Variable-speed compressors

1107hvac09pTT400 series compressors use a 380-V, 50-Hz or 60-Hz power supply. Both models are oil-free, variable-speed, magnetic-bearing centrifugal compressors. Using HFC-134a refrigerant, the units are lightweight and are said to emit low sound and vibration.
Danfoss Turbocor Compressors Inc., Tallahassee, FL
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