Nortel Networks 1000M - Manual (Page 148)

148 Installing and connecting reserve power supplies for the Cabinet system
— provides a minimum of 15 minutes of reserve DC power
— mounts to the wall
— supports one system cabinet
• An Uninterruptible Power Supply (UPS) which will provide a continuous
AC power supply. Install this unit according to the manufacturer’s
instructions.
CAUTION
Service Interruption
If the NTDK70 AC power supply is powered down while it is
operating on DC reserve power from a battery backup unit, the
Cabinet system cannot be powered up again until AC power is
restored. Be careful not to open the circuit breaker, either on
the battery backup unit or on the NTDK70, while the system is
operating on battery backup.
NTAK75 battery unit installation
Follow the steps in Procedure 16 "Installing the NTAK75 battery unit" (page
148) to install an NTAK75 battery unit. Repeat the procedure for each
system cabinet being installed.
Note: The system external ground must be installed before installing
the battery backup unit.
Procedure 16
Installing the NTAK75 battery unit
Step Action
1 Unpack the NTAK75 battery unit and place it according to the
equipment layout plan.
• The battery unit must be a installed within 0.9 m (3 ft) of the
cabinet it is serving.
• Install to the side of or below the cabinet, not above.
• If installed below, the minimum clearance from the top of the
NTAK75 to the bottom of the wall-mounted cabinet is 0.6 m (2 ft).
• The battery unit should be installed in an open, well-ventilated
area.
• The area must meet the following temperature limits:
Maximum allowed range: 0 to 45¡C (32 to 113¡F)
Recommended range: 20 to 35¡C (68 to 95¡F).
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Installation and Commissioning
NN43011-310 01.04 Standard
Release 5.0 13 May 2008
Copyright © 2008, Nortel Networks
.