Equipment Connection; Grounding Connection; Service Voltage Connection - Comba Telecom RA-5200 Installation Manual

8.3

EQUIPMENT CONNECTION

3.5.1 GROUNDING CONNECTION

Ground connection
To ensure safe operation of the product, a ground (earth) connection is required. For single phase AC
power source, the product must be grounded by connecting the "earth wire" of the power cord to the
ground terminal of the AC supply. For operating this product with DC power system (such as
rectifiers), the product should not be connected to power systems that switch open the return lead
because the return lead could function as the ground (earth) connection for the equipment.
Protective Ground Connection
The enclosure must be grounded securely by connecting a copper wire (CSA 16mm
terminal on the equipment/rack, and the other end to a protective ground (i.e. building earth point). An
internationally acceptable colour code of the ground connection wire is green/yellow.
Such a ground connection implements the "Protective Ground Connection", and must be connected to
the equipment at the designated ground point. In general, do not connect the supply before
establishing an adequate ground (earth) connection.
MOU Grounding Connection
Connect the grounding terminal located on the back panel of MOU to a protective ground (i.e. building
earth point).
ROU/RRU Grounding Connection
The equipment must be grounded securely. Connect a copper wire to the grounding terminal on the
mounting tab/enclosure, and connect the other end to a protective ground (i.e. building earth point). An
internationally acceptable coloring code of the ground connection wire is green/yellow.

3.5.2 SERVICE VOLTAGE CONNECTION

MOU Service Voltage Connection
MOU accepts AC or DC power depending on the type of PSU installed.
•
For AC PSU – The power connector is on the front of the PSU module. Connect the PSU to AC
mains power outlet using a standard IEC power cord.
•
For DC PSU – When the equipment is required to be DC power supply, the power connector
located on the front panel of PSU unit will be connected to the DC power source. The connectors
are colour coded for rectifying equipment in the BTS installation using power cable with CSA of
2
2mm .
Unterminated colour coded wires are supplied, during installation, these are to be terminated
to the appropriate length, and crimp connectors applied before attaching securely onto the
appropriate connections of the PSU SIU.
The DC power cable for -48V is colour coded, typically as BLUE for "-48V" or "Battery" and
BLACK for "0V" or "Return" connections.
The DC power cable for +24V is colour coded, typically as RED for "+24V" or "Battery" and
BLUE for "0V" or "Return" connections.
RA-5200 QI
ENU Status : 1-0-0
INSTALLATION GUIDE FOR RA-5200
Copyright - refer to title page
2
) to the grounding
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