User's Guide

PTP 250 User Guide Grounding and lightning protection
phn-2182_003v004 (Oct 2011)
UNDER DEVELOPMENT
2-15
Grounding and lightning protection
This section describes the grounding and lightning protection requirements of a PTP 250
installation.
Electro-magnetic discharge (lightning) damage is not covered under warranty.
The recommendations in this guide, when followed correctly, give the user the
best protection from the harmful effects of EMD. However 100% protection is
neither implied nor possible.
The need for power surge protection
Structures, equipment and people must be protected against power surges (typically
caused by lightning) by conducting the surge current to ground via a separate preferential
solid path. The actual degree of protection required depends on local conditions and
applicable local regulations. Motorola recommends that PTP 250 installation is contracted
to a professional installer.
Standards
Full details of lightning protection methods and requirements can be found in the
international standards IEC 61024-1 and IEC 61312-1, the U.S. National Electric Code
ANSI/NFPA No. 70-1984 or section 54 of the Canadian Electric Code.
The requirements of Motorola manual R56 Standards and Guidelines For Communication
Sites take precedence over those in this guide.