Eaton 93PR 500 kW UPS
User's and Installation Guide
9
2.1. Looking Inside the UPS System
The system level static bypass in the 93PR 500kW UPS UPS cabinet determines the attainable output power of the
UPS. The static bypass line consists of 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 power module includes a rectifier, battery converter, inverter and independent controls. The UPM is hot
swappable (Hot Swap) 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 internal maintenance bypass switch as default.
UPS includes a 600 kW rated static bypass section, maximum ten internal paralleled UPM modules, These units do not
include internal batteries. Figure
2-3
: 93PR 500kW UPSWiring Diagram.
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