About The Sps - Dell IP4700 Installation And Service Manual

The Standby Power Supply (SPS)
4

About the SPS

IP4700 Installation and Service Guide
4-2
Two 800-watt dc SPSs provide backup power for one IP4700. Two
SPSs provide for higher availability and allow write caching to
continue when an SPS is faulted or is not fully charged.
Each SPS has two phone-jack type connectors and status lights on the
right side of its rear panel.
IMPORTANT: Improper storage and handling of an SPS will render the
warranty null and void. Please see Appendix A for appropriate storage
requirements.
Figure 4-1 shows the SPS unit.
AC
power
connector
Figure 4-1 800-Watt DC SPS
SP
Power interface
switch connector
SPS
Replace
fault
battery
LED
LED
(amber)
(amber)
On-line
LED
(green)
On
battery
LED
(amber)
EMC1466