Comtech EF Data C Installation And Operation Manual page 10

HPOD
Preface
The operators and technicians must:
• Know how to work around, with and on high voltage equipment.
• Exercise every precaution to ensure personnel safety.
• Exercise extreme care when working near high voltages.
• Be familiar with the warnings presented in this manual.
CAUTION
I G
NSTALLATION
IMPORTANT
• Surge suppression: High voltage surges can cause failure of the power supply. These
surges are typically caused by circuit switching on the main AC power grid, erratic
generator operation, and also by lightning strikes. While the HPOD does have built in
surge suppression, if the unit will be installed in a location with questionable power grid
quality, Comtech EF Data recommends installation of additional power
conditioning/surge suppression at the power junction box.
• Grounding: The HPOD provides a grounding terminal. This is provided to allow the
user to ground the HPOD to the antenna's grounding network. All components installed
at the antenna should be grounded to a common grounding point at the antenna.
• Electrical welding: If welding needs to take place at the antenna, disconnect all cables
from the HPOD except for the ground wire. Cap all RF connections with terminations.
This will prevent damage to the input/output circuitry of the HPOD.
• Lightning: Lightning strikes on or around the antenna will generate extremely high
voltages on all cables connected to the HPOD. Depending on the severity of the strike,
the HPOD's internal surge protection combined with the recommended external
suppression may protect the HPOD's power supply. However, if the installation will be
in an area with a high probability of lightning strikes, Comtech EF Data recommends the
installation of surge suppression on the RF and IF cables. One source of these
suppressors is PolyPhaser (www.polyphaser.com)
For further information, contact Comtech EF Data, Customer Support Department.
A Neutral Fusing - Double pole/ neutral fusing used on the prime
power supply input.
R
UIDELINES EGARDING
Comtech EF Data has become familiar with the varying quality of the
AC power grid around the world. The following offers some
installation guidelines that should help ensure a reliable installation.
P L
OWER
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Revision 2
MN/HPOD.IOM
Q
INE UALITY