User's Manual

Table Of Contents
10 Lightning Protection
223
In Zone B, a direct lightning strike is unusual, but the un-attenuated electromagnetic field is
still present. Equipment mounted in Zone B should be grounded using grounding wire of at
least 10 AWG. This grounding wire should be connected to a grounding rod or the building
grounding system before entry in to building.
NOTE: Local regulations may also require the fitting of the 8 AWG grounding wire.
WARNING: Equipment mounted in Zone A must be capable of carrying the full lightning
current. Mounting of the ODU in Zone A is not recommended. Mounting in Zone A should
only be carried out observing the rules governing installations in Zone A. Failure to do so may
put structures, equipment and life at risk.
The PTP 600 Series bridge ODU grounding point can be found on the bottom of the unit. The
600 Series Bridge is supplied with an appropriate grounding lug for attachment to the ODU.
The following protection requirements are mandatory in both Zones A and B:
The ODU must be earthed
Screened CAT 5e cable must be used
Surge arrestors of type PTP-LPU must be installed at both the ODU and building entry
There must be an earth connection at building entry
The recommended standard components for protecting installations are listed in
10.4 “LPU
Re
commended Configurations”.