User's Manual

1.2. ELECTRICAL INSTALLATION
1.2.1. General
Read the health and safety warnings in section 1.3.
1. 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. 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. Although the Remote Unit is internally protected against over-voltage, 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 highly recommended to insert
additional lightning protection.
4. 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. Before connecting or disconnecting the mains connector at the Remote Unit, ensure that mains
power supply is disconnected.
6. 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. A connection of mains supply to a power socket requires the power socket to be nearby the Remote
Unit.
8. Incorrectly wired connections can destroy electrical and electronic components.
9. 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. Use an appropriate torque wrench for the coupling torque of N-type connectors (2 N-m / 20 in lb),
with 13/16 in opening to tighten the N-type antenna connectors. For example, use torque wrench of
item no. 244379 available from the Andrew e-catalog. 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.
11. For unstabilized electric networks, which frequently generate spikes, the use of a voltage limiting
device is advised.
12. The unit complies with the surge requirement according to EN 61000-4-5 (fine protection); however,
it is recommended to install an additional medium (via local supply connection) and/or coarse
protection (external surge protection), depending on the individual application, in order to avoid
damage caused by overcurrent.
13. Observe the labels on the front panels before connecting or disconnecting any cables.