Infrastruxure power generation system, How the, Operates – American Power Conversion 250 A User Manual
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6
InfraStruXure Power Generation System
How the
InfraStruXure Power Generation
System
Operates
Operation of the ATS during a utility failure when automatic operation is enabled
Your data center equipment
is typically powered by the
utility [Source 1] (
), while
the generator [Source 2]
remains off. When the level
of incoming utility power
falls below a specified
threshold (
), the ATS
signals the generator to start
(
). After the generator
starts and attains the
necessary power to support
the load, the ATS performs
an open transfer to the
generator (
).
The generator then continues
to support your data center
equipment (
) until an
acceptable flow of utility
power is restored (
). The
utility power must remain
stable for a specified length of time (Line Stable setting) and the generator must run for at least the
duration of its minimum run-time (Min on Gen setting) before the load will be retransferred to the
utility (
). The retransfer to the utility can be either open or closed. Following retransfer, the
generator cools down (
) and eventually stops.
For more information.
See page 33 for a description of how the ATS determines the line quality is bad.
See page 7 for a detailed description of the generator start sequence.
See page 8 for detailed descriptions of open and closed transfers.
See page 7 for a detailed description of generator cool-down.
See page 35 for information about the Line Stable setting.
See page 35 for information about the Min on Gen setting.
Load
Powered by
Utility.
Generator
is Off
Generator
Cool-Down
Generator
Start
Sequence
Load
Powered
by Generator
Utility Failure
Generator Started
Open Transfer
to Generator
Utility
Restored
Retransfer to
Utility
(Open or Closed)
Generator Started
Generator Stopped