SBW Series | 100kVA-1000kVA Three Phase Automatic Voltage Stabilizer | Customized Input & Output
The SBW Three Phase High Power Voltage Stabilizer is designed for factories, production lines and heavy-duty electrical equipment requiring stable three-phase power. With automatic voltage compensation, it helps maintain stable output when the input voltage fluctuates. Key Features: 100kVA-1000kVA+ capacity Three phase automatic voltage regulation Wide input voltage range Stable output with high efficiency Over/under-voltage and phase protection Customized voltage and capacity
Voltage instability is one of the leading causes of equipment failure, production downtime, and energy waste in industrial facilities. In many regions — particularly across South America, Africa, Southeast Asia, and the Middle East — grid voltage fluctuations, sags, surges, and phase imbalances are common and can severely damage sensitive machinery.
This three-phase high-power voltage stabilizer continuously monitors the incoming three-phase voltage and automatically corrects it in real time, ensuring your equipment always receives a clean, balanced, and stable power supply. Unlike standard stabilizers, this industrial-grade unit is built to handle heavy inrush currents, continuous 24/7 operation, and harsh industrial environments.
| Parameter | Value / Range |
| Model Range | SBW-100 kVA to SBW-2000 kVA |
| Number of Phases | Three-phase (3Φ + N + PE) |
| Input Voltage | 380V / 400V / 415V ±15% (standard); extended ±20% / ±25% available |
| Output Voltage | 380V / 400V / 415V (adjustable) |
| Output Accuracy | ±3% |
| Frequency | 50 Hz / 60 Hz |
| Capacity Options | 100 / 150 / 200 / 250 / 300 / 400 / 500 / 630 / 800 / 1000 / 1250 / 1600 / 2000 kVA (adjust) |
| Correction Method | Servo motor + carbon brush (standard) |
| Response Time | Servo: ≤ 1–3 s |
| Efficiency | ≥ 95% |
| Waveform Distortion | No additional distortion (servo) |
| Overload Capability | 120% for 10 min |
| Insulation Resistance | ≥ 5 MΩ |
| Dielectric Strength | 3000 VAC / 1 min (phase to ground) |
| Protection | OVP / UVP / OCP / SCP / OTP / Phase-loss / Phase-sequence |
| Display | Digital LED/LCD: input V, output V, current |
| Communication (Optional) | RS485, Modbus RTU, SNMP, dry contacts |
| Bypass | Manual bypass (optional ); automatic bypass (optional) |
| Cooling | Natural air convection / forced ventilation (auto-controlled fans) |
| Noise Level | ≤ 65 dB (servo) / ≤ 55 dB (static) at 1 m |
| Operating Temperature | –10 °C to +45 °C (standard); extended ranges available |
| Humidity | ≤ 95% RH (non-condensing) |
| Altitude | ≤ 1000 m (derating above; consult factory) |
| Protection Rating | IP20 (standard); IP23 / IP40 / IP54 (optional) |
Manufacturing & Processing – CNC machines, laser cutters, injection molding, packaging lines, textile machinery
Heavy Industry – Steel mills, cement plants, chemical processing, automotive assembly
Mining & Quarrying – Crushers, conveyors, drilling equipment
Medical & Healthcare – MRI, CT scanners, X-ray equipment, hospital power systems
Data Centers & IT – Servers, network equipment, UPS input conditioning
Commercial Buildings – Shopping malls, airports, hotels, high-rise office buildings
Infrastructure – Water treatment plants, pumping stations, railway signaling
Renewable Energy – Solar farm output conditioning, wind farm auxiliary power
Construction Sites – Tower cranes, concrete batching plants, temporary power

Packing: Export-grade wooden crate or steel skid, moisture-proof wrapping,
Transport: Suitable for 20 ft / 40 ft container depending on unit size and quantity.
Delivery Time: Typically 20 – 45 days after order confirmation (adjust to your actual lead time).
Incoterms: EXW / FOB / CIF / DDP – flexible terms available.
Documentation: Commercial invoice, packing list, Bill of Lading, Certificate of Origin, factory test report, CE certificate.
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