Three-phase column variable transformers (economy winding, IP 00)
Description
The REO column variable transformers supplement the REOVAR series for currents up to 1000A for fine adjustment of the output voltage with constant current at the output.
The waveform of the sine wave is retained – so there are no EMC problems over the entire adjustment range.All products in the series are supplied with UL-listed materials, the REO design enables easy handling of the carbon roller and spindle and the copper bevel gear drive allows hysteresis-free adjustment of the output voltage even at high adjustment speeds of the drive motor. This makes REO column actuators perfect for high power adjustment.
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 , 3x 500 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 | 3x 400 V |
| Output voltage | 3 x 0 – 400 V, 3 x 0 – 690 V |
| Output current | 3 x 21.5 – 557.0 A |
| Output power | 15 – 400 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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