Series 3402 lightning EMP protectors Gas discharge tube (GDT) technology up to 3 GHz Description HUBER+SUHNER gas discharge tube protectors make the best of the traditional spark gap protection principle for general applications in electronics and adapt it perfectly to RF coaxial line applications. At their heart are specially designed gas discharge tubes. The available product range of GDT's enables a selection according to the RF transmission power with an optimum protection performance. A very important feature of the GDT protectors is the possibility to DC/AC power outdoor equipment via coaxial cable. Series 3402 products can be used broadband from DC to 2.5 GHz respectively up to 3 GHz for platform 3000. They are generally designed as coaxial feed-throughs which allow the customer to build up a protected area according to the recommended and well-proven protection zone principle of IEC 62305. HUBER+SUHNER GDT protectors are designed such that the gas discharge tubes can be easily exchanged for new operation conditions or replaced in the case of a necessary service. Features • Broadband DC to 3 GHz • DC continuity for remote powering • Gas discharge tube replaceable • Easy maintenance • Semper self-extinguishing functionality optional (see page 91) General specifications Electrical data RF characteristics Impedance Frequency range Return loss* (RL) Insertion loss* (IL) RF power transmission DC current rating Protection characteristics Surge current handling capability Residual pulse voltage and energy * With 230 V gas discharge tube (9071.99.0547) 50 or 75 Ω DC – 2.5 GHz, standard configuration DC – 3 GHz, platform 3000 (some types different according to shown specification, but 2 GHz min.) 20 dB min. 0.2 dB max. according to selected gas discharge tube – refer to page 86 refer to data in chapter «General information – Connector interfaces» and product detail specification (data sheet) test pulse 8/20 µs single 8/20 µs multiple 10/350 µs 30 kA 20 kA 8 kA for typical values refer to the following diagram 40 HUBER+SUHNER Lightning protection
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