Electrical safety notice – Comtech EF Data LPOD-R User Manual
Page 47
LPOD-R Outdoor Amplifier / Block Up Converter (BUC)
MN-LPODR
Preface
Revision 1
xi
Electrical Safety Notice
CAUTION – Neutral Fusing – Double pole/neutral fusing is used on the prime power
supply input.
This equipment has been designed to minimize exposure of personnel to hazards. For further
information, contact Comtech EF Data, Customer Support Department. 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.
Installation Guidelines Regarding Power Line Quality
Comtech EF Data has become familiar with the varying quality of the AC power grid
around the world. Observing the following installation guidelines should help ensure a
reliable installation.
• 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 LPOD-R does have built in surge
suppression, if the unit is to 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 LPOD-R provides a grounding terminal. This is provided to allow you to
ground the LPOD-R 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 LPOD-R except for the ground wire. Cap all RF connections with terminations. This will
prevent damage to the input/output circuitry of the LPOD-R.
• Lightning: Lightning strikes on or around the antenna will generate extremely high voltages
on all cables connected to the LPOD-R. Depending on the severity of the strike, the LPOD-R’s
internal surge protection combined with the recommended external suppression may
protect the LPOD-R’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
.