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Voltsafe PLUS - Three Phase Oil Cooled
Voltsafe PLUS Three Phase Oil Cooled is a 100–300 kVA servo stabilizer engineered with advanced MCU and integrated SMPS technology for continuous operational performance in high-capacity three-phase applications. True RMS sensing enables precise voltage regulation even in adverse waveform conditions, and a firmware-controlled buck-boost transformer achieves greater than 97% AC-AC efficiency. ONAN (Oil Natural Air Natural) cooling using Transformer Insulation Oil to IS 335 EHV Grade provides efficient heat dissipation for heavy-duty, continuous-duty installations. With a correction speed of 50 V/sec and robust protection against phase failure, overload, surge and oil level monitoring, it is optimal for medical equipment, CNC machines, industrial automation systems, home appliances, fitness equipment, IT peripherals and critical desktop publishing equipment. It is IS 9815 compliant and generator compatible.
- 100–300 kVA three-phase servo stabilizer – oil cooled
- Advanced MCU-based technology with integrated SMPS
- True RMS sensing for precise regulation in adverse waveforms
- ONAN cooling: Transformer Insulation Oil IS 335 EHV Grade
- Correction speed: 50 V/sec (Ph-Ph); response time
- Normal range: 340–480 V; Wide range: 310–480 V; AC-AC efficiency > 97%
- 2-line LCD display; oil level indicator; IS 9815 compliant; generator compatible
Best Suited For
Advanced MCU with true RMS sensing
Digital MCU-based control with true RMS sensing delivers accurate voltage regulation even under non-linear and adverse waveform conditions typical in large industrial and commercial installations.
ONAN oil cooling for heavy-duty operation
Oil Natural Air Natural (ONAN) cooling using Transformer Insulation Oil to IS 335 EHV Grade provides efficient heat dissipation, enabling continuous heavy-duty operation in high-capacity environments where air cooling alone is insufficient.
Firmware-controlled buck-boost transformer (> 97% efficiency)
A firmware-optimised buck-boost transformer achieves greater than 97% AC-AC efficiency, reducing energy losses and operating costs over the life of the installation.
Fast correction speed (50 V/sec, response < 20 ms)
A correction speed of 50 V/sec (Ph-Ph) and response time of less than 20 ms protect sensitive and high-value equipment from the damaging effects of rapid voltage swings.
Comprehensive high-capacity protection suite
Provides protection against phase failure, single phase prevention and cut-off, neutral failure, frequency cut-off (low/high), surge, input/output over- and under-voltage, overload (electronic trip), short circuit (MCB/MCCB), carbon brush failure, phase reversal trip and oil level monitoring.
2-line LCD display with per-phase metering
Displays line-line and line-neutral input/output voltages per phase, load current, output frequency, fault annunciation and events for comprehensive on-site monitoring of large installations.
Frequently Asked Questions
At 100–300 kVA, ONAN (Oil Natural Air Natural) cooling provides more efficient heat dissipation than air cooling alone, supporting continuous heavy-duty operation without thermal de-rating.
Transformer Insulation Oil to IS 335 EHV Grade is used, ensuring safe and efficient heat dissipation in accordance with Indian standards.
It supports a Normal range of 340–480 VAC and a Wide range of 310–480 VAC, covering standard three-phase grid conditions.
Yes. It is designed for generator compatibility and includes an oil level indicator for safe continuous operation.
