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    10kVA 3-Phase 480v 60Hz/380v 50Hz Frequency Converter

    5 out of 5 based on 12 reviews | Write a review
    High quality three phase 10 kVA frequency converter (AC power supply), convert 480V/460V 60Hz to 380V/400V 50Hz by inner step-up & step-down transformer, adjustable output frequency & voltage suitable for industrial equipments.
    SKU: HZ-50-3310
    30-day Returns
    Delivery date: 6-12 days

    10 kVA AC power frequency converter, three phase input, 1-phase or 3-phase output, change 60Hz to 50Hz for household appliances, 400Hz for military facilities, also convert 220 Volt to 380V/400V in one step.This type of frequency converter usually uses three-phase input and output, which can provide more stable voltage and greater power. It can also provide functions such as starting, braking and reversing of the motor to meet the power needs of more equipment.


    Model HZ-50-3310
    Capacity 10 kVA
    Dimension 770 (D)*580 (W)*1140 (H) mm
    Weight 150 kg
    Input Voltage 3 Phase 4 Wire: Wye Type 190/110, 200/115, 208/120, 220/128, 230/132, 240/139V ±10% (option *)
    3 Phase 4 Wire: Wye Type 380/220, 400/230, 415/240, 440/254, 460/265, 480/277V ± 10% (option *)
    3 Phase 4 Wire: Della Type 220, 230, 240, 380, 400, 415, 440V ± 10% (option *)
    Frequency 50 Hz, 60 Hz or 400 Hz ± 5%
    Output Voltage, current 110V Setting (Low grade): 0-150V (phase voltage), 0-260V (line voltage) 27.6A
    220V Setting (High grade): 0-300V (phase voltage), 0-520V (line voltage) 13.8A
    Load stabilization Rate ≤±1%
    Frequency 50Hz, 60Hz up to 400Hz adjustable
    -When the output is 400Hz, the load capacity can only reach 50% of the rated capacity.
    -When the output is ≤120Hz, the load capacity can reach 100% of the rated value.
    -You can just adjust converter output frequency in the range (40-400Hz) for 400Hz option.
    Frequency Stability ≤±0.01%
    Harmonic Distortion Pure Sine Wave ≤2%
    Frequency meter 4 digit, digital frequency meter, resolution 0.1Hz/Step
    Voltmeter 4 digit, digital voltage meter, resolution 0.1V
    Ammeter 4 digit, digital ammeter, resolution 0.1A
    Watt meter 4 digit, digital Watt meter, resolution 0.1W
    Protection With overload, short circuit, over temperature
    Instantaneous power failure protection and alarm device
    Working Environment Temperature 0 - 40 deg.℃
    Humidity 0 - 90% (Non condensation)
    Warranty 18 months

    Tips: Can a motor with frequency of 60 Hz be connected to a 50 Hz power supply?

    When the power supply voltage is constant, the power supply frequency is low, which is unfavorable for the operation of the motor. First, the increase in the magnetic flux density of the motor causes the core flux to saturate. At this time, the excitation current of the magnetic flux increases, so the increase of the total current of the stator of the motor increases, and the iron loss of the motor increases. The motor efficiency is reduced, the heat generation is increased, and the temperature rise is increased. According to the formula of the rotation speed n1=60f/p, n1 decreases, and the rotor rotation speed also decreases, so that the air volume is reduced, the heat dissipation is poor, and the motor temperature rises.

    In order to use a 60 Hz motor for a 50 Hz power supply and not to generate heat, a method of lowering the power supply voltage can be used. Take a 380 volt motor as an example. In order to make the motor not overcurrent, it is necessary to maintain the magnetic flux density unchanged. Under the 50 Hertz power supply, the voltage at which the magnetic flux density is constant is (50/60) X380 = 317 volts. That is to say, as long as the power supply voltage drops to 317 volts, 60 Hz, the 380v motor will not generate heat on the 50Hz, 380v power supply. But pay attention to the following two issues. First, the motor speed will be reduced by about 17%. Second, since the voltage is 83% of the rated voltage, the power used after the step-down is only 83% of the original motor power.

    In this case, ATO recommends using frequency converter as a standard power supply. AC power supply can step-up & step-down frequency and voltage, output pure sine wave, convert fixed frequency to the required frequency and voltage.

    Existing reviews of 10kVA 3-Phase 480v 60Hz/380v 50Hz Frequency Converter
    3-Phase Frequency Converter
    We will be moving in a few weeks and want to make sure our current units will work in the new place. Our new building will have 240V 3-phase power. If the 3-phase frequency converter cannot run directly on 240V, what are some solutions we can explore?
    From: Gloria | Date: 07/05/2024
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The normal input voltage range of our converter is 208VAC ±10%. If the voltage exceeds 240V, it falls outside the unit's voltage range, and we do not recommend using 240V directly. We suggest adding an autotransformer of the same capacity at the front end of the converter. Then, reduce the voltage from 240V to 208V through the autotransformer, which is a better solution.
    If you agree to add an autotransformer solution, you can tell us your available single-phase voltage and three-phase voltage respectively.
    A calibration procedure for frequency converter
    Would you be able to provide us with a calibration procedure for this product?
    The time has come for calibration and our end-user wants to ensure the unit is calibrated before using it for qualification tests.
    From: wendy | Date: 19/07/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    If the actual output voltage of the converter is the same as the voltage displayed on the LCD panel without error, you do not need to calibrate the converter.
    I have some more questions about the converter
    I have some more questions about the converter.
    On page 12 there is a note stating that the input/output cable diameter should be doubled if over 20 meters. What is the reasoning behind this?
    Is it for voltage drop? Is that the total length from the source panel?
    Or does that get “reset” if there was a disconnect before the converter?
    Also, are there any torque specifications on the input/output terminals?
    From: kamran | Date: 15/06/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    1. Yes, there is indeed a voltage drop over a distance of 20 meters, but the voltage drop is relatively small, about 0.3V. If you do not have high requirements on the accuracy of the output voltage, you do not need to amplify the cable specifications. Or you can make the actual output voltage of the converter 1-2V higher than the set voltage, which is also available.
    2. If the input power line is disconnected or there is a phase loss, the converter will be powered off for protection.
    we are manufacturing a machine compatible with European voltages (230/400VAC 50Hz).
    This machine must also be able to be powered from an airport (115/200VAC 400Hz) as well as with USA voltage (120/210VAC 60Hz).
    Can you confirm that it is possible to have 115/200VAC 400Hz three phase input and 230/400VAC 50Hz output?
    Is the input voltage/frequency adjustable to 120/210VAC 60Hz or do I need to order another one with these specifications?

