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LIEBERT FS FLYWHEEL ENERGY STORAGE SYSTEM - 190 KW, 10 SECONDS
The Liebert FS is a technologically advanced DC energy storage system that utilizes a rotating mass as a
means for storage. Over 10 years and millions of dollars of development have resulted in a safe, efficient
product that can be used in place of or in parallel with batteries. Stored energy is available immediately
and released upon demand—up to 190kW is available for up to 10 seconds and can be used to:
• Ride through short power outages without the need to go to battery or generator
• Provide enough time to place generators on line during prolonged blackouts without the need for batteries
• Parallel with battery strings to provide extended backup time, battery life and reliability
The Liebert FS consists of several modules. The Flywheel Module contains technologically advanced
components. Supported by an active magnetic levitation system (Magnetic Levitation Module), the
carbon composite flywheel rotates within two containment vessels that make up a low-loss and extremely
safe operating environment. The Power Conversion Module is a bi-directional high-frequency
converter that provides a regulated output to the DC bus during discharge and becomes a source for a
variable frequency/voltage to drive (spin) the flywheel during recharge. The Power Conversion Module
Controller monitors and keeps all components within safe operating limits. FS units may be paralleled
for additional power or time.
A circuit breaker for disconnecting means (manually or automatic) is standard in the Liebert FS. Also
standard is an LCD user interface that displays the system’s operating status. Soft keys on the user
interface provide control of the unit. Additional monitoring and control options are available.
With its quiet operation, relatively small dimensions and weight of 1300 lb. (590 kg),
the Liebert FS may be installed in any typical electrical equipment environment.
Installation is simple—power and control wiring are the same as those found in
Liebert Battery Cabinet installations.
General Specifications
INPUT OUTPUT
Voltage 520VDC, Nominal (Recharge) Voltage 510VDC, Nominal (Discharge)
Voltage Range 480 to 540VDC Voltage Range 480 to 540VDC
ENVIRONMENTAL STANDARDS
Operating
Temperature
-4°F to 122°F
(-20°C to 50°C)
• UL listed to the following Standards:
• UL 1248, Standard for Engine/Generator Assemblies
• UL 508, Standard for Industrial Control Equipment
• UL 1004, Standard for Electric Motors
• CSA C22.2 No. 14-95, Industrial Control Equipment
• Meets current global requirements for safe, high-performance
operation.
Non-Operating
Temperature
-4°F to 176°F
(-20°C to 80°C)
Relative Humidity 5-95% non-condensing
Operating Altitude Up to 9,842 ft. (3,000m)
Acoustical Noise
45 dBA in Ready Mode, measured
3.3 ft. (1m) from the unit
• Carbon Fiber Flywheel
• 5-Axis Active Magnetic
Levitation System
• Integrated, Low-Loss
Vacuum System
• Synchronous Reluctance
Motor-Generator
• Integrated Safety System
• 5-Year Parts Warranty