Meiji Indonesia Food Plant · 1000KVA
Three Phase Voltage Stabilizer with Independent Phase Regulation
Independent phase regulation voltage stabilizer designed for industrial facilities with unbalanced three-phase power supply, weak grids and uneven load conditions.
Rated Power: 20-3000KVA
Input Voltage:200/220/380/400/440/480V ±20%
Input Frequency:50/60Hz ±10%
Output Voltage:200/220/380/400/440/480V ±2%
Phase Regulation:Independent Phase Adjustment
Application:Industrial Facilities & Unbalanced Power Systems
Product Introduction
The SBW-F series is a three-phase voltage stabilizer with independent phase regulation, designed for industrial power systems where phase voltage imbalance occurs due to uneven loads, weak grids, or long-distance power distribution.
Independent Phase Regulation vs Conventional Three-Phase Regulation
The key difference between SBW-F and conventional three-phase voltage stabilizers is the regulation method. SBW-F adjusts each phase independently, while conventional systems regulate three phases together. Independent phase regulation is designed for three-phase voltage imbalance and unbalanced power systems.
SBW-F Independent Phase Regulation Structure
Independent Phase Regulation Structure (SBW-F)
How Independent Phase Regulation Works
- Each phase is monitored and regulated independently.
- The regulation system can compensate voltage deviation between phases.
- Designed for three-phase voltage imbalance caused by uneven loads or unstable power distribution.
Independent Phase Compensation Transformer Structure
Independent Phase Compensation Transformer Structure (SBW-F)
The SBW-F series uses independent phase compensation transformer structures to achieve phase-by-phase voltage regulation. This design is suitable for large-capacity industrial applications and three-phase power systems with voltage imbalance.
Conventional Three-Phase Regulation (SBW)
Conventional Three-Phase Common Regulation and Compensation Structure
Conventional Three-Phase Regulation Structure
- Three phases are regulated as a complete three-phase system.
- Suitable for normal industrial voltage fluctuation where phase balance is acceptable.
- Commonly used for factories, production equipment and standard industrial power systems.
The selection depends on the power system condition rather than product preference. Independent phase regulation is recommended for unbalanced three-phase power systems, while conventional three-phase regulation is suitable for general industrial voltage stabilization.
Selection Guide
| Item | SBW-F Independent Phase Regulation | Conventional SBW Three-Phase Regulation |
| Regulation Method | Each phase regulated independently | Three phases regulated together |
| Suitable Power Conditions | Unbalanced three-phase power systems | General industrial voltage fluctuation |
| Typical Applications | Mining, large factories, weak grids, uneven loads | CNC machines, production lines, balanced industrial loads |
| Key Advantage | Independent phase voltage correction under unbalanced conditions | Reliable voltage stabilization for balanced three-phase industrial applications |
For general industrial applications where three-phase voltage balance is acceptable, Winzele also provides the SBW Three-Phase Servo Voltage Stabilizer for reliable voltage stabilization of factories, production lines and industrial equipment.
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Working Principle
The SBW-F series stabilizes each phase of a three-phase power system independently. A voltage measuring unit monitors every phase and detects any deviation from the rated voltage, then the servo motor adjusts the regulating transformer so that the compensation transformer generates the required compensation voltage. This phase-by-phase regulation directly solves three-phase voltage imbalance caused by unbalanced grid voltage, unstable supply or uneven load changes.
Independent Phase Voltage Regulation Principle
SBW-F independent phase voltage regulation compensation principle
The control and regulating voltage transformer TVV is connected in Y shape to the output end of the stabilizer, and its primary winding connects with the primary winding of the compensation transformer TBa. The secondary winding of TBa is connected in series with the main circuit. Taking phase A as an example, the output voltage is maintained by adding the compensation voltage generated by the compensation transformer to the input voltage: Uao = Uai + UBa. When the input voltage changes, the regulating transformer adjusts the compensation voltage accordingly, keeping the output voltage within the required accuracy range.
