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    50 kVA 3 phase Industrial AC Automatic Voltage Stabilizer

    5 out of 5 based on 3 reviews | Write a review
    3 phase industrial full automatic compensated voltage stabilizer with 50 kVA capacity, 380V output, input voltage range is 304V-456V AC (+/- 20% tolerance). The high quality voltage stabilizer is manufactured using the best quality components and progressive technology and is extensively used in various industrial applications.
    SKU: ATO-AVS-3P50K
    30-day Returns
    Delivery date: 10-20 days

    50 kVA Voltage Stabilizer Features

    • Three phase 4-line 175V-265V (phase voltage) 304V-456V AC (line voltage) of wide input voltage range, 380V output
    • High technology with computer programming control
    • The high accuracy of the output voltage (output voltage can be customized)
    • Perfect protection function: Over/ low voltage protection, over heat/ load protection, short circuit protection
    • High efficiency: More than 95%

    50 kVA 3 phase Industrial AC Automatic Voltage Stabilizer is widely used in post and telecommunications, department stores, elevators, hospitals, schools, printing, securties and other occasions where all needs normal voltage to ensure, such as workshop mines medium enterprises, some of the important equipment and computer power and support.

    50 kVA Voltage Stabilizer Specifications

    Model Number ATO-SBW/ZBW-50K
    Capacity 50 kVA (The power capacity of voltage stabilizer needs to be 1.5~2 times greater than the load power)
    PDF User Manual for 30kVA-3000kVA 3-phase voltage stabilizer
    Phase 3 Phase 4-line
    Input Voltage Range ±15% tolerance for all standard output voltages above 380V.
    ±20% tolerance for 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 Naturally air cooled
    Insulation Resistance ≥5MΩ
    Electricalintensity 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 24 months
    Certificate ISO9001:2008, CE
    Weight 350 Kg
    Package Size 800x620x1350 mm

    3 Phase Voltage Stabilizer Schematic Diagram

    three phase voltage stabilizer schematic diagram

    Industrial Voltage Stabilizer Inner Detail

    3 phase voltage stabilizer details

    Tips: Why is the voltage of a 50kVA industrial voltage stabilizer unstable?

    1. The input voltage is too high or too low. The voltage range of 50kVA three-phase instrial voltage stabilizer is 304V-456V. If the input voltage exceeds the regulated range or is very low, the automatic protection system of the regulated power supply will start, thus causing the output voltage to be unstable or stop working directly.
    2. The input voltage is unbalanced in three phases, that is, the voltage of one of the three phases of the stabilizer is unstable, which will also lead to the output voltage of the stabilizer is unstable.
    Existing reviews of 50 kVA 3 phase Industrial AC Automatic Voltage Stabilizer
    Problems with machine heating
    We are running a CNC Router. This has a high-speed motor starting and stopping as well as vacuum pumps starting and stopping. Our power supply ranges from 495 to 468 volts. Which is within range for 5%   or - 480 volts. However, when we check power leg to leg, we consistently have 1 leg of power that is lower than the other 2 legs. Usually within 2 - 3% though. The machinery company would like to see all 3 legs of power closer equal. The stabilizer does that, but it also stabilizes and tries to keep it within 1 - 2% accuracy. I think that's asking too much of any stabilizer with the machine we have attached to it. It just can't quite keep up. Our power accuracy is fine for the most part. I just wish we could level out the power leg to leg. The stabilizer keeps up for a while but eventually, it can't keep up, and it overheats. and trips the breaker. What's this for?
    From: james | Date: 08/01/2024
    Was this review helpful? Yes No (0/0)
    ATO Responded
    If the stabilizer is overheated and triggers the circuit breaker to trip, it may be that the ventilation and heat dissipation of the on-site environment are Not good enough, or the stabilizer may be overloaded. Especially overload problems are most likely to trigger stabilizer trip failures.
    Confirm before buying
    I see the spec on this 50kVA 3 phase voltage stabilizer that states  /- 1%.  The question I have is for input voltage changes of, say  -(1-2)%, what is the expected output voltage variation?  I would assume at least 50% to 80% of loading capacity.

    Also, what impact would be on the output if the above 1-2% voltage fluctuation is fast… what is the expected output fluctuations for the first few cycles of the input fluctuation?
    From: Nahum Ayestas | Date: 28/12/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    1. If the accuracy of the Voltage Stabilizer is +/- 1%, then when the input voltage changes to +/- (1-2)%, the expected output voltage variation is still  withing ±1%.
    2. If the input voltage fluctuation is fast, the Voltage Stabilizer output voltage will not be affected, and the expected output voltage variation is still ±1%.
    This is a fantastic device
    This is a fantastic device. We live in an area where the power fluctuates. This is not good for electronics. This automatic voltage stabilizer works great in keeping our electronics safe.
    From: Kaled Serdio | Date: 19/12/2019
    Was this review helpful? Yes No (0/0)
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