Rotary Frequency
Converters

Enclosure type IP 23 / 54

Application areas

› In test fields or industrial plants, where a frequency, deviating from the existing network and  a low-harmonic supply  is needed
On ships to provide galvanically isolated, low-harmonic vehicle systems

Download

Product information flyer
Rotary Frequency Converters DRU/DBU
(PDF, 325 KB).

Download

Product information flyer
Rotary Frequency Converters ZASx/ZSSx
(PDF 235 KB).

Do you have any questions?
We will be pleased to help you.

Phone: +49 7243 3206-0
E-mail: info@eme-generatoren.de

› Rotary Frequency Converters 50/50 Hz – 50/400 Hz for a low-distorsion power supply

Rotary frequency converters consist of a synchronous generator and an electric drive, which, depending on the design, is an induction motor or a synchronous motor.

Due to the rotating frequency conversion, no distortions occur due to switching operations of power semiconductors. The quality of the output voltage is therefore far superior to static converters and in most cases even better than that of the public power grid. Mains and consumers are galvanically separated from each other.

Our frequency converters are manufactured in enclosure type IP 23 and IP 54 and in the frequency ranges from 50 to 400 Hz, in a monoblock design or as a machine set. According to the needs of our customers. The types in enclosure type IP 23 are enclosed ventilated machines. IP 54 machines are rib-cooled.

On request, complete systems with control cabinet are available. For noise-optimized systems, we also supply the converters with conversion hood.

› Qualities

Monoblock converters, DRU series

  • One housing, one common shaft
  • Enclosure type IP 54, rib cooled
  • Synchronous generator, induction motor
  • Good frequency stability, slip = 2%
  • Synchronous generator with electronic voltage regulator for voltage accuracy
    with 1 % variation
  • Converter suitable for parallel operation.

Power range DRU series, Induction motor – synchronous generator

Hz Speed 1/min. Power output kVA
50/200 3.000 7,5–45
50/300 3.000 7,5–45
60/300 3.000 7,5–45

Monoblock converter DBU/DBSU series

  • One housing, one common shaft
  • Enclosure type IP 23, enclosed ventilated
  • Synchronous generator, induction motor (DBU) or synchronous motor (DBSU)
  • Very good frequency stability: Induction motor with 1 % slip or synchronous motor slip=0
  • Synchronous motor with power-factor-controller, synchronous generator with electronic voltage regulator, voltage accuracy with 1 % variation
    and low distortion factor

Power range DBU series, Induction motor – synchronous generator

Hz Speed 1/min. Power output kVA
50/400 3.000 5–150
50/400 1.500 5–300
50/400 1.200 20-250
50/60 600 7,5–90
60/50 600 7,5–90

Power range DBSU series, Synchronous motor – synchronous generator

Hz Speed 1/min. Power output kVA
50/400 3.000 5–150
50/400 1.500 5–300
60/400 1.200 20–150
50/60 600 7,5-90
60/50 600 7,5-90

Motor-Generator sets ZAS/ZSS series

  • Set with drive-belts, clutch or transmission
  • Enclosure type IP 23, enclosed ventilated
  • Generator and motor on common steel base-frame
  • Very good frequency stability. Induction motor slip=1%, synchronos motor slip = 0
  • Low distorsion factor
  • Synchronous Motor with power-factor-controller, synchronous generator with elektronic voltage regulator, voltage accuracy 1%
  • Converter suitable for parallel operation

Power range ZASK series: Induction motor – synchronous generator, machine-set with clutch

Hz Speed 1/min. Power output kVA
50/50 1.500 70–600
60/60 1.800 80–650

Power range ZASR series: Induction motor – synchronous generator, machine-set with belt-drive

Hz Speed 1/min. Power output kVA
50/60 1.500/1.800 5–350
60/50 1.800/1.500 5–400

Power range ZSSG series: Synchronous motor – synchronous generator, machine-set with transmission

Hz Speed 1/min. Power output kVA
50/60 1.500/1.800 80–690
60/50 1.800/1.500 70–600

Power range ZASG series: Induction motor – synchronous generator, machine-set with transmission

Hz Speed 1/min. Power output kVA
50/60 1.500/1.800 80–690
60/50 1.800/1.500 70–600

Other versions available on request.