Installation Guide

7
Installation Environment 2.3
In addition to network planning, when determining where to place the eNB you need to
consider factors such as climate, hydrology, geology, the possibility of earthquakes,
reliable electric power, and transportation access. Avoid locating the eNB in areas where
there may be extreme temperatures, harmful gases, unstable voltages, volatile
vibrations, loud noises, flames, explosives, or electromagnetic interference (e.g., large
radar stations, transformer substations). Avoid areas prone to impounded water, soaking,
leakage, or condensation.
Table 2-2 provides typical environmental specifications for this eNB.
Table 2-2 Environmental Requirements
Item
Range
Typical value
Temperature
-40°C to 55°C
25°C
Relative humidity
(no condensation)
0% to 100%
5% to 95%
Safety voltage
40V to 57V
54V
Personnel Requirements 2.4
The installation personnel must master the basic safe operation knowledge, through the
training, and having the corresponding qualifications.
Lightening & Grounding Protection 2.5
You must protect the eNB, antenna, and GPS antenna from lightning. Following are
guidelines concerning lightening and grounding.
 The power adaptor connect to a surge arrester for lightening protection. (This
component has been shipped with the eNB.)
 The ground wire must be at least AWG15 or greater.
 In principle, always place the grounding as near as possible to the equipment.
 Connect to a reliable outdoor grounding point (earth) using one ground screw.
 The connection of the grounding points and ground bar need to be tight and reliable.
Rustproofing the terminals, e.g., with anti-oxidant coating or grease, is required.
Weatherproofing 2.6
To protect the connection points from weather and climate, clean each connection point
before installing cold shrink tubes, per the following (Figure 2-1).