IBM TotalStorage, Installation Manual

Page: 45 / 91

Attention: Ensure that you comply with the following requirements for
uninterruptible power supplies:
v
Each uninterruptible power supply should be connected to a separate
branch circuit.
v
A UL listed 15 A circuit breaker must be installed in each branch circuit that
supplies power to the uninterruptible power supply.
v
If a rack power distribution unit is used, each uninterruptible power supply
must be connected to a separate power distribution unit.
v The voltage supplied to the uninterruptible power supply must be 200–240
V single phase.
v
The frequency supplied must be between 50 and 60 Hz.
Note: If the uninterruptible power supply is cascaded from another
uninterruptible power supply, the source uninterruptible power supply
must have at least 3 times the capacity per phase and the total
harmonic distortion must be less than 5% with any single harmonic
being less than 1%. The uninterruptible power supply also should have
input voltage capture that has a slew rate faster than 3 Hz per second
and 1 msec glitch rejection.
10. All front panel indicators of the uninterruptible power supply flash for a short
time while the uninterruptible power supply runs a self test. When the test is
complete, the mode indicator
1
flashes to show that the uninterruptible
power supply is in standby mode (see Figure 26).
Press and hold the uninterruptible power supply on switch
2
until you hear
the uninterruptible power supply beep (approximately one second). The mode
indicator stops flashing and the load level indicators display the percentage of
load that is being supplied by the uninterruptible power supply. The
uninterruptible power supply is now in normal mode, and is charging its
battery.
If the mode indicator is flashing red and the alarm is sounding, the voltage
range alarm setting might not be correct. When a SAN Volume Controller is
connected to the uninterruptible power supply, the SAN Volume Controller
automatically adjusts the voltage range settings. Take no action for this alarm
condition unless it persists for more than five minutes after a SAN Volume
Controller has been connected to this uninterruptible power supply and
powered on.
11. Repeat this entire procedure to install the other uninterruptible power supply.
+ - + -
25%
100%
2
1 1
Figure 26. Power switch and indicators of the uninterruptible power supply
Chapter 4. Installing the uninterruptible power supply, the master console, and the SAN Volume Controller
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