Close
(0) Shopping cart
You have no items in your shopping cart.
Shopping Categories
    Menu
    Shopping cart
    Filters
    Preferences
    Search
    25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Picture of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt

    25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt

    5 out of 5 based on 4 reviews | Write a review
    $4,439.68
    3 phase 380V to 220V isolation transformer is 50/60 Hz rated, available with aluminium/copper wire winding material, the effective performance and high quality features make it ideal for use in the electrical and the engineering industries.
    SKU: ATO-T-SG25KVA
    *
    *
    *
    *
    *
    *
    Delivery date: 10-20 days

    Low price 25 kVA isolation transformer is designed to step down 3 phase voltage 380 volt to 3 phase 220 volt, also step up 220 volt to 380 volt vertion for selection, suitable for indoor applications.

    25 kVA Isolation Transformer Specifications

    Basics Model ATO-SG25KVA
    Phase 3 phase
    Capacity 25 kVA
    Weight of Aluminium Wire Transformer Open type: 140kg
    Protected type: 165kg
    Weight of Copper Wire Transformer Open type: 142kg
    Protected type: 168kg
    Technical Parameters Primary Voltage 380V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Secondary Voltage 220V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
    Voltage Convert Three phase to three phase
    Frequency 50Hz / 60 Hz
    Winding Material Aluminium/Copper wire (Optional)
    Work Efficiency ≥95%
    Insulation Resistance ≥50 MΩ
    Electrical Strength 3000V AC/1 min
    Noise <35-65dB (1 meter)
    Insulation Grade H level
    Wiring Mode Dyn11
    Cooling Mode Dry type air cooling
    Overload Capacity Allow more than 1.2 times rated load to work for up to 4 hours
    Enclosure Protection Grade IP 24
    Certificate CE, ISO
    Warranty 12 months
    Working Environment Temperature -15℃~+40℃
    Humidity ≤90%RH, without condensation
    Altitude <1000m, non corrosive gas and conductive dust

    Note:
    Transformer can only convert voltage and CANNOT convert frequency.
    Transformer CANNOT convert single phase voltage to 3 phase voltage.
    Input/output voltage, power rating and whether with shell of all transformers, can be customized according to clients' requirements.

    3 Phase Isolation Transformer Schematic Diagram

    ATO isolation transformers schematic diagram

    3 Phase Isolation Transformer Details

    3-phase isolation transformer details

    25 kVA Isolation Transformer Installation Dimension

    3 phase isolation transformer dimension

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Open type: a*b*c=440*330*430mm Open type: a*b*c=440*330*420mm
    Mouting size: d*e=300*185mm Mouting size: d*e=300*185mm
    Protected type: A*B*C=420*610*610mm Protected type: A*B*C=420*610*610mm

    Tips: How to select a 3 phase step up & step down isolation transformer?

    1. Confirm the power supply voltage (V) provided by the grid and the required input rated voltage of the electric equipment to determine the voltage (V) ratio of the transformer.
    2. Confirm the phase number of the input power supply required by electrical equipment to determine whether to make three-phase or single-phase system transformer.
    3. Confirm the required input rated current (A) of the electrical equipment to determine the transformer capacity (KVA).
    4. Insulation class requirements: A class 105 ℃, B class 130 ℃, F class 155 ℃, H class 180 ℃.
    5. Autotransformer or isolated transformer.

    How to Test Step Up & Step Down Isolation Transformer?

    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 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    Nothing to say, very reliable transformer
    I am quite pleased with this 25 kVA isolation transformer. Although it is a little heavy but then fit for purpose. I also like that this is a dual function transformer to work in reverse to step down 220 volts to 120 when needed. Will surely recommend for people who want to use appliances across countries.
    From: Bill Porter | Date: 25/09/2018
    Was this review helpful? Yes No (0/0)
    Can you supply 2 transformer to suit my requirements?
    We have an industrial installation for Canada. Supply voltage 400v 60Hz 3ph. Motor spec 460V 60Hz 3ph 25hp. There are two of these pumps. Can you supply 2 transformer to suit these requirements?
    From: Braeden | Date: 10/10/2019
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, we can, recommended transformer for each pump will be 25kVA capacity.
    Need a isolation transformer with 15kVA rating
    The capacity of this 25kVA isolation transformer is to big for us. Can you provide us a model for a transformer with the following characteristics?
    15kVA rating
    3 Phase
    Input:127/220Volts
    Input configuration: Y or Delta
    Output: 220/380Volts
    Output configuration: Y
    Isolated.
    Enclosed.
    From: Lachlan | Date: 28/12/2020
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, recommended Isolation Transformer SKU:  ATO-T-SG15KVA
    Power capacity: 15kVA
    Primary: 3ph, Delta (L1,L2,L3 + G), 220V
    Secondary: 3ph, Wye (L1,L2,L3 + N,G), 380V
    50/60Hz
    Aluminum wire
    Cooling Mode: Dry type air cooling.
    Type: Protected.
    The site link: https://www.ato.com