Power Quality Products

voltage stabilizer

Stabilize voltage and avoid disruptions – dynamic and adaptable

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OSKAR – Dynamic mains voltage regulator

Stabilize voltage with low losses

OSKAR® is an active, three-phase grid voltage regulator with state-of-the-art power electronics. This voltage stabilizer (DVR, AVC) continuously and highly dynamically maintains the magnitude and phase of the grid voltage at the setpoint. Typical voltage dips are easily overcome, allowing the protected load to continue operating without problems. The system can be scaled to any power requirement by increasing the number of modules. The efficiency is approximately 98.5%.

High overload capacity, low operating and maintenance costs and the small space requirement make OSKAR a real alternative for the protection against short interruptions and voltage dips (KU, AWE).

Functions

  • Full compensation for undervoltages 3-phase up to residual voltage 70 % UN 1-phase up to residual voltage 55 % UN
  • Partial compensation in case of undervoltage 3-phase up to residual voltage 50 % UN
  • Uninterrupted “ONLINE” control

Technical data

  • Modular system concept
  • Network type 3-phase, TN
  • Rated power 300 kVA per module
  • Rated voltage 400-480 volts
  • Response time 140 µs
  • Efficiency > 98%
  • Overload capacity 150% (30 s)

Areas of application

  • Pharmaceutical industry (air conditioning technology)
  • Medical technology (MRI scanners, cardiac catheter robots, etc.)
  • Large industrial plants
  • Painting processes (voltage drops directly affect the paint thickness, control problems)
  • Grinding processes (voltage fluctuations affect the quality of the products)
  • Measurement technology (high-precision processes that require a stable network, e.g. testing of ABS systems)
  • Highly dynamic processes
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Advantages of the OSKAR voltage stabilizer

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Real-time voltage correction (<1ms)

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Grid short-circuit power remains
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Voltage dips up to 40% UN correctable
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Efficiency of > 98%
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Extended use possible
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Protection against voltage increases
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No storage required
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Little space required
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Low acquisition and maintenance costs

Continuous voltage regulation of overvoltages and undervoltages

 

Voltage dips often occur due to the connection of large loads, system faults, or existing fluctuations in the public power grid. These can cause significant operational disruptions. The OSKAR mains voltage regulator ensures continuous voltage regulation and reliably protects your business network from overvoltages and undervoltages.

The OSKAR is easy to use and based on an inverter system that protects sensitive industrial and commercial facilities from voltage-related disturbances. It enables fast and precise voltage regulation, reliably balances undervoltages and overvoltages, and compensates for load-related voltage fluctuations. OSKAR meets all system safety requirements and protects your grid even during severe voltage drops in AC supply networks.

With an efficiency of over 98 %, OSKAR is designed for loads up to 300 kVA. It also regulates the grid voltage within ±10 % and eliminates supply voltage imbalances.

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