Lpu Installation Diagram - Motorola PTP 300 Series User Manual

5.5

LPU Installation Diagram

This section contains a diagram to show how the components of PTP 300 sites are installed
and connected with LPU.
The recommended standard components for protecting installations are:
•
Screened CAT 5e cable, also known as Shielded CAT 5e or CAT 5e STP (Shielded
Twisted Pair)
•
Surge arrestor, type PTP-LPU: 2 per link (1 Motorola Kit Part Number WB2978AA)
•
Grounding stake
•
Grounding cable: minimum size 8 AWG, preferably 6 or 4 AWG
•
RJ45 screened connectors
There may be a local regulatory requirement to cross bond the CAT 5e cable to the mast or
tower at intervals as regular as every 10 metres (33 feet). This can be achieved using an
Andrew grounding assembly type 223158 or similar.
NOTE
Refer to instructions contained in the Andrew grounding kit for correct installation, or if
instructions are missing, refer to:
http://awapps.commscope.com/catalog/product_details.aspx?id=15832&tab=2
Where an installation already has, or requires the use of a Master Ground Bar then the
requirements of Motorola Specification R56 "STANDARDS AND GUIDELINES FOR
COMMUNICATION SITES" (68P81089E50) take precedence over those in this guide.
NOTE
If a coaxial (or other) cable is already cross-bonded to the mast or tower, the same
cross bonding points on the mast or tower must be used for the CAT 5e cable.
4Gon www.4Gon.co.uk info@4gon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
45
5 Lightning Protection