Introduction and Important Notes Nur für den internen GebrauchA31003-H3590-S100-7-7620, 06/20121-18 HiPath 3000/5000 V9, Service documentationinform.fmStandards and Guidelines for Installation1.6.4 Lightning ProtectionDefinition of “additional primary protection”“Additional primary protection” is a gas-filled surge arrester that must be correctly installedon the MDF (Main Distribution Frame) or at the entry point of the line into the building.1.6.5 Markings> NOTELightning protection for the boardsAnalog and digital subscriber lines are protected on the boards, for up to 2 kV longi-tudinal voltage and 1 kV transverse voltage, against the high-energy surge voltagewith a pulse shape of 10/700 μs and 1.2/50 μs that can be induced by lightning. How-ever, this protection is only effective if the system is properly grounded in accor-dance with the installation instructions.GroundingOnce the HiPath 3000 has been grounded, check the low-impedance ground con-nection of the system using the ground conductor of the power supply circuit, as wellas the low-impedance connection (of the additional permanently-connected protec-tive ground conductor) to the building’s potential equalization bus.> NOTEExternal lightning protectionIn the case of line lengths exceeding 500 m and where the lines exit the building,analog and digital subscriber line modules must be protected by external lightningprotection.Lightning protection of this kind is known as “additional primary protection”. This iseither installed on the MDF (Main Distribution Frame) or at the entry point of the lineinto the building. A gas-filled surge arrester with 230 V nominal voltage is switchedto ground from each wire that is to be protected.Without this additional primary protection, lightning that exceeds the voltage valuesgiven above could irreparably damage the boards. This can cause the entire systemto fail or result in components overheating (risk of fire).The device conforms to the EU directive 1999/5/EG, as attested by the CEmark.
