SGAVR-200KVA is a 3-phase automatic voltage stabilizer and transformer integrated machine designed to convert 400V input to stable 380V output. With ±15% input voltage compensation, ±1%–2% regulation accuracy, ≥98% efficiency and intelligent microcomputer control, it provides stable and reliable power for CNC machines, medical equipment, data centers and other sensitive industrial loads.
The SGAVR-200KVA combines an automatic voltage stabilizer and step-down transformer in one integrated unit, providing both voltage regulation and voltage conversion for industrial and commercial applications. It accepts 3-phase 4-wire 400V input and delivers a stable 3-phase 4-wire 380V output, making it suitable for equipment that requires stable and correctly matched operating voltage.
The SGAVR-200KVA uses a dual CD-type silicon-steel core ferromagnetic resonance stabilization system. It automatically compensates for input voltage fluctuations within ±15%, maintaining output voltage regulation accuracy of ±1%–2%. The continuous regulation principle provides a pure sine wave output without switching transients.
Instead of installing a separate voltage stabilizer and transformer, the SGAVR combines both functions in one machine. The transformer section uses electromagnetic induction to step down the stabilized 400V input to 380V output, helping reduce installation space, wiring requirements and system complexity.
A microcomputer-based control system continuously monitors input voltage, output voltage and load conditions. The system automatically adjusts the compensation circuit or winding configuration when the input voltage changes. It also provides overvoltage, undervoltage, overload, short-circuit and phase-loss protection, with visual status indicators. Manual voltage regulation is available for commissioning and maintenance.
With an efficiency of ≥98% at full load and an input power factor of ≥0.95, the SGAVR-200KVA is designed to reduce energy losses during operation. Its output features pure sine wave performance with THD below 1%, helping provide clean power for sensitive electrical and electronic equipment.
| Parameter | Specification |
|---|---|
| Rated Capacity | 200 KVA |
| Phase | 3 Phase |
| Input Voltage | AC 400V, 3-phase 4-wire |
| Output Voltage | AC 380V, 3-phase 4-wire |
| Input Voltage Range | ±15% |
| Voltage Regulation Accuracy | ±1%–±2% |
| Frequency | 50Hz / 60Hz |
| Efficiency | ≥98% |
| Input Power Factor | ≥0.95 |
| Response Time | <1 second |
| Overload Capacity | 150% for 10 seconds; 3× rated load current momentarily |
| Insulation Class | Class F |
| Protection Degree | IP20, Indoor Use |
| Operating Temperature | –20°C to +45°C |
| Design Life | 20 Years |
The 200KVA AVR stabilizer and transformer integrated machine is designed for applications where both voltage stabilization and voltage conversion are required, including:
The unit features comprehensive protection against overvoltage, undervoltage, overload, short circuit and phase loss. The modular microcomputer control design facilitates troubleshooting and maintenance. The product uses F-class insulation and is designed for continuous-duty operation with a 20-year design life.
Each unit undergoes initial functional and electrical safety testing before shipment, followed by a 48-hour continuous aging test. Export-grade wooden case packaging is used for long-distance transportation. The product is covered by a 1-year warranty with lifetime maintenance support, subject to the manufacturer's warranty terms.
