User's Manual

User’s Manual for ION-B Systems
Page 23
3.1.5. TFAx Case U Electrical Installation
3.1.5.1. General
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 for the coupling torque of N-type
connectors (2 Nm / 1.5 lb/ft), with 13/16 in opening to tighten the N-type antenna
connectors. For example, use torque wrench of item no. 244379 available from
the CommScope 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. Caution: For unstabilized electric networks, which frequently generate spikes,
the use of a voltage limiting device is advised.