lightning currents and surge voltages. These arrestors are band-pass filters that only pass frequencies within specific range. The gas-discharge tube can additionally replaced case defect. These enable transmission from a frequency (DC). These offer optimal transmission behaviour with low damping values and are connected series the transmission path. TBS Blitzschutz-Leitfaden 2018 / en / 2020/01/10 14:42:40 14:42:40 (LLExport_02613) / 2020/01/10 14:42:54 14:42:54 245 Chapter The internal lightning protection system . The advantages this technology are its support for frequencies around GHz, and its very low protection level approximately They also re- quire virtually servicing because they not use a gas-discharge protector. Suitable arrestors for these applications include the DS coaxial surge arrestor from OBO Bettermann. They can therefore used a wide range applications. For example, no Wi-Fi signals according the 802.9 GHz can transmitted