Emerson FS 510 VDC User Manual

• 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

LIEBERT FS FLYWHEEL ENERGY STORAGE SYSTEM - 190 KW, 10 SECONDS

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

Non-Operating
Temperature

Relative Humidity 5-95% non-condensing

Operating Altitude Up to 9,842 ft. (3,000m)

Acoustical Noise

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.

-4°F to 122°F
(-20°C to 50°C)

-4°F to 176°F
(-20°C to 80°C)

45 dBA in Ready Mode, measured

3.3 ft. (1m) from the unit

• 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.

Site Planning Data, Liebert FS Flywheel Energy Storage System: 190 kW, 10 Seconds

Recharge Discharge Rotational Speed Mechanical Data

Nominal Energy

Storage

1900 kW-seconds 50 520 190 10 510 25,000 55,500

See Notes for Table (below): 1 , 11 2, 11 4 4 3, 11 — — — — —

Max. Current

ADC

Nom. Voltage

VDC

Nom. PowerkWDuration

seconds

Nom. Voltage

VDC

Min.
rpm

Max.

rpm

Dimensions

W x D x H, in. (mm)

25 x 32.5 x 71

(635 x 826 x 1803)

Weight

Losses

lb. (kg)

1300 (590) <

(W)

300

Notes for Table

1. Recharge current shown is the maximum the Liebert FS can accept. This
value is dependent on the UPS, typically limited to 15% of the UPS’s nominal
full load DC current.

2. Recharge voltage is adjustable, 480 to 500VDC. 190kW requires >520VDC.

3. Discharge voltage is adjustable, 480 to 500VDC. 190kW requires >510VDC.

4. Discharge rates below 190kW increase the discharge duration time (see
Figure 1). In addition, the FS has the capability to discharge at rates above
190kW for shorter discharge durations. Please consult factory for details.

5. Power cable from UPS DC bus to Liebert FS should be sized for total
maximum 2.0 volt line drop (power cable plus return cable drop as measured
at the module) at maximum discharge current.

6. Grounding conductors to be sized per NEC 250-95.

7. All wiring to be in accordance with National and Local Electrical Codes.

8. Minimum clearance is 3 ft. (0.9m) in front and 1 ft. (0.3m) above the
Liebert FS.

9. Exterior cable entry available through removable top access plates: remove,
punch to suit conduit size and replace.

10. Control wiring and power wiring must be run in separate conduit.

11. When used with the Liebert Series 300, nominal recharge voltage is
395VDC, nominal discharge voltage is 385VDC, with adjustable range of 360
to 405VDC for both. Due to lower VDC, power output below 30 seconds must
be derated. Contact factory for details.

12. AC auxiliary power input required: 110/230VAC, 1 ph, 400VA.

Additional Notes

• If site configuration includes a backup emergency generator, it is recom-

mended that the engine generator is set to be properly sized and equipped for a
UPS application. Generator options would typically include an isosynchronous
governor (generator frequency regulation) and a UPS-compatible regulator
(generator voltage regulation). Consult the generator manufacturer for
required generator options and sizing.

Figure 1 DC bus power duration

1900 kW-sec delivered

GT model, 510 VDC, with filter

10 seconds at 190kW (max. power)

© 2007 Liebert Corporation
All rights reserved throughout the world.
Specifications subject to change without notice.

SL-29305_REV04_04-07

@ 510 VDC min

® Liebert and the Liebert logo are registered
trademarks of Liebert Corporation. All names referred
to are trademarks or registered trademarks of their
respective owners.

Liebert Corporation

1050 Dearborn Drive
P.O. Box 29186
Columbus, OH 43229

Telephone: [phone]
Facsimile: 1-614-841-6022
www.liebert.com