Hipath 3000; Electrical Environment; Lightning Protection; Hipath - Siemens HiPath 3000 Series Service Documentation

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Nur für den internen Gebrauch

HiPath 3000

HiPath 3000 is intended for use in dwellings, businesses, and industry. When the system is op-

erated in an industrial environment, additional measures may be necessary for ensuring immu-

nity from electromagnetic radiation (refer to Section 2.11).

Lightning protection for the boards

Analog 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 voltage

with 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.

Once 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 well

as the low-impedance connection (of the additional permanently-connected protec-

tive ground conductor) to the building's potential equalization bus.

External lightning protection

In 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 lightning

Lightning protection of this kind is known as "additional primary protection". This is

either installed on the MDF (Main Distribution Frame) or at the entry point of the line

into the building. A gas-filled surge arrester with 230 V nominal voltage is switched

to ground from each wire that is to be protected.

Without this additional primary protection, lightning that exceeds the voltage values

given above could irreparably damage the boards. This can cause the entire system

to fail or result in components overheating (risk of fire).

Definition of "additional primary protection"

"Additional primary protection" is a gas-filled surge arrester that must be correctly installed

on the MDF (Main Distribution Frame) or at the entry point of the line into the building.

A31003-H3590-S100-7-7620, 06/2012

HiPath 3000/5000 V9, Service documentation

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