ECI XDM-300, Руководство по установке и обслуживанию

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XDM-300 Installation and
Maintenance Manual Equipment Installation
417006-2311-0H3-A00 ECI Telecom Ltd. Proprietary 3-17
C
AUTION
:
If additional equipment other than XDM-300
shelves is used in the rack, a heat buffer must be installed
between any such additional equipment and the XDM-300
shelf to minimize the transfer of heat from shelf to shelf.
Consult your ECI Telecom representative regarding the exact
heat buffer required.
Installing the xRAP-B
Before connecting DC power cables, refer to DC Power Cables (on page 2-15 ).
The installation of an xRAP-B unit includes the following steps:
1. Prepare DC power cables.
2. Install the xRAP-B in the prescribed location, either at the top of the rack or
on the extendable installation rails.
3. Ground the xRAP-B to the rack grounding stud.
4. Connect DC input power cables to the xRAP-B.
5. Connect the DC power cables of the XDM-300 shelves to the xRAP-B.
6. Install circuit breakers.
7. Check DC voltage polarity.
8. Connect the alarm cables.
For a description of the xRAP-B, refer to the XDM-300 Reference Manual.
The DC input power cables connect between the two DC power sources and the
xRAP-B source A and source B inputs. Two cables are required, one for each
source.
N
OTE
:
According to accepted industry standards for
connecting DC power, the positive lead (+48 V) should be
connected with a red cable, and the negative lead (-48 V) with
a black cable. However, according to the BS7671 (GB) and
HD 308 S2:2001 (EU) standards, the positive lead (+48 V)
should be connected with a blue cable, and the negative lead
(-48 V) with a gray cable. In the following sections that
describe DC power cable connections, use cables with
appropriate colors to comply with the standards in your area
of residence.