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PTP 250 User Guide
Cabling and lightning protection
This section describes the cabling and lightning protection components of PTP 250
installations.
PTP and lightning protection
The PoE power supply meets the low level static discharge specifications identified in
Electromagnetic compatibility (EMC) compliance
lightning or surge suppression.
The amount of lightning protection is dependent on regulatory and end user
requirements. The standard ODU is fitted with surge limiting circuits and other
features to minimize the risk of damage due to nearby lightning strikes. To be fully
effective, these standard features require some additional equipment to be configured
as part of the system installation.
WARNING
Outdoor connections
The term 'drop cable' refers to the cable that is used for all connections that terminate
outside the building, for example, connections between the ODU, LPU and PoE power
supply.
CAUTION
phn-2182_002v000
May 2011
The units are not designed to survive direct lightning strike. For this reason
they must not be installed in 'Zone A', as defined in
zones
on page 2-11. Mounting in Zone A may put equipment, structures and
life at risk.
For outdoor connections, always use Cat5e cable that is gel-filled and
shielded with copper-plated steel. This is the only type of outdoor drop cable
supported in this application.
Cabling and lightning protection
on page
4-22
but does not provide
Lightning protection
1-13
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