Specifications

Power Supply Unit Load Requirements
(continued)
Unit Load Calculation Rules (continued)
Installed
Mode
Modules
Calculation
Square
5 or more
■ Use the “Unit Load Rating of
Key/
System Modules” table and
Behind
instructions below to determine
Switch
the estimated ULs:
■ If ULs equal 54 or less, an
Auxiliary Power Unit 9024 is
not required.
■ If ULs exceed 54, use “Unit
Load Rating of System
Modules” table to determine
the actual ULs for the system.
■ If the actual ULs exceed 54,
try to exchange modules
between carriers to reduce the
ULs below 54.*
■ If the modules cannot be
exchanged to reduce the ULs
below 54, an Auxiliary Power
Unit 9024 is required.
* Empty slots are not permitted between modules.
Page 50