Eaton 93PS - Page 20

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Figure 3: Looking inside the 30/40 kW frame

1. Control panel

2. Door latch

3. Power module (UPM)

4. Internal battery (not included

in the C- model)

5. Communications area

6. Input switch (optional in some

regions)

7. Battery breaker for internal

batteries *

8. Maintenance bypass switch

(optional)

*) In the C-model for external batteries

The system level static bypass in the UPS cabinet determines the attainable

output power of the UPS. The static bypass line consists of a static switch and a

backfeed protection isolation device connected in series. In addition, there is a

system level control unit that constantly monitors the power delivered through the

bypass line or to the input of the UPS. Transfers to static bypass are seamless

and performed automatically by the system as needed, for example, in case of an

extended system overload.

Each UPM includes a rectifier, battery converter, inverter and independent

controls. Each UPM is able to operate and share the load independently, despite

the status of the other UPMs.

In addition, the system can have a UPS-internal maintenance bypass switch as a

factory-installed option.

Table 3: UPS configurations

UPS frame Number of UPMs

Static switch [kW] Internal battery

93PS 20 kW 1 20 Yes

93PS 20 kW C-

model

1 20 No

93PS 40 kW 1 or 2 40 Yes

91PS 15 kW 1 15 Yes

Eaton 91PS/93PS UPS 8–40 kW User’s and Installation Guide

Other manuals for Eaton 93PS