The voltage measuring unit continuously monitors output voltage variation and sends control signals to the servo motor. Through the speed reducer and brush assembly, the regulating transformer changes the compensation voltage to maintain stable output voltage automatically. Phase B and phase C are regulated in the same way.
Digital Control and Protection System
SBW-F digital control system MCU control logic
The digital control system is built around an MCU that monitors the output voltage of each phase in real time. The voltage detection unit provides continuous feedback to the control circuit, which coordinates the automatic adjustment process. Protection functions include overvoltage protection, phase loss protection and phase sequence protection, ensuring safe and reliable operation of the stabilizer and the connected equipment.
Key Features
The SBW-F series is designed for industrial power systems requiring independent phase voltage regulation and stable operation under unbalanced three-phase power conditions.
Features
- Independent phase regulation for three-phase voltage imbalance compensation
- Suitable for large-capacity industrial power systems and uneven load conditions
- Stable output voltage regulation under unstable grid conditions
- Digital control system with automatic voltage monitoring and adjustment
- Suitable for continuous industrial operation with various load types
Technical Specifications
Electrical Specifications
| Parameter | Technical Indicators | Remark |
| Rated Voltage(Vac) | Three Phase 200V/208V/220V/380V/400V/440V/480V(Any voltage can be customized) | Three phase three wire (L1, L2, L3) +N(Neutral wire)+Ground(PE). |
| Input Voltage Range(%) | (Rated Voltage)±20%.e.g.380V±20%(Customizable other voltage input ranges) | Generally, the input voltage range can be ±15%/20%/30%/40% of the rated voltage. |
| Input Frequency(Hz) | Default 50/60Hz | Other frequencies can be customized |
| Output Voltage(Vac) | Three-phase 380V/400V (±10% adjustable) | Other voltages can also be customized, e.g: Three-phase 200V/220/440V/480V or other. |
| Output Voltage Stability Accuracy | ±1-5% (2-5% for normal products) | |
| Output Frequency | Same as input frequency | |
| Efficiency | 98% | |
| Output THD Increase | ＜0.1%(static and dynamic) | No additional waveform distortion (static and dynamic) is generated. The voltage THD increment is less than 0.1% |
| Output isolation transformer | △/Y or Y/Y | Optional |
Regulation and Performance
| Parameter | Technical Indicators | Remark |
| Voltage Regulation Mode | Each phase is independently adjustable. | |
| Dynamic Response Time | 40ms(Relative AC input voltage) | |
| Three-phase imbalance | Output three-phase voltage automatic control balance(YES) | Three-phase voltage automatic control balance(YES) |
| Applicable load type | Any load type (resistive, inductive, capacitive) | |
| Overload Capacity | 120% 10min 150% 1min | |
| Bypass Function | Manual bypass | Automatic bypass when an internal fault occurs optional |
Control System
| Parameter | Technical Indicators | Remark |
| Control Mode | Full digital control | The analog part is used for input and output signal conditioning |
| Main Control Unit | The main chip uses STM32F4XX for control and measurement | Some models use ARM master control with DSP function |
| Control Strategy | Digital Hysteresis Comparator & PID | |
| Motor Drive Mode | Thyristor driver(zero-crossing trigger) | |
| Stabilization Time | The input voltage ratings relative to the Range change of 10%, stable time less than 1 second | Load power 0-100% |
| Voltage and Current Measurement Methods | True RMS sampling (three-phase synchronization) | RMS & FFT sampling 256 points |
| Voltage & Current Control Strategy | PID double closed loop control |
Communication and Display
| Parameter | Technical Indicators | Remark |
