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    3 kVA Isolation Transformer, single phase, 208V to 240V

    5 out of 5 based on 2 reviews | Write a review
    3 kVA cheap isolation transformer from ATO is a single phase unit with a primary voltage of 208 volt, it also provides a secondary voltage of 240 volt. Dry type natural air self cooling, IP20 encapsulated enclosure for protection, make it ideal for a wide range of applications.
    Free Shipping Worldwide
    Delivery date: 6-20 days

    3 kVA Isolation Transformer Features

    • Available in the circuit of AC 50Hz/60Hz.
    • To step up/down the single phase voltage 208V to 240V ( Various voltages of primary and secondary are available here for your selection).
    • High efficiency and low temperature rise.
    • Rated for hazardous locations as well as harsh industrial environments.

    3 kVA Isolation Transformer Specifications

    Model ATO-DG3kVA
    Phase Single phase
    Capacity 3kVA
    Primary Voltage 208V AC (optional: 110V/ 120V/ 220V/ 230V/ 240V)
    Secondary Voltage 240V AC (optional: 110V/ 120V/ 208V/ 220V/ 230V)
    Frequency 50Hz / 60Hz
    Winding Material Aluminum/Copper wire (Optional)
    Work Efficiency ≥95%
    Insulation Resistance ≥50 MΩ
    Electrical Strength 2000V AC/1 min
    Noise ≤35dB (1 meter)
    Insulation Grade Grade B (130℃), Grade F (155℃), Grade H (180℃)
    Cooling Method Natural or air cooling
    Overload Capacity Allow more than 1.2 times rated load to work for up to 1 hour
    Induced Overvoltage Withstand Test 125Hz/800V/min
    Transformation Ratio <3%
    Air Carrying Current <6%
    Impedance Voltage about 6%
    Total Losses 10%
    Certification CE, ISO
    Temperature -15℃~+45℃
    Humidity ≤90%RH, without condensation
    Altitude <2000m, non corrosive gas and conductive dust
    Enclosure Protection Grade IP 20
    Warranty 12 months
    Weight of Aluminium Wire Transformer Open type: 27kg
    Protected type: 33kg
    Weight of Copper Wire Transformer Open type: 24kg
    Protected type: 31kg

    Transformer can only convert voltage and CANNOT convert frequency.
    Transformer CANNOT convert single phase voltage to 3 phase voltage.
    Support voltage customization, various specifications customization.

    Single Phase Isolation Transformer Schematic Diagram
    800 VA-15 kVA single phase isolation transformer schematic diagram
    3 kVA Isolation Transformer Dimension

    Single phase isolation transformer open type size

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Open type: a*b*c=192*210*220mm Open type: a*b*c=192*205*220mm
    Protected type: A*B*C=310*270*310mm Protected type: A*B*C=310*270*310mm
    Installation Dimenion: D*E=140*160mm (The Aperture: 17*8mm) Installation Dimenion: D*E=140*140mm (The Aperture: 17*8mm)

    Tips: No-load Current of the 3 kVA Isolation Transformer
    No-load current refers to the current running in the line terminal when a rated voltage with a rated frequency is applied to the terminal of a winding while other windings are open circuit. It's generally expressed by the percentage of the winding's rated current. So the reactive component of the no-load current is greater than the active component and a no-load current is essentially a reactive power, which is generally called as magnetic current. When the 3 kVA isolation transformer is running in no load, the output power is zero, however, a small part of active power will be absorbed from the power supply to compensate the power loss of the isolation transformer, and this part of power becomes heat and dissipates, namely the commonly said no-load loss.

    Need more detail of ATO isolation transformer? Here is a good explanation about it in this video. To test the accuracy of the transformer voltage, we take a 3000 VA single phase 220V iuput to 110V output isolation transformer as an example.

    Existing reviews of 3 kVA Isolation Transformer, single phase, 208V to 240V
    Transform 110V to 220V or 220V to 110V
    The isolation transformer arrived on time and exceeded my expectations for quality. It works perfect in the US with my European devices, transform 110V to 220V or 220V to 110V.
    From: Charlie Chisholm | Date: 18/07/2018
    Was this review helpful? Yes No (0/0)
    Used this 3 kVA step up/down isolation transformer converting 220V (Europe) to 110V (USA)
    I have used this 3 kVA step up/down isolation transformer for about 6 months straight now, converting 220V (Europe) to 110V (USA) for the devices like a Dell Color Laserprinter, a Vizio 80" TV, and a Jura F9 coffee maker. So far it has held up very well. I highly recommend this product to anyone.
    From: James Kelley | Date: 17/10/2018
    Was this review helpful? Yes No (0/0)
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