Installation Manual
1.2. ELECTRICAL INSTALLATION
1.2.1. General
Read the health and safety warnings in chapter 1.3.
1. Warning: This unit contains dangerous voltages. Loss of life, severe personal injury, or property
damage can be the result if the instructions contained in this manual are not followed.
2. Caution: It is compulsory to ground (earth) the unit before connecting the power supply. A
grounding bolt is provided on the cabinet to connect the ground-bonding cable.
3. Caution: Although the remote unit is internally protected against overvoltage, it is strongly
recommended to ground (earth) the antenna cables close to the antenna connectors of the remote unit
for protection against atmospheric discharge. In areas with strong lightning, it is strongly
recommended to install additional lightning protection.
4. Caution: If the mains connector of the remote unit is not easily accessible, a disconnect device in
the mains power circuit must be provided within easy reach.
5. Caution: Before connecting or disconnecting the mains connector at the remote unit, ensure that
mains power supply is disconnected.
6. Caution: Make sure that an appropriate circuit breaker acting as a disconnect device (as required by
IEC/EN60950-1) and an overcurrent limiting device are connected between mains power and the
Remote Unit.
7. Caution: A connection of the mains supply to a power socket requires the power socket to be nearby
the remote unit.
8. Caution: Incorrectly wired connections can destroy electrical and electronic components.
9. Caution: To avoid corrosion at the connectors caused by electrochemical processes, the material of
the cable connectors must not cause a higher potential difference than 0.6 V (see electrochemical
contact series).
10. Note: Use an appropriate torque wrench to tighten the 7/16 DIN-type (1 ΒΌ -inch opening) antenna
connectors to a coupling torque of 25 N-m / 19 ft lb. Torque wrench item no. 244377, available from
the CommScope e-catalog, is recommended. Do NOT use your hands or any other tool (e. g. a pair
of pliers)! This might cause damage to the connector and lead to a malfunction of the Remote Unit
or increased PIM.
11. Caution: For unstabilized electric networks, which frequently generate spikes, the use of a voltage
limiting device is advised.