200 KVA Servo Voltage Stabilizer
Three Phase · ±1% Accuracy · 98.5% Efficiency
Enterprise-grade voltage regulation for large manufacturing plants, steel processing facilities, automotive assembly lines, and heavy industrial infrastructure. Oil-cooled design ensures continuous 24/7 operation under the most demanding conditions.
What is a 200 KVA Servo Voltage Stabilizer?
A 200 KVA servo voltage stabilizer represents the highest tier of industrial power conditioning for large-scale manufacturing and infrastructure operations. The "200 KVA" rating signifies a capacity of 200,000 Volt-Amperes, translating to approximately 160 KW of active equipment load (assuming 0.8 PF) with substantial inrush capacity for heavy motor starts.
This capacity class is designed for plant-wide protection of large factories, steel mills, and industrial complexes. As a premier 200 KVA stabilizer manufacturer in India, Voltapex engineers these units to serve as the primary power conditioning stage for entire industrial facilities, process plants, and critical infrastructure. The oil-cooled construction features large transformers immersed in high-grade insulating oil within a robust tank, providing exceptional thermal mass, dielectric isolation, and decades of reliable operation with minimal maintenance intervention in harsh industrial environments.
Applications of 200 KVA Stabilizer
- Steel Plants & Rolling Mills: Stabilizes power for large induction furnaces, rolling mill drives, and continuous casting lines.
- Automotive Assembly Plants: Plant-wide protection for robotic assembly lines, welding stations, and paint shops.
- Heavy Engineering Works: Powers large CNC boring mills, planers, and heavy fabrication equipment simultaneously.
- Large Commercial Printing: Protects high-speed web offset presses and multi-color sheet-fed printing lines.
- Large Solar Power Plants: Conditions output from 160-200 KW grid-tied inverter arrays and hybrid systems.
- Large Hospital Campuses: Central power conditioning for entire facility including imaging, surgical, and life support.
- Large Cold Storage & Food Processing: Protects multiple compressor racks and processing lines from voltage instability.
- Commercial High-Rise Buildings: Stabilizes power for HVAC central plants, elevators, escalators, and BMS systems.
Key Features of 200 KVA Servo Stabilizer
- Industrial DSP Controller: High-speed digital signal processor with advanced algorithms for precise voltage regulation.
- Very High Inrush Capacity: Engineered to handle large motor starting currents from multiple heavy machines simultaneously.
- Large Oil-Filled Tank: Transformers and variac immersed in premium insulating oil for superior cooling and insulation.
- Zero Waveform Distortion: Continuous electromechanical correction maintains pure sinusoidal output.
- Comprehensive Protection Suite: Overload, short circuit, phase failure, phase reversal, over/under voltage, and thermal.
- Extended Input Range: Standard 300V-480V operation with optional 280V-480V and 240V-480V ranges.
- ±1% Output Regulation: Maintains 415V output within tight tolerance band across all three phases.
- Individual Phase Correction: Independent voltage regulation on each phase for severe unbalanced load handling.
- 100% Continuous Duty: Rated for non-stop 24/7 operation at full load in ambient up to 45°C.
- Advanced Metering: Real-time display of all phase voltages, currents, frequency, and fault diagnostics.
- Heavy-Duty Construction: Robust CRCA steel enclosure with IP54 protection and industrial-grade paint.
- Alarm & Monitoring Contacts: Potential-free contacts for remote monitoring and BMS/SCADA integration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Rated Capacity | 200 KVA (200,000 VA) |
| Active Load Capacity | 160 KW (at 0.8 Power Factor) |
| Phase Configuration | Three Phase, Four Wire (Star) |
| Cooling Type | Oil Cooled (ONAN - Oil Natural Air Natural) |
| Input Voltage Range | 300V - 480V (Standard) / 280V-480V, 240V-480V optional |
| Output Voltage | 415V AC ± 1% (Line-to-Line) |
| Frequency | 50 Hz ± 5% |
| Efficiency | > 98.5% at Full Load |
| Correction Speed | 50 V per second |
| Response Time | 20-30 milliseconds |
| Cooling Medium | Mineral Insulating Oil (IS 335 / IEC 60296) |
| Protection Class | IP54 (Dust and Water Resistant) |
| Ambient Temperature | -5°C to 45°C |
| Insulation Class | Class H (180°C) |
| Dimensions (W x D x H) | 1200 x 900 x 1700 mm (Approx) |
| Weight | ~1250 kg |
| Standards Compliance | IS 9815, IEC 60076, CE Certified |
Working Principle of Servo Voltage Stabilizer
The 200 KVA servo voltage stabilizer operates on a precision closed-loop electromechanical feedback system scaled for heavy industrial loads. An electronic sensing circuit continuously monitors the incoming three-phase voltage at the input terminals. When the voltage deviates from the 415V set point, the microcontroller calculates the required correction and activates a high-torque synchronous servo motor.