| Communication Interface | RS485/232/MODBUS-RTU Protocol | Optional TCP/IP, GPRS and other interfaces |
| Display Media | Multi function LCD segment code | Industrial touch screen(7″or 10″) can also be customized |
| Display Electrical Parameters |
Input three-phase voltage and frequency;Output three-phase line voltage and frequency;Output line voltage average value;Output power factor;Output three-phase current;Output active power and apparent power; |
|
| Display Alarm Information | Output overvoltage (OV), overcurrent (OC); Output undervoltage (UV); Overload;Phase sequence fault; and other fault information | |
| Display Accuracy | The accuracy is Class 0.5s | |
| Voltage Display Resolution | 0.1V | |
| Current Display Resolution | 0.1A | |
Protection Specifications
| Parameter | Technical Indicators | Remark |
| Protection List | Output overvoltage (OV), overcurrent (OC); Output undervoltage (UV); transformer overheat; and Short Circuit;Phase sequence fault | |
| Protection Action | Cut off output and alarm;Automatic bypass;Automatically start after failure recovery | Fault dry contacts can be configured(NC&NO) |
Environmental Conditions
| Parameter | Technical Indicators | Remark |
| Working Temperature（℃） | -35℃ to +55℃ | Extreme temperature environments require special customization or derating |
| Relative Humidity（RH） | 10%-90%(20℃±5℃) | |
| Altitude | ＜2000m | For every 1000m increase in altitude, the rating should be derated by 10%. |
| IP Class | IP20 | Other IP Classes such as outdoor IP33 can be customized |
| Noise Level(dB) | ＜55dB |
Other special requirements can be communicated with winzele
List of SBW-F AVR Models & Products
1.Three-phase Model List(Their rated input voltage can be Three-phase 200V/220V/380V/440V/480V etc)
| Type | Rated capacity(kVA) |
Rated Current(A)at 380 V |
Dimension W×D×H(mm) |
| SBW-F-20KVA | 20 | 30 | 700*800*1000mm |
| SBW-F-30KVA | 30 | 45.6 | |
| SBW-F-50KVA | 50 | 76 | |
| SBW-F-80KVA | 80 | 121.6 | 800*880*1300mm |
| SBW-F-100KVA | 100 | 152 | |
| SBW-F-120KVA | 120 | 182 | 1000*920*1200mm |
| SBW-F-150KVA | 150 | 228 | |
| SBW-F-180KVA | 180 | 274 | 1100*1000*1500mm |
| SBW-F-200KVA | 200 | 304 | |
| SBW-F-250KVA | 250 | 380 | |
| SBW-F-300KVA | 300 | 456 | 1200*800*1900mm |
| SBW-F-350KVA | 350 | 532 | |
| SBW-F-400KVA | 400 | 608 | |
| SBW-F-500KVA | 500 | 760 | 1350*900*2000mm |
| SBW-F-600KVA | 600 | 912 | |
| SBW-F-800KVA | 800 | 1216 | 2000*1000*2000mm |
| SBW-F-1000KVA | 1000 | 1520 | |
| SBW-F-1200KVA | 1200 | 1824 | |
| SBW-F-1500KVA | 1500 | 2280 | 1350*1250*2200mm Three cabinets |
| SBW-F-2000KVA | 2000 | 3040 | 1500*1350*2200mm Three cabinets |
| SBW-F-2500KVA | 2500 | 3800 | |
| SBW-F-3000KVA | 3000 | 4560 | 1600*1350*2200mm Three cabinets |
Control Principle Topology Diagram
SBW-F control principle topology diagram
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Our Manufacturing Process
Four core processes ensure exceptional quality
Core Manufacturing
Core Manufacturing
High-grade silicon steel core for low loss and low-noise operation.
Coil Winding
Coil Winding
Automatic copper winding for precise layers and stable performance.
Final Assembly
Final Assembly
Complete voltage stabilizer assembly and electrical integration.
Testing & Final Inspection
Testing & Final Inspection
Electrical testing, functional checks, and final inspection before delivery.
Quality & Compliance
Certified quality management and product compliance for industrial power equipment.
Factory Tour & Manufacturing Capability
Manufacturing processes, production equipment and quality control facilities at Winzele.
International Customer Visits & Technical Exchange
International customers visit Winzele manufacturing facilities for equipment inspection, technical discussion and project communication.
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