Cleansource hd

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UPS Systems

CleanSource® 750HD

Active Power’s CleanSource 750HD delivers unmatched power density,
reliability, and TCO. It builds on our field-proven flywheel CleanSource UPS,
scaled up to make it the perfect fit for today’s data centers. CleanSource
750HD also introduces a new level of reliability and design flexibility with
the Extended Runtime option, supporting up to 15 minutes of runtime.



Resource Library

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System Options

The right fit for the right job.

480V Systems400V Systems

System Operation

The perfect sine wave.

Flywheel 101

Flywheel 101

The key to CleanSource 750HD’s unmatched value is Active Power’s patented
integrated flywheel UPS technology.

Flywheel systems store kinetic energy – energy produced by motion – by
constantly spinning a compact rotor in a low-friction environment. When
short-term backup power is required because utility power is lost, the inertia
allows the rotor to continue spinning and the kinetic energy is converted to
electricity. CleanSource 750HD provides up to a minute of UPS runtime,
depending on the load and level of UPS redundancy, providing more than enough
time for backup diesel generators to start and support the load.

  • 12.5″ high; 25.5″ in diameter; 1700 lbs
  • Constantly spins at ~ 7,700 rpm
  • Rough vacuum to reduce losses
  • Stores 10.5 MJ of energy
  • 20 year life

Online Architecture

System Operation
CleanSource 750HD uses a flywheel-based power module as
its basic building block . Each module is rated at 750 kVA / 675 kW. The
flywheel machine is integrated into Active Power’s Parallel Online Architecture
to provide an energy efficient, reliable, and high performing UPS system.
CleanSource 750HD systems can be paralleled for redundancy or capacity,
supporting up to 3 MW of backup power in a single paralleled system.

Power Quality

Power Quality

CleanSource 750HD provides clean, reliable power to your data center,
protecting critical operations against all nine IEEE power disturbances.
CleanSource 750HD senses input power deviation from nominal, eliminates
transients and corrects the output to the prevailing nominal. Upon a complete
loss of input power or a major deviation in input voltage or frequency, the UPS
will disconnect from the utility source and the flywheel stored energy will be
used to support the load until the backup diesel generator comes online.
Further, CleanSource 750HD provides fully online power protection that combines
high efficiency without sacrificing performance.

Innovative Design

Power QualityCleanSource 750HD was designed from the start to be the most
innovative, efficient, and compact UPS in its class. CleanSource 750HD supports
675 kW of backup power in just two cabinets consuming 35 square feet of floor
space – less than half its leading competitors.

The primary source of the compact design is the flywheel energy storage
system. It packs 10.5 MJ of energy into a 3’ x 3’ x 3’ package rather
than 4 or more bulky and expensive battery cabinets.

CleanSource 750HD has also been designed with ease of installation,
operation, and service in mind:

Extended Runtime

Power Quality

For applications requiring additional UPS autonomy, CleanSource 750HD
supports an Extended Runtime option. Standard valve-regulated lead acid (VRLA)
batteries supporting up to 15 minutes of additional energy storage supplement
the flywheel to provide additional flexibility and reliability to your

If a power disturbance occurs with Extended Runtime in place, CleanSource 750HD
first draws on flywheel energy to support the load and switches to battery
power for longer outages. Extended Runtime provides extended runtime in the
event of a complete utility failure, and enhances overall battery reliability
by eliminating short duration battery discharges, a primary factor in battery
degradation. Further, the flywheel and batteries are independent energy storage
systems, with either being capable of supporting the load in case of a
disturbance. This dual energy storage approach creates the most reliable UPS system available.

Display & Monitoring

CleanSource Display The CleanSource 750HD system features a state-of-the-art
operator interface to provide users with maximum visibility to system status,
performance, events and maintenance requirements. The brilliant 10″ LCD display
and intuitive touch-screen control make it easy to view any level of detail in
one of 10 languages.

In addition, Active Power’s CleanSource View (CSView™) monitoring and control
software enables real-time system visibility from virtually anywhere. By
utilizing common data and connectivity with our CSView monitoring and control
software and data integration options to your Building Management System (BMS),
CleanSource 750HD provides you the degree of system visibility and service that
you need to manage your critical power infrastructure.

Key Benefits

An UNMATCHED Combination.

Power Density

CleanSource Display

CleanSource 750HD supports nearly 20 kW per square foot vs. under 9 kW per
square foot for battery-based UPS, more than double the power density of
traditional solutions. All told CleanSource 750HD consumes just 35 square feet
of floor space – less than half its leading competitors.
The primary source of the space savings is the absence of expensive and bulky
battery cabinets that can double the amount of space your UPS system takes up.
Further, CleanSource 750HD’s environmental tolerance is tremendously robust
compared to batteries, tolerating ambient temperatures up to 40C and reducing
the cooling requirements of your electrical system.


Power Quality

The integrated flywheel energy storage at the core of CleanSource 750HD
makes it inherently reliable, delivering predictable, consistent backup power.
The normal state of CleanSource 750HD is with the flywheel spinning constantly,
storing kinetic energy. When called upon during a utility outage, the flywheel
is ready to assume the load. By contrast, battery failures are the leading
cause of UPS load loss and system downtime.

The Extended Runtime option further increases the reliability and availability
of your UPS. By adding a second energy storage source, Extended Runtime makes
CleanSource 750HD the most reliable UPS system available.

Power Quality

Total Cost of Ownership

CleanSource 750HD combines a competitive first cost with lower ongoing
operating expenses – up to 30% lower than traditional UPS over 5 years. The
result is a dramatic TCO benefit for your data center, with net savings to you
on day 1 of operation.

  • Superior energy efficiency – over 96% efficient at 40% load
  • Reduced cooling needs – no need for dedicated cooling for
  • Lower maintenance requirements – routine annual check-up and bearing
    change every 3rd year
  • No battery changes – integrated flywheel with 20 year life

Service & Maintenance

When Downtime isn’t an Option.

Maintenance Services

CleanSource Display

Regular maintenance and service prevents potential small problems from
becoming issues that cause costly downtime. Active Power has designed the
CleanSource 750HD with ease of maintenance in mind to ensure your critical
power infrastructure operates with the utmost reliability. Unlike battery-based
systems, which require monthly or quarterly inspections to ensure reliability,
CleanSource 750HD requires only simple and non-invasive annual maintenance and
a bearing change every third year. This streamlined maintenance schedule both
restores your UPS to factory-like condition and reduces downtime during its
operating life, improving the availability of your data center.

Warranty & Service Plans

PowerService Maintenance Programs

Active Power’s limited warranty guarantees no-cost repair labor and parts
for 12 months after system installation. Additional extended warranty options
are available.

Active Power offers flexible service plans designed to meet individual
customer needs over the life of the system. Select the plan tailored to best
meet your needs and be assured that everything will be taken care of by a
qualified, certified Active Power technical support engineer.

In addition, PowerService plans provide a number of benefits beyond quality
technical support, including:

  • Lower, predictable costs
  • Flexible payment options
  • Priority scheduling and response

Power Quality

Professional Services

Rely on our trained professionals for expert assessment, implementation,
maintenance and support during every phase of your critical infrastructure
system deployment and operation. Whether you are looking at a standalone
UPS system or a complete turnkey infrastructure solution, we can assist from
start to finish.