Overview of the HRPSU
114312 Rev. C
1-3
Hot-swap connectors on each power supply module connect the input and output
signals of the power supply to the power rack backplane. The hot-swappable
feature allows you to install the HRPSU without turning off the power to the
network devices. Redundancy is provided with no down-time on the network.
A safety door inside each power supply slot prevents hands or other objects from
touching the connector on the backplane. In Figure 1-2, the open slot on the right
shows a safety door in locked position. The open slot on the left shows the power
supply connector on the backplane.
When you insert a power supply module into the slot, the flange on the rear of the
module releases the safety door, allowing the module to connect to the backplane.
The module’s power switch, located on the front panel, is recessed deeply to
prevent you from accidentally turning off the module.
Figure 1-3 shows the rear of the HRPSU power rack. Each power supply slot is
identified by a number (1 - 4) stamped into the metal at the back upper edge of the
HRPSU power rack.
Figure 1-3.
Rear View of HRPSU
HRP0002A
1
2
3
4
Connector
Standoffs
24-Pin Output Connector
Power Supply
Module ID numbers
AC
Power Plug
AC
Power Switch
UL
UL
