Specifications

EATON CORPORATION UPS and Power Quality Products Catalogue
10
Energy Advantage Architecture – Energy Saver System
Energy Advantage
Architecture (EAA)
The rising demand for highly available, reliable and efficient power is a
continuous challenge for data centre operators. Higher energy efficiency
helps to address increasing environmental, regulatory and economic
pressures.
Eaton has developed innovative and proprietary technologies that
improve system efficiency without compromising on reliability under the
Energy Advantage Architecture (EAA) umbrella.
Energy Saver System (ESS) is one of these technologies.
Maximised energy efficiency
With 85% reduction in UPS energy losses, ESS technology dramatically
reduces energy consumption, environmental impact and power costs
without compromising load protection. Those outstanding energy savings
typically recovers 100% of the UPS cost over a 3 - 5 year period.
No compromise on reliability
In ESS mode the UPS safely provides mains current directly to load when
the input is within the acceptable limits by its voltage and frequency. If
input power goes outside the preset limits by frequency or voltage, the
UPS switches to double conversion.
If input power is outside the tolerances of the system, the UPS draws
power from available battery modules.
Superior detection and control algorithms continuously monitor incoming
power quality and allow the UPS to engage power converters in less
than two milliseconds time when utility source goes out of pre-defined
limits by its voltage or frequency, thus always providing secured power
to the critical load while maximising efficiency. In case of UPS detecting
a fault condition while operating in ESS, the UPS is capable to detect and
determine whether the fault is caused by load or if it is upstream from
the UPS. A fault at the bypass source results in immediate switchover to
the inverter; a fault in the load keeps the UPS in Energy Saver System.
Proven Eaton technology ensures reliability and continuous load
availability without compromising the protection of the supported
equipment.
ESS allows for market leading 99 percent efficiency
across the entire operating range. Compared to conventional ‘eco-mode’
capabilities available with legacy products, ESS offers the best possible
efficiency and the fastest transition times to double conversion when
power disturbances occur.
Extensive configurability
Eaton UPS with Energy Saver System features three configurable modes
of operation:
• Standard double conversion mode: the UPS operates as normal,
supplying power through the power converters
• Energy Saver System: the power converters are in ready state and the
static bypass switch allows the UPS to supply mains power directly
• High Alert mode: the UPS automatically transfers from ESS to double
conversion and in case of multiple reoccurring utility line disturbances
it stays there for preconfigured time (default 1 hour) until it is safe to
return to ESS
UPS seamlessly executes transitions through different operating modes
as needed. This is only possible with transformer-free topologies.
Availability
ESS is available to all 93PM and PowerXpert 9395 UPSs. Also parallel
UPS systems support operation in ESS mode. All earlier made
installations can be upgraded with ESS capability.