IBM TotalStorage, Installation Manual

Page: 17 / 91

Steps:
Using the following inspection checklist as a guide, inspect the uninterruptible
power supply for unsafe conditions. If necessary, see any suitable safety
publications.
1. If any equipment has been damaged during the shipment, keep the shipping
cartons and packing materials.
2. File a claim for shipping damage within fifteen days of receipt of the
equipment.
Uninterruptible power supply requirements
This topic lists the requirements for the uninterruptible power supply.
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.
Emergency power-off (EPO) event
In the event of a room emergency power-off (EPO) shutdown, the SAN Volume
Controller completes the process of shutting down the output from the
uninterruptible power supplies within 5 minutes.
Attention: If an EPO event occurs and the uninterruptible power supply is not
connected to at least one operational SAN Volume Controller the output cables of
the uninterruptible power supply must be unplugged to remove output power
from the uninterruptible power supply.
Checking the safety labels on the SAN Volume Controller
The following topics describe how to check the labels on the SAN Volume
Controller.
Steps:
Perform the following label checks:
1. Agency/ratings label. See Figure 3 on page xvi.
About this guide
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