AF50-330500 500kVA Three Phase Voltage Stabilizer AC Power Supply
- Product Description
AF50-330500 500kVA Three Phase Voltage Stabilizer & AC Power Supply
Industrial Power Conditioning Solution for Unstable Grid and Heavy-Duty Equipment Protection
The ACSOON AF50-330500 500kVA Three Phase Voltage Stabilizer and AC Power Supply is designed to provide stable, clean and reliable AC power for industrial equipment operating under unstable grid conditions.
Using advanced IGBT rectifier and inverter technology with SPWM control, the system converts fluctuating input power into stable output power, protecting sensitive electronics, automation systems, production equipment and heavy-duty electrical loads from voltage fluctuation, frequency variation and power quality problems.
With a capacity of 500kVA, the AF50-330500 is suitable for factories, manufacturing plants, data centers, laboratories, industrial automation systems and other applications requiring high reliability and continuous power operation.
The system supports three-phase input and output, with adjustable voltage and frequency according to different regional power standards, making it widely used in Middle East, Southeast Asia, Africa and other regions where grid stability is a major challenge.

What Problems Can AF50-330500 Solve?
1. Unstable Grid Voltage Protection
Many industrial facilities in developing regions experience:
- Voltage fluctuation
- Sudden voltage drop
- Over-voltage conditions
- Generator unstable output
- Poor grid quality
- These problems may cause:
- PLC malfunction
- Motor damage
- Production interruption
- Electronic component failure
- Increased maintenance costs
AF50-330500 stabilizes unstable electricity input and provides a consistent power supply for critical equipment.
2. Protect Expensive Industrial Equipment
Modern industrial equipment requires stable power quality.
AF50-330500 helps protect:
- CNC machines
- Industrial robots
- Automation production lines
- Medical equipment
- Laboratory instruments
- Communication equipment
- Precision manufacturing systems
By providing pure sine wave output with low harmonic distortion, the system improves equipment reliability and extends service life.
3. Improve Factory Production Reliability
For manufacturing companies, unexpected power problems can create:
- Production downtime
- Material waste
- Equipment restart problems
- Delivery delays
The AF50-330500 provides continuous and stable power conditioning, helping factories maintain stable production performance even under poor grid conditions.

Solution: Industrial Voltage Stabilization and Power Conditioning System
The AF50-330500 works as a complete power conditioning solution:
Unstable Grid / Generator Power
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AF50-330500 Voltage Stabilizer & AC Power Supply
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Stable Voltage + Stable Frequency + Clean Sine Wave Output
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Protected Industrial Equipment and Reliable Production
Main Applications
Manufacturing Factory Power Protection
Suitable for:
- Automotive factories
- Electronics manufacturing
- Machinery production
- Textile factories
- Packaging production lines
Provides stable power for automated production equipment.
Middle East Industrial Applications
Common applications include:
- Factory facilities
- Oil & gas supporting industries
- Construction equipment
- Remote industrial sites
- Generator-based power systems
Designed to handle unstable power environments commonly found in some Middle East regions.
Southeast Asia Industrial Applications
Suitable for:
- Manufacturing plants
- Industrial parks
- Electronics factories
- Commercial facilities
Helps solve voltage fluctuation problems caused by overloaded local grids.
Laboratory and Research Equipment
Provides clean AC power for:
- Testing equipment
- Measurement instruments
- Research systems
Ensures accurate operation and reliable measurement results.
Core Advantages
High Reliability IGBT Technology
AF50-330500 integrates advanced IGBT power modules from internationally recognized suppliers, combined with SPWM control technology.
Benefits:
- Faster response speed
- Higher conversion efficiency
- Better power stability
- Long operational lifetime
Pure Sine Wave Output
The system provides clean sinusoidal AC output:
- Low harmonic distortion
- Stable waveform
- Suitable for sensitive electronic equipment
- Output THD:<3% @ Linear Load
Wide Input Voltage Range
Designed for unstable electrical environments.
Supports:
Three phase 380V ±30%
Three phase 208V ±30%
Other voltage requirements can be customized according to customer application.
Galvanically Isolated Output
The isolated output transformer provides:
- Better electrical protection
- Improved load compatibility
- Support for unbalanced loads
- Each phase can operate independently.
Real-Time Monitoring System
Front digital display provides:
- Input voltage
- Output voltage
- Current
- Frequency
- Power factor
- Output power
Allowing operators to monitor system status easily.
Heavy Duty Industrial Design
Designed for long-term industrial operation:
- MTBF ≥50,000 hours
- Overload capacity: 125% for 1 second
- Operating temperature: -10℃ to 50℃
- Protection functions included
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | AF50-330500 |
| Product Type | Three Phase Voltage Stabilizer / AC Power Supply |
| Capacity | 500kVA |
| Input Phase | Three Phase |
| Input Voltage | 380V ±30% (265V-495V) |
| Optional Input Voltage | 208V ±30% |
| Input Frequency | 30Hz-80Hz |
| Output Voltage | 3×380V / 220V or customized |
| Output Frequency | 50Hz / 60Hz |
| Voltage Regulation | ±1% |
| Frequency Regulation | ±0.1% |
| Waveform | Pure Sine Wave |
| Harmonic Distortion | THD <3% @ Linear Load |
| Crest Factor | 1.414 ±0.1 |
| Power Factor | ≥0.8 Standard |
| Overload Capacity | 125% 1s |
| Protection | Over Voltage / Under Voltage / Over Current / Over Load / Over Temperature / Short Circuit |
| Display | Voltage / Current / Frequency / Power / PF |
| Efficiency | ≥85% |
| MTBF | ≥50,000 Hours |
| MTTR | <30 Minutes |
| Working Temperature | -10℃ to 50℃ |
| Humidity | 10%-95% |
| Noise Level | <65dB @ 1 meter |
| Protection Grade | IP20 / IP32 |
| Altitude | <1800m |
| Standards | EN60204-1 / IEC62321 / EN61000-6-3 |
Why Choose ACSOON AF50-330500?
For industrial customers operating in areas with unstable electricity supply, the AF50-330500 provides a reliable solution to improve power quality, protect critical equipment and reduce unexpected production interruptions.
It is not only a voltage stabilizer, but a complete industrial power protection system designed for factories, engineering projects and professional electrical applications.










