What Is an SBW Three-Phase Servo Voltage Stabilizer?
An SBW servo voltage stabilizer uses a servo motor-driven regulating system combined with a compensation transformer to automatically correct voltage fluctuations. When the input voltage changes, the servo motor quickly adjusts the regulator to keep the output voltage stable within a preset accuracy range.
Compared with relay-type stabilizers, servo-controlled systems offer:
Higher precision
Smoother voltage adjustment
Better performance under heavy and continuous loads
Designed for Factory & Industrial Power Control
The SBW Three-Phase High Power Voltage Stabilizer is specifically engineered for industrial applications where power demand is high and voltage stability is critical.
Typical Applications
Manufacturing plants & production lines
CNC machines & processing equipment
Injection molding machines
Industrial motors & compressors
Elevators, hoists, and cranes
Printing, textile, and packaging factories
Stable voltage helps reduce downtime, extend equipment lifespan, and improve production efficiency.
Key Advantages of the SBW Three-Phase Voltage Stabilizer
🔹 High Power Capacity
Wide capacity range: 30KVA–4000KVA
Ideal for medium and large industrial loads
Strong overload tolerance for demanding applications
🔹 Precise Servo Control
Voltage regulation accuracy: ±3%
Smooth and continuous adjustment without voltage steps
Fast response to sudden voltage changes
🔹 High Efficiency & Low Loss
Overall efficiency >95%
No additional waveform distortion
Maintains clean sine wave output
🔹 Reliable Protection System
Built-in protections include:
Overvoltage protection
Overload protection
Short-circuit protection
Over-temperature protection
These features ensure both stabilizer safety and load equipment protection.
🔹 Clear Digital Display
Real-time display of input/output voltage
Load ratio monitoring
Fault indicators for easy troubleshooting
Technical Parameters
|
Model |
SBW-N-30KVA | SBW-N-50KVA | SBW-N-60KVA | SBW-N-80KVA | SBW-N-100KVA | |||||||
| SBW-N-120KVA | SBW-N-150KVA | SBW-N-200KVA | SBW-N-250KVA | SBW-N-300KVA | ||||||||
| SBW-N-350KVA | SBW-N-400KVA | SBW-N-500KVA | SBW-N-600KVA | SBW-N-800KVA | ||||||||
| Phase | Three phase | |||||||||||
| Input voltage | AC 304-456V or customized | |||||||||||
| Output voltage | AC 380V or customized | |||||||||||
| Frequency | 50Hz/60Hz | |||||||||||
| Precision | ±3% | |||||||||||
| Efficiency | >95% | |||||||||||
| Control type | Servo motor | |||||||||||
| Digital display | Show input and output voltage,Load Ratio and Fault Indicator | |||||||||||
| Protection | Overvoltage, Overload, Short circuit, Over temperature | |||||||||||
| Ambient temperature | -10°C~+ 40°C | |||||||||||
| Relative Humidity | <95% | |||||||||||
| Waveform Distortion | No additional wave form distortion | |||||||||||
| Insulating Resistance | Normally more than 2MΩ | |||||||||||
| Insulating Class | Class B | |||||||||||
|
Protection |
Overvoltage | Output Voltage ≥ 425V ± 4V | ||||||||||
| Low voltage | Output Voltage ≤ 360V ± 4V | |||||||||||
| Over temperature | 95℃±10℃ | |||||||||||
| Delay protection | Customizable | |||||||||||
| Undervoltage | Disabled by default, customizable if needed | |||||||||||
| Power | 50KVA | 60KVA | 80KVA | 100KVA | 120KVA | 150KVA | 200KVA | |||||
| Size(mm) L*W*H | 885*550*1200 | 885*550*1200 | 885*550*1200 | 920*620*1300 | 920*620*1300 | 970*700*1390 | 1020*700*1390 | |||||
| N.W(kg) | 190 | 190 | 195 | 271 | 280 | 343 | 416 | |||||
| Power | 250KVA | 300KVA | 400KVA | 500KVA | 600KVA | 800KVA | ||||||
| Size(mm) L*W*H | 1020*700*1600 | 1100*800*1800 | 1100*800*1800 | 1100*1250*2000 | 1100*1250*2000 | 1200*1300*2000 | ||||||
| N.W(kg) | 530 | 644 | 706 | 961 | 1225 | 1328 | ||||||
| The size and weight vary depending on the voltage range, and are subject to the customized actual product. | ||||||||||||
FAQ
1. Is a 150KVA three-phase voltage stabilizer suitable for continuous factory operation?
Yes. The SBW series is designed for long-term, continuous industrial use with high efficiency and robust protection.
2. Can the input and output voltage be customized?
Absolutely. Both input voltage range and output voltage can be customized to match local grid conditions.
3. What maintenance does a servo voltage stabilizer require?
Routine inspection and basic cleaning are usually sufficient. High-quality components ensure long service life with minimal maintenance.
