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2 InfraStruXure Power Generation System
Warnings
The components in the InfraStruXure Power Generation System can pose life-threatening danger
when improperly installed, operated, or maintained. To prevent accidents, be aware of the dangers
and act safely. Read and follow all of the safety instructions and warnings in this manual and in all of
your component manuals.
The InfraStruXure Power Generation System is an optional standby system
The Generator and Automatic Transfer Switch (ATS) that you purchased from APC is classified as an
Optional Standby System because it provides backup or standby power to data centers in the event of
a sustained power failure.
The InfraStruXure Power Generation System is not to be classified as an Emergency System that is
essential for safety to human life (e.g., fire pumps, operating room and life-support equipment in
hospitals) as legally required by municipal, state, federal, or other governmental codes.
The InfraStruXure Power Generation System is not to be classified as a Legally Required Standby
System, as it is not supplying power to aid in fire fighting, rescue operations, control of health hazards
(e.g., sewage) and similar operations as required by municipal, state, federal, or other governmental
codes.
Emergency and Legally Required Systems are not allowed to rely on municipal fuel for operation, or
municipal water for cooling. Emergency and Legally Required Systems specify dual-fuel systems,
with one of them being a two-hour, on-site fuel supply.
Your InfraStruXure Power Generation System is not to be classified as an Integrated Electrical
System, as an orderly shutdown is not required to prevent damage to the generator. The generator is
not to be paralleled with another generator.
Your generator will operate at its rated load without being refueled for a minimum of six hours, and
should run with no load for a minimum of 12 hours.
Your generator can be without electrical power to the load terminals of the ATS for a maximum of 60
seconds, but will typically be without power for no more than 10 seconds.
Wire sizing
This product was designed to include an APC-manufactured 250-amp ATS. All wiring
recommendations were sized for this amperage in accordance with the National Electrical Code
(NEC). However, this does not prevent you from using the ATS at a lower amperage with smaller
wire sizes. If you decide to operate this ATS at a lower amperage, ensure that the wire sizes are in
accordance with NEC guidelines and your local codes.