Alcatel-Lucent 7705 - Cabling

Site Preparation
7705 SAR-8 Installation Guide Page 75
CBN and IBN support
The 7705 SAR-8 supports both Common Bonding Networks (CBN) and Isolated Bonding
Networks (IBN). The battery terminals, labeled Batt. A (+ and -) and Batt. B (+ and -) on the
chassis, are floating inputs relative to digital or chassis ground within the chassis.
For information on grounding the chassis and connecting the DC supply, refer to Chassis
Ground Wiring on page 85 and Wiring and Connecting DC Power on page 90.
Cabling
Warnings:
• In an IBN installation, the chassis ground terminal must be connected to ground at the
building ground point.
• In a CBN installation, if you use the 7705 SAR-8 chassis ground stud (located on the
right-hand side mounting bracket) to connect the chassis ground terminal(s) to the frame
ground on the rack, then you must use a second nut on the stud to secure the
attachment. The first nut is used to secure the building ground point wire to the chassis
ground stud, and that connection must be a single-purpose permanent connection.
Warnings:
• To meet surge protection requirements, the shield on any open-ended cable must be
grounded by attaching the shield to a convenient chassis ground point, using hardware
suitable to provide a solid electrical and mechanical connection. In addition, ensure that
there is sufficient strain relief to remove any mechanical strain on the ground connection
due to cable movement.
• The intra-building port(s) of the equipment or sub-assembly is suitable for connection to
intra-building or unexposed wiring or cabling only. The intra-building port(s) of the
equipment or sub-assembly must not be metallically connected to interfaces that connect
to the Outside Plant (OSP) or its wiring. These interfaces are designed for use as intra-
building interfaces only (Type 2 ports as described in GR-1089-CORE) and require
isolation from the exposed OSP cabling. The addition of primary protectors is not
sufficient protection in order to connect these interfaces metallically to OSP wiring.
Connection to external OSP wiring must be made through an external CSU prior to
exiting the building.
• Bare conductors must be coated with an appropriate antioxidant compound before crimp
connections are made. All unplated connectors, braided strap, and bus bars must be
brought to a bright finish and then coated with an antioxidant before they are connected.
• The 7705 SAR-8 is suitable for both DC-I and DC-C power configurations. However,
when used in a DC-I configuration, the battery returns must remain isolated until they
reach the main power bus.