Alcatel-Lucent 7705 - DC-Input Power Connections; Wiring the DC Inputs

DC Power Connections
7705 SAR-8 Installation Guide Page 91
DC-Input Power Connections
Wiring the DC Inputs
The 7705 SAR-8 has two D-Sub 2W2 connectors mounted on the front of the chassis. These
connectors are the DC power feed points for DC source voltage from the DC circuit. The
following wiring harnesses are available from Alcatel-Lucent to facilitate the DC source-to-
router connection. They can be used for either –48 VDC or +24 VDC installations:
• 4 m (13 ft) – part number 3HE03400AA
• 8 m (26 ft) – part number 3HE03400BA
• 12 m (39 ft) – part number 3HE03400CA
The harnesses each have a 2W2 connector at one end and open-ended wires at the other end,
and are #12 AWG (4 mm).
For redundant power configurations, you must use two DC power feeds (one for each power
connector on the 7705 SAR-8).
Each 2W2 connector is keyed to ensure proper attachment (one female and one male pin)
and is secured with thumbscrews on the harness connector to prevent accidental removal.
Figure 22 shows the DC power harness.
Dangers:
• Ensure that all power is OFF from the DC circuit. Locate the circuit breaker or fuse on the
panel board that services the DC circuit and switch the circuit breaker to the OFF position
or remove the fuse. For extra safety, you can tape the handle of the circuit breaker in the
OFF position.
• When wiring the unit, the chassis ground connection must always be made first and
disconnected last.
Note: The minimum AWG power conductor for the DC input connections must be based on
the application, and on the local codes, practices and regulations applicable for the region
.