Variable Transformers
The Variable Transformer Rectifiers are based on variable transformer technology. This proven technology assures high quality DC currents with a constant ripple of 5% throughout the whole output range. In addition to very robust and durable construction, these power supplies also offer high efficiency and good mains response (sine-wave form, no harmonic distortion).
MVO Oil-Cooled Variable Ratio Rectifier
Robust enclosure highly protecting against harsh environment
Electronic adjustment (wear-free)
Constant 5% output ripple
Control via analog signals or field bus system
High efficiency
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Oil cooled systems are a strong and reliable solution for applications in harsh industrial environments. These designs allow a more compact integration of power. The main components are built into a corrugated steel tank. The heat losses are convected through the corrugated surface.The adjustment of these rectifiers is done by means of a motor driven variable transformer.
Features:
- Robust construction
- Excellent mains response
- Easy maintenance
- Excellent price/performance ratio
- Great for difficult industrial conditions
Standard Technical Data:
| Mains Voltage | 3 x 208VAC-600VAC 50/60 Hz (other voltages available upon request) |
| Adjustment | Stepless from 0 – 100% |
| Ripple | 5% at Full Load |
| Duty Factor | 100% |
| Ambient Temperature | > 95°F |
| Surface Finish | Structural laquer |
| Supervision | Oil temperature Overcurrent relay |
Oil/Water-Cooled Variable Ratio Rectifiers
Electronic adjustment (wear-free)
Constant 5% output ripple
Control via analog signals or field bus system
Robust construction
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Oil/water-cooled systems are a strong and reliable solution for applications in harsh industrial environments. These designs allow a more compact integration of power. The main components are built into a corrugated steel tank. The heat losses are transferred through a heat exchanger allowing an external cooling water circuit to remove the heat. The adjustment of these rectifiers is done by means of a motor driven variable transformer.
Features:
- Robust construction
- Easy maintenance
- Excellent price/performance ratio
- Perfect for application under difficult industrial conditions
Standard Technical Data:
| Mains Voltage | 3 x 208VAC-600VAC 50×60 Hz (other voltages available upon request) |
| Adjustment | Stepless from 0 – 100 % |
| Ripple | 5% at Full Load |
| Duty Factor | 100% |
| Ambient Temperature | > 95°F |
| Water Entry Temperature | Approx. > 60°F – > 85°F |
| Operating Altitude | Up to 3280 ft. above sea level |
| Surface Finish | Structural laquer |
| Supervision | Oil temperature Overcurrent relay |