3.7 Battery system
The battery system provides short-term emergency backup power to safeguard
operation during brownouts, blackouts, and other power interruptions. By default,
UPS is configured to use VRLA batteries. If other type of batteries or other
energy storage means need to be connected, consult a certified service
technician prior to proceeding with the installation.
The Eaton 91PS/93PS 8–40 kW UPS are equipped with internal batteries to
provide full load runtime of 5–60 minutes depending on the UPS rating. This does
not apply to the C-model, which has no internal batteries. In addition, external
battery cabinets can be introduced to the system to allow extended autonomy.
Internal and external batteries can be used in parallel.
For detailed battery specifications, see Chapter 9.1 About technical data.
3.8 Basic system configurations
UPS power rating
The maximum attainable UPS system power rating is determined by the size of
the UPS cabinet frame. The number of UPM power modules determines the
nominal power rating of the UPS. If upgradeability is required, the system static
bypass should be chosen according to the future maximum load rating, and the
number of UPMs is chosen according to the Day 1 capacity requirements.
The following UPS configurations with different static bypass sizes and number of
UPMs are possible.
Table 4: 93PS UPS configurations
Description System
Power
[kW]
Power
modules
[kW]
Static
switch
[kW]
Internal battery
Single system configurations in the 93PS 20 kW frame size*
93PS-8(20)-xx 8 1*8 20 Yes/No
93PS-10(20)-xx 10 1*10 20 Yes/No
93PS-15(20)-xx 15 1*15 20 Yes/No
93PS-20(20)-xx 20 1*20 20 Yes/No
Single system configurations in the 93PS 40 kW frame size
93PS-8(40)-xx 8 1*8 40 Yes/No
© Eaton Corporation plc 2020. All rights reserved. Revision: 006 Document ID: P-164000493 32 (126)
Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide
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