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    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V
    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V
    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V
    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V
    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V
    Picture of 250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V

    250 kVA Automatic Voltage Stabilizer, Three Phase, 220V/380V/440V

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    SKU: PH-AVS-3P250K
    $18,486.15
    ● 250 kVA power rating for protecting entire production lines, data halls, or large facility mains. ● Advanced computer programming enables adaptive regulation, diagnostics, and system optimization. ● Delivers seamless voltage correction with high output accuracy of ±1%. ● Handles 304V~456V AC input range, providing a stable 380V output (customizable). ● Includes over/under-voltage, delay, error, overload, overheat, and short-circuit protection.
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    ⏱️ Delivery: 6-12 days
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    Overview

    Our powerful air-cooled voltage stabilizer, designed as the cornerstone of power quality for large industrial facilities and critical infrastructure, combines massive 250 kVA capacity with intelligent precision. By automatically compensating for voltage fluctuations caused by unstable grids or load variations, it ensures a consistent and reliable output voltage for critical equipment. Built with intelligent computer-controlled regulation and stepless voltage adjustment technology, this stabilizer delivers precise voltage correction without waveform distortion. Its high efficiency and robust protection system make it a dependable choice for factories, infrastructure facilities, and large-scale commercial power systems requiring long-term stability and reduced energy loss.

    250 kVA 3 phase voltage stabilizer feature

    Feature

    • Intelligent Computer-Programmed Regulation: Sophisticated computer control allows for smart, adaptive voltage compensation, real-time system monitoring, and customizable response profiles for complex load scenarios.
    • Precision Step-less Voltage Control: Engineered to provide smooth, continuous voltage adjustment without steps, ensuring a pure and stable ±1% accurate output for even the most sensitive high-power equipment.
    • Advanced Multi-Function Protection: Features a comprehensive protection system including time-delay functions and error state detection alongside standard electrical safeguards for maximum system security.
    • High-Efficiency Energy Saving Design: Operates at ＞95% efficiency, significantly reducing energy losses and operational costs in large-scale, continuous-use applications.
     

    Details

    1. High-quality circuit breaker
    2. New silicon steel plate, high magnetic transformer with compensator
    3. High-speed reducer servo motor
    4. Cooling fan*2
    5. Carbon brush
    6. Precision voltage copper coils
    250 kVA 3 phase voltage stabilizer details

    3 Phase Voltage Stabilizer Schematic Diagram

    schematic diagram of 3 phase voltage stabilizer

    Specs
    Capacity 250 kVA (The power capacity of the voltage stabilizer needs to be 1.5~2 times greater than the load power)
    Phase 3-Phase 4-line
    Input Voltage Range ±15% tolerance for all standard output voltages above 380V.
    ±20% tolerance for the required 380V output and all standard voltages below.
    Output Voltage 3-phase 380V (Optional: 110V/ 120V/ 208V/ 220V/ 230V/ 240V/ 400V/ 415V/ 440V/ 460V/ 480V)
    Output Accuracy ±2~4% / ±1% (Optional)
    * In case of output accuracy of ±2~4%, the voltage stabilizer will be servomotor-based, and in case of output accuracy of ±1%, the voltage stabilizer would be SCR-based.
    Frequency 50Hz/60Hz
    Current Type AC
    Efficiency ≥95%
    Response Time ≤1.5S
    Ambient Temperature -15°C~+40°C
    Cooling Method Air-cooled
    Insulation Resistance ≥5MΩ
    Electrical Intensity Without breakdown and flashover phenomena at power frequency sine voltage 2000V for 1 min
    Overload Capacity Overload current (%) Duration (min)
    20 ≤60
    40 ≤15
    60 ≤5
    Waveform Distortion Non-lack fidelity waveform
    Protection Over-voltage, over-current, feed phases
    Protection Grade IP 24
    Warranty 12 months
    Certificate ISO9001:2008, CE
    Weight 1150 Kg
    Package Size 1100×800×2000 (mm)

    PDF computing30kVA-3000kVA 3-Phase Voltage Stabilizer User Manual

    Application
    3 phase automatic voltage stabilizer for medical equipment

    Medical Equipment

    3 phase automatic voltage stabilizer for communication circuits

    Communication Circuits

    3 phase automatic voltage stabilizer for CNC machine tools

    CNC Machine Tools

    3 phase automatic voltage stabilizer for power distribution equipment

    Power Distribution Equipment

    FAQ

    Q1: What types of "delay" and "error" protection functions are provided?

    • Delay Protection: This typically refers to a built-in time-delay function on startup (after a power outage) and sometimes on output. It prevents the stabilizer from instantly re-energizing connected equipment, allowing motors and systems to settle and preventing inrush current cascades. It can also provide a delay before reconnecting after a fault is cleared.
    • Error Protection: This indicates the system's self-diagnostic capability. The computer continuously monitors internal parameters (currents, voltages, temperatures). If an internal fault or inconsistency is detected (e.g., a sensor failure, control logic error), it will trigger a protective shutdown and display an error code, preventing unsafe operation and aiding in troubleshooting.

    Q2: For a facility with a planned expansion, is it better to oversize with a 250 kVA voltage stabilizer now or add another unit later?

    This is a strategic decision. Oversizing with a single 250 kVA unit now offers advantages: a single point of control and maintenance, potentially higher efficiency at partial load, and avoiding the complexity and cost of synchronizing multiple units later. However, it requires a higher upfront capital investment. Adding units later provides flexibility and spreads capital cost over time, but involves more complex electrical design for paralleling and load sharing. A detailed load growth projection and consultation with power engineers is strongly recommended to determine the most cost-effective and reliable strategy.

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