This servo motor is mechanically coupled through a gear assembly to the carbon brush arm of a continuously variable transformer (dimmer/variac). As the motor rotates, the brush position changes along the variac winding, proportionally adding voltage (boost mode) during low input conditions or subtracting voltage (buck mode) during high input conditions. This adjusted voltage feeds the primary of the main buck-boost transformer, which delivers the corrected 415V output to the load. In the 200 KVA oil-cooled design, both the variac and main transformer are submerged in a large volume of insulating oil. This oil serves as both an efficient heat transfer medium and a high-dielectric insulator, allowing the unit to handle substantial power levels continuously without thermal stress.
Why Choose Voltapex Power
Integrated Manufacturing
Voltapex manufactures all critical components in-house—transformer cores, windings, and tanks—ensuring complete quality traceability and consistent performance.
Rigorous Factory Testing
Every 200 KVA unit undergoes full load heat run testing, BDV (breakdown voltage) oil testing, and comprehensive protection function verification before dispatch.
Safe Transport & Commissioning
We manage specialized logistics for heavy oil-filled equipment and provide experienced engineers for on-site installation and commissioning support across India.
Benefits of Using a 200 KVA Stabilizer
Complete Plant-Wide Protection
Single unit protects entire industrial facilities from voltage fluctuations, centralizing power conditioning and simplifying maintenance.
Significant Energy Savings
Optimized voltage reduces motor losses across all connected equipment, typically yielding 3-5% reduction in overall plant kWh consumption.
Reduced Maintenance Costs
Eliminates voltage-related motor failures, contactor coil burnouts, and electronic board damage that cause unplanned downtime.
Improved Production Consistency
Stable voltage ensures uniform motor speeds, consistent heating profiles, and repeatable process quality across all production shifts.
Extended Capital Equipment Life
Prevents cumulative insulation damage in large motors and transformers, extending the operational life of expensive production machinery.
Future-Proof Capacity
The 200 KVA rating provides substantial headroom for production expansion, additional heavy machinery, and increased automation.
Best 200 KVA Stabilizer for Steel Plants and Large Factories
Large industrial facilities such as steel plants, automotive assembly lines, and heavy engineering works present extreme power quality challenges that demand a robust solution. Multiple heavy machines starting simultaneously, electric arc furnaces, and varying production schedules create a highly dynamic electrical environment. The Voltapex 200 KVA servo stabilizer is engineered specifically for plant-wide deployment, serving as the primary power conditioning stage for entire industrial facilities.
Unlike smaller machine-specific stabilizers, the 200 KVA unit provides centralized voltage regulation for all connected loads. This approach offers several advantages: simplified electrical infrastructure, single-point maintenance, and consistent voltage across all equipment. The oil-cooled design with its large thermal mass handles the aggregate load of multiple production lines and heavy machinery without thermal derating, even during peak summer conditions. For industries such as steel processing, automotive manufacturing, and heavy fabrication where consistent quality depends on stable motor operation and precise process control, this unit delivers measurable improvements in productivity and reduced rejection rates. As a trusted industrial servo stabilizer for large-scale operations, the Voltapex 200 KVA provides the power foundation for reliable heavy manufacturing.
Frequently Asked Questions
Power Your Entire Industrial Facility with Confidence
Contact Voltapex Power for a comprehensive site evaluation and customized quote for the 200 KVA Oil Cooled Stabilizer.