Three-phase column variable transformers (autotransformer, ± adjustment)
Description
REO column variable Transformers with ± adjustment, in conjunction with REO Transformers, provide the perfect solution – enabling twice 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 variable transformers comply with EN 61558-2-14
REO column variable transformers comply with 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 |
| Degree of protection | 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 |
| Degree of protection | 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 |
| Degree of protection | 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 |
All data and configurations can be found in our product datasheet.
