Operating Modes - IBM 11000VA Manual

The UPS does not include an input line cord. The line cord is hardwired to a terminal block on the rear of
the UPS. A licensed electrician will need to connect the units to a dedicated branch circuit. Circuit
requirements are listed in the
Guide
.

Operating modes

The UPS has selectable high efficiency, normal (double conversion), and converter modes of AC
operation.
In high efficiency mode, the UPS monitors incoming power and stands ready to automatically transfer to
normal (double-conversion) mode as needed. In this operation mode, the UPS can operate at up to 96%
efficiency under normal conditions, and 93% or greater efficiency when poor power conditions require the
UPS to work harder. As a result, the UPS uses less energy and dissipates less heat, which in turn
reduces power and cooling costs. This mode protects against these power faults:
Power failure
Power sag
Power surge
Under voltage
Over voltage
In normal (double conversion) mode, the UPS supplies filtered utility power, protecting the connected
equipment from all nine of the most common power problems. Normal (double conversion) mode provides
extra protection against four additional line quality irregularities:
Harmonic distortion
Line noise
Switching transients
Frequency variation
In converter mode, the UPS supplies the load from utility power while acting as a frequency converter,
locking the UPS into a stable output frequency and transferring to battery mode as necessary. Use
converter mode to lock the UPS output frequency at 50 Hz or 60 Hz to suit power-sensitive equipment, or
to provide 50 Hz output when the available standard utility input is 60 Hz (or the reverse).
Three additional modes are available:
Battery mode, where the UPS operates on battery (typically when utility power has failed)
Bypass mode, where the battery is disabled (typically for the purposes of battery maintenance)
Standby mode, where the UPS is turned off
Features
The IBM 11000VA LCD 5U Rack UPS has the following features and capabilities:
Occupies 5U of vertical rack space.
Up to 96% energy efficiency in high efficiency mode at 100% load or 93% or greater efficiency in
normal (double conversion) mode
Operates in one of three modes: Normal, high efficiency or converter mode, as described above
Offers eight IEC 320 C19 receptacles
Bundled intelligent IBM UPS Manager software enhances control and manageability.
IBM 11000VA LCD 5U Rack Uninterruptible Power Supply
IBM 110000 VA UPS and 11000 VA EBM Installation and Maintenance
3