Three-phase column variable transformers (autotransformer, ± adjustment)
DESCRIPTION
REO variable column transformers with ± adjustment are the perfect solution in conjunction with REO transformers – enabling double the power.
The waveform of the sine wave is retained – so there are no EMC problems over the entire control range.
All products in the series are supplied with UL-listed materials.
The REO design enables easy handling and hysteresis-free adjustment of the output voltage, even at high adjustment speeds of the drive motor. REO column actuators are therefore perfect for high power adjustment.
REO-column type variable transformers conform to EN 61558-2-14
REO-column type variable transformers conform to EN 61558-2-14
ADVANTAGES
- High-precision adjustment (turn-to-turn voltage only approx. 0.7 V)
- Low-loss cores
- Vacuum impregnated windings
- Windings virtually maintenance free
- UL-listed materials
- Available in IP 00 and IP 20
- Wide range of accessories
| Input voltage | 3x 400 V |
| Output voltage | 3 x ± 0 – 400 V, 3 x ± 0 – 500 V |
| Output current | 3 x 8.7 – 208 A |
| Output power | 6.0 – 153 kVA |
| Frequency range | 50/60 Hz |
| Gearshift group | Star/Spar |
| IP Code | IP 00 – IP 20 |
| Input voltage | 3 x 400 V, 3 x 0 – 400 V, 3 X 0 – 660 V |
| Output voltage | 3 x ± 0 – 400 V |
| Output current | 3 x 21,5 – 557,0 |
| Output power | 15 – 384 kVA |
| Frequency range | 50/60 Hz |
| Gearshift group | Star/Spar |
| IP Code | IP 00 – IP 20 |
| Input voltage | 3 x 400 V |
| Output voltage | 3 x 0 – 400 V, 3 x 0 660 V |
| Output current | 3 x 84 – 336.0 A |
| Output power | 3 – 384 kVA |
| Frequency range | 50/60 Hz |
| Gearshift group | Star/Spar |
| IP Code | IP 00 – IP 20 |
| Manual drive by means of spindle | with supplement “SP” (vertical spindle) |
| Manual drive by means of spindle bevel gear drive | with supplement “SPW” (horizontal spindle) |
| Circuit ± | U |
| Motor drives | AC motor drive 230 V 50/60 Hz with supplement “MoK” DS motor drive 3 x 400/230 V 50/60 Hz with supplement “Mo” |
| Enclosure versions | Are also available in the standard protection class IP 20 in the standard RAL 7035 paint finish. |
| Output voltage | If the output voltage needs to be kept constant, REO has suitable controllers in its product range, e.g: NLR 7000 tracking controller for three-phase motors, NLR 2012 three-point controller for AC motors |
| Further special designs | on request |
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