Manufacturing Plants: CNC machines, injection molding, conveyor systems

Commercial Buildings: Elevators, HVAC systems, lighting networks

Healthcare Facilities: Hospitals, clinics (backup power stabilization)

Data Centers: Server rooms, UPS input conditioning

Mining & Construction: Heavy-duty motors, crushers, drills in remote sites

Agriculture: Irrigation pumps, grain dryers

Renewable Energy: Solar/wind farm step-up stabilization 

• ✅ Ultra-Wide Input Range: Handles voltage fluctuations from ±20% up to ±30% (customizable), automatically correcting unstable grid power to protect downstream equipment.
• ✅ High Output Accuracy: Maintains output voltage at 380V/400V/415V ±5%, ensuring sensitive machinery operates within safe parameters.
• ✅ Oil-Immersed Cooling (ONAN): 100% copper windings immersed in high-quality insulating oil for superior heat dissipation, allowing continuous 100% load operation in high-temperature environments.
• ✅ Zero Fire Hazard: Flame-retardant transformer oil eliminates fire risk, making it safe for indoor and outdoor installations (IP54 enclosure optional).
• ✅ Heavy-Duty Performance: Robust short-circuit withstand capacity, strong mechanical strength, and maintenance-free operation for over 50,000 hours.
• ✅ Comprehensive Protection: Built-in safeguards against over-voltage, under-voltage, phase loss, overload, short-circuit, and over-temperature (with automatic shutdown).
• ✅ Automatic / Manual Control: Seamless switching between auto regulation and manual bypass for flexible maintenance.
• ✅ Global Compatibility: Supports 50Hz / 60Hz, with customizable input/output voltages to match local grid standards worldwide.

1. Sensing: High-precision voltage sensors continuously monitor the incoming grid voltage on all three phases.
2. Comparing: The microprocessor-based controller compares the input with the preset output target (e.g., 400V).
3. Commanding: If deviation exceeds the threshold, the controller sends a signal to the motor-driven tap changer.
4. Regulating: The oil-immersed regulating transformer adjusts the turns ratio smoothly, compensating for voltage drop or surge.
5. Stabilizing: Output voltage is restored to ±1% accuracy within seconds, ensuring connected loads receive clean, stable power.

Factory Direct Supply:​ Competitive pricing with full quality control from raw material to finished product.
Tailored Engineering:​ Custom voltage ranges, enclosure ratings, and control interfaces to match your exact project needs.
Accelerated Production:​ Standard models ship in 7–15 days; expedited manufacturing available for urgent orders.
Global Certifications:​ Products tested and certified to meet international standards (IEC, ISO, CE).
Lifetime Technical Support:​ Remote commissioning guidance, spare parts supply, and 24/7 online assistance.

Q1: What is the difference between oil-immersed and dry-type stabilizers?

A: Oil-immersed stabilizers offer better heat dissipation, higher overload capacity, and longer lifespan, making them ideal for outdoor or heavy-duty industrial use. Dry-type units are better for indoor clean environments but have limited capacity.

Q2: Does the stabilizer interrupt power during voltage correction?

A: No. The SBW-O series uses contactless or motor-driven tap changing with bypass transition, ensuring uninterrupted power supply during regulation.

Q3: Can the output voltage be adjusted manually?

A: Yes. The digital control panel allows manual fine-tuning of the output voltage within a ±5% range.

Q4: What maintenance is required for an oil-immersed stabilizer?

A: Minimal maintenance is needed. We recommend oil dielectric testing every 2–3 years and checking oil level/temperature indicators periodically.

Q5: Can this stabilizer be installed outdoors?

A: Yes, with the optional IP54 weatherproof enclosure and stainless steel hardware, it is suitable for outdoor installation.