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Powerware Flywheel Solutions

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Wherever maximum productivity and system availability is critical, the Powerware PF2 battery-free energy flywheel storage system bridges the power gap, acting as a backup power or battery backup source during power quality or utility disturbances and acts as an effective UPS battery enhancement, battery backup system, or UPS battery replacement for traditional systems.

The Powerware PF2, a DC battery-free energy flywheel storage technology, is an integrated motor-generator-flywheel that stores kinetic energy in a constantly spinning, quiet, low friction steel disc. Compared to traditional UPS battery backup systems, the Powerware PF2 dramatically reduces space requirements, temperature restrictions, UPS battery replacement cycles, and maintenance costs while improving UPS system reliability and operational integrity.

Flywheel diagram

  • Flexible sitting

  • Reduced maintenance cost

  • Over 20 years of useful life

  • High power density in a small footprint

  • Non-toxic and non-corrosive

  • Real-time monitoring of over 25 system parameters

  • Only two terminal connections

  • Remote monitoring by PowerVision software

  • Maximum Availability

    • Powerware PF2 can parallel up to 8 flywheels to increase ride-through time or provide redundancy

    • N+1 upgradeable

    • Fast recharge time (under 150 seconds)

    • Long, useful life

    • Soft-start UPS integration

  • Maximum Reliability

    • Self-diagnostics

    • Remote notification (email and /or paging)

    • Remote monitoring (network and/or modem)

    • LCD monitor/control panel

    • Microprocessor-based monitoring system

    • Alarm status contacts

    • Log file store up to 2000 events

  • Maximum Performance

    • High power density (very small footprint)

    • 99% efficient

    • Quiet operation

    • No special facility requirements

    • Low maintenance cost

    • Adjustable voltage setting

    • Battery hardening capability

    • On-board DC disconnect

    • Simple plug and play installation

Input Specifications
Float voltage range 400 to 600 volts DC
Minimum charging current required 15 ADC (250 kW)
30 ADC (500 kW)
Output Specifications
Adjustable nominal discharge voltage range 360 to 550 volts DC
Maximum rated power between 480 VDC and 550 VDC
DC voltage regulation ±1% steady state
DC ripple <2%
Environmental Specifications
Operating temperature -20°C to 40°C
Non-operating temperature 0°C to 70°C
Relative humidity <95% non-condensing
Altitude Up to 4,000ft (1220 meters) with no derating
Audible noise 72 dBA at 1 meter; in accordance with ISO 7779
Typical heat dissipation <3 kW or 10,250 BTU (250 kW) or
<5 kW or 17,050 BTU (500 kW)
System Dimensions 42″W x 34″D x 78″H
(107 cm. W x 86 cm. D x 198 cm. H)
Cabinet Footprint 10 sq.ft. (.93 sq. m.) (no rear or side access required)
Weight 250 kW – 3,800 lbs. (1724 kgs.)
500 kW – 6,000 lbs. (2727 kgs.)

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