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Fushin 3-phase voltage stabilizers (AVR) are specialized devices designed to automatically regulate and stabilize 3-phase power systems. They maintain a consistent output voltage according to the design specifications of machinery and production lines in factories, workshops, and other systems requiring stable power.

In industrial environments, power grids can fluctuate due to heavy loads, long distances from substations, or grid overloads. Under these conditions, a 3-phase voltage stabilizer helps maintain stable output voltage, reducing voltage-related errors, performance issues, and potential equipment damage.

1. Fushin 3-Phase Stabilizer Input Voltage Ranges

Selecting the correct input voltage range is one of the most important factors when choosing a voltage stabilizer. The selection should be based on the actual lowest and highest voltages measured at the installation site.

Fushin categorizes its 3-phase voltage stabilizers into three main input voltage ranges:

🔹 260V–430V Range (Wide Voltage Range)

Suitable for areas with unstable power supplies and frequent or significant voltage drops.

• Input Voltage: 260V–430V (3-Phase)
• Applications: Suitable for factories and workshops located far from substations or areas experiencing significant voltage fluctuations and requiring a wider voltage regulation range.

🔹 320V–430V Range (Standard Range)

Suitable for areas with relatively stable power grids that experience minor fluctuations or moderate voltage drops during peak hours.

• Input Voltage: 320V–430V (3-Phase)
• Applications: A standard range suitable for many industrial zones, factories, workshops, and industrial power systems.

🔹 350V–500V Range (High Voltage Range)

Suitable for areas where the grid voltage is frequently high or experiences significant voltage fluctuations.

• Input Voltage: 350V–500V (3-Phase)
• Applications: Automatically regulates high input voltage to maintain a stable output according to the specifications of the selected model, helping reduce the impact of overvoltage on electrical equipment.

Quick Selection Guide:

• Weak power, deep voltage drops (down to ~280V–300V): Consider the 260V–430V range.
• Relatively stable power (typically around 330V–400V): Consider the 320V–430V range.
• Frequently high voltage (above 400V): Consider the 350V–500V range.

2. Output Voltage and Capacity Specifications

Output Voltage

Fushin 3-phase voltage stabilizers are available with different output voltage configurations depending on the model and electrical system requirements:

• 380V (3-Phase): Suitable for standard industrial equipment and 3-phase electrical systems requiring a 380V supply.
• 220V/380V (3-Phase): Suitable for systems requiring both 220V phase-to-neutral and 380V phase-to-phase power, depending on the equipment and electrical system configuration.

Capacity

Fushin provides 3-phase voltage stabilizer solutions from 10kVA to 3000kVA, depending on the model and project requirements.

When selecting the appropriate capacity, consider:

1. The total power consumption of all connected equipment.
2. The starting current of motors such as compressors, pumps, and CNC machines.
3. The continuous operating load and duty cycle of the system.
4. The characteristics of inductive and other high-starting-current loads.

For large industrial systems, capacity should be selected based on actual load characteristics rather than rated equipment capacity alone.

3. Industrial Applications

Fushin 3-phase voltage stabilizers are suitable for a wide range of industrial applications, including:

• Factories and Workshops: Stabilizing power supplies for production lines and industrial equipment.
• CNC and Machining Equipment: Providing stable voltage for machinery operating according to specified electrical requirements.
• Air Compressors and Chillers: Supporting stable operation of motor-driven equipment and reducing voltage-related operating issues.
• Elevators and Cranes: Providing stable power for control systems and motor-driven equipment.
• Industrial Production Lines: Maintaining a stable power supply for equipment operating continuously or under varying loads.

4. Technical Support & Project Policies

Fushin provides voltage stabilizer and transformer solutions for factories, industrial facilities, construction projects, and other industrial applications.

We provide:

• 3-year official warranty.
• Technical consultation and calculation to select the appropriate capacity and input voltage range based on actual load characteristics.
• On-site power grid surveys and voltage measurements when necessary.
• Technical documentation, VAT invoices, CO/CQ (Certificate of Origin/Certificate of Quality), and Test Reports according to project requirements.

For technical consultation or project quotations, please contact Fushin at 1900.633.587 for support.

5. Frequently Asked Questions (FAQs)

What equipment uses a 380V 3-phase stabilizer?

A 380V 3-phase voltage stabilizer is used for 3-phase equipment and electrical systems requiring a 380V supply. Common applications include factories, workshops, pumping systems, elevators, CNC machines, compressors, and other industrial equipment.

If the input voltage frequently drops to 300V, which range should I choose?

If the 3-phase voltage at your site frequently drops to around 300V, especially during peak hours, the 260V–430V wide-range model is recommended to provide sufficient voltage regulation capability and maintain a stable output according to the selected model's specifications.

How do I choose the correct capacity for a 3-phase voltage stabilizer?

Capacity selection should be based on the total load, actual operating power, motor starting current, and load characteristics. For systems with large motors, compressors, pumps, or CNC machines, starting current should be taken into consideration.

For large industrial systems, Fushin's technical team can provide consultation based on actual site conditions and load characteristics to help select an appropriate capacity and input voltage range.