Alcatel-Lucent 7705 - Wiring and Connecting DC Power; Warnings and Notes

DC Power Connections
Page 90 7705 SAR-8 Installation Guide
Wiring and Connecting DC Power
Warnings and Notes
Dangers:
• Only qualified personnel should install or replace this equipment.
• Confirm that the DC power source is OFF during installation. The power source should be
a safety extra-low voltage (SELV) source.
• Turn OFF power at the power source before you install or remove power cables or cords.
• The unit should be connected to a DC branch circuit with a circuit breaker or fuse that
meets the requirements for branch circuit protection, as follows:
→ for –48 VDC systems: 5 A (minimum) and 10 A (maximum)
→ for +24 VDC systems: 10 A (minimum) and 20 A (maximum)
• A suitable disconnect device must be provided in the DC branch, either a circuit breaker
or switch that can be employed to disconnect power to the system during servicing.
• Before working on equipment that is connected to power, remove jewelry, such as rings,
necklaces, and watches. When metal objects are in contact with power and ground,
serious burns can occur or the objects can be welded to the terminals.
• You must use cables that meet local electrical code requirements.
Warnings:
• Do not install equipment that appears to be damaged.
• The router and equipment rack must be properly grounded. Electrostatic discharge (ESD)
damage can occur if components are mishandled.
• Always wear an ESD-preventive wrist or ankle strap and always connect an ESD strap to
a nearby ground point that is connected to the site grounding point (typically, the
grounding stud on the 7705 SAR-8, or a properly grounded rack or work bench).
• For IBN installations, the battery return terminal(s) on the 7705 SAR-8 must always be
connected to the building ground at the power source. For redundant supply
configurations, separate battery return wires must be used.
• For CBN installations, the battery return terminal should be connected to chassis ground
at the chassis or frame.
Notes:
• The 7705 SAR-8 requires a minimum of one DC power source to operate, but using two
DC power sources is recommended for redundancy.
• The 7705 SAR-8 is suitable for both DC-I and DC-C power configurations.
• All 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 connecting them.