    Thank you in advance for your reply.

    Translated with (free version)
    From: François | Date: 12/04/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    We can provide single-phase frequency converter with 115V 400Hz input and 120/240V 60Hz split-phase voltage output (L1, L2, N), with a capacity of about 10kVA. The three-phase input 400Hz version is not yet available. For more information, please contact our sales email or technical team email
    Frequency converter damaged in first try out
    I purchased a 10 kVA 3-phase 480V 60Hz / 380V 50 Hz frequency converter. Sadly in our first try-out it got damaged. Initial supply with 400V 50 Hz output was working, but the Infy BEG1K0110 requires some internal charging when changing the state from HALT to ON which seems to trip the current limit of the frequency converter as it always turned off with an error. In our second attempt we made use of another "start-mode" of Infy BEG1K0110, where the internal circuit get's charged via it's DC output. This way we were able to turn on, and apply a load of about 5 kW but soon tripped our laboratories 16A AC circuit breaker (supply for frequency converter).
    From: Johanes | Date: 03/08/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The current suggestion is that regarding the tripping of the 16A AC circuit breaker (powering the drive), is this circuit breaker used with leakage protection? If yes, please replace the circuit breaker with a type without leakage protection, and test again. Check if the circuit breaker still trips.
    If the problem persists, pls open converter side covers, and power on the converter, then take a video showing us the internal main circuit boards, especially the ones with red led indicators and beeping sound, and show us the converter display as well while the converter is running. Also, send us the nameplate of the converter for confirmation so we can proceed to the next step.
    Your frequency converter requires programming?
    Your frequency converter requires programming?
    From: Valle | Date: 30/12/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Complicated programming is not required! As you said, it's just to adjust the converter outputs for required frequency and voltage, no more.
    According to my requirements, which frequency converter do you recommend to me?
    We need to test a unit that powers on at 115V ±5% at 400 Hz. We are supposed to verify that its output voltage and it has an output current of 1A. We are looking to connect the frequency converter to a standard 120 v at 50Hz outlet. What do you recommend?
    From: Ellie | Date: 02/12/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Based on your updates below, recommended frequency converter model: HZ-60-500W, 500VA power capacity, input: 1ph, 110V (+/- 10%), 50/60Hz and output: 1ph (L, N, G), adjustable (0-150V), adjustable (40-499.9Hz), 4.2A.
    I need a product that can convert voltage
    Hi, is there something that can change a European machine that runs on 230 V 50/60 hz 700 watts to 110 volts?
    From: Josieh | Date: 18/10/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, we provide such a converter. But the European standard frequency is 50Hz, and you mention below that the machine is 50/60Hz! May you confirm your machine frequency?
    Also, what is this kind of machine? Is it a motor, electronics, heater, etc?
    Purchase a frequency converter for the inverter charger
    We have 230 (±10%) 50 Hz supply, and want to power up tripp lite 2000 Watt 12V inverter charger APS2012, 120 Volt, 60 Hz. What do you recommend?
    From: Lovett | Date: 08/10/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Recommended frequency converter model: HZ-50-1105, 5kVA power capacity, input: 1ph, 230V (+/- 10%), 50/60Hz and output: 1ph (L, N, G), adjustable (0-150V), adjusted (40-120Hz), 41.6A.
    Connection of 10kVA frequency converter
    Doing a wiring diagram for a customer that purchased your unit a HZ-50-3310. Is the output ground connected to the input side ground internally? Are they both connected to the case? Thanks.
    From: Chernan | Date: 07/09/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, both input and output groundings are connected to each other internally.
    Maximum output current capability of frequency output converter
    We need a frequency converter that can convert:
    Input 1 phase, 240 VAC, 50 hz
    To output: 1 phase, 240 VAC, 60 hz
    This is for a pilot plant that was built in the US but is using Isreali power. Pumps and other motors for the unit are on VFDs. Our Inrush current is 70A. Looks like we need a HZ-50-1120? Is that correct?
    From: Cabriels | Date: 16/08/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, HZ-50-1120 will be okay, as long as your inrush current is 70A. Because converter max output current capability is 83.2A.
    Just the frequency converter I need
    I am seeking on a converter that will accept standard US 110/120 V 60 Hz power and output 230 V 50 Hz power for use with a 200-W instrument with a Singapore (Type G) power plug. This is all I would need the converter to be capable of. Thank you.
    From: Santiage | Date: 20/07/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Based on your specs, recommended frequency converter model: HZ-60-1101, 1kVA power capacity, input: 1ph, 120V (+/- 10%), 50/60Hz and output: 1ph (L,N,G), adjustable ( 0-300V), adjustable (40-120Hz), 4.2A.
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