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The Eaton® 91PS/93PS uninterruptible power supply (UPS) is a true online, continuous-
duty, transformerless, double-conversion, solid-state, single-phase (91PS) or three-phase
(93PS) system. It supplies conditioned and uninterruptible AC power to critical load and
protects it from power failures. Eaton 91PS/93PS output power ratings are based on 15 kW
or 20 kW rated uninterruptible power modules (UPMs).
91PS/93PS is also available as a C-model, which consist of the electrical part of the
91PS/93PS UPS 15/20 kW frame without the battery compartment.
Table 1. UPS cabinet ratings
UPS frame
Picture
(Illustration 1)
Number of UPMs
Ratings
91PS 15 kW
A and B
1
8, 10, 15 kW
91PS 30 kW
C
1 or 2
8, 10, 15, 20, 30 kW
93PS 20 kW
A and B
1
8, 10, 15 or 20 kW
93PS 40 kW
C
1 or 2
8, 10, 15, 20, 30 or 40
kW
The main parts of the 91PS/93PS UPS 8-40 kW are shown in illustration 2. The main parts
are as follows:
1.
Control panel
2.
Door latch
3.
Power module (UPM)
4.
Internal battery (not in C-models)
5.
Communications area
6.
Input switch
7.
Battery breaker
8.
Maintenance bypass switch (optional)
.
DANGER
This UPS carries lethal voltages.
Operations inside the UPS must be done by an authorized Eaton Customer Service
Engineer or by qualified service personnel authorized by Eaton. There are no user-
serviceable parts inside the UPS.
For complete safety instructions, refer to the Eaton 91PS/93PS UPS 8-40 kW User’s and
Installation Guide.
The UPS must be installed according to the recommendations in the Eaton 91PS/93PS
UPS 8-40 kW User’s and Installation Guide.
Use the following basic sequence of steps to install the UPS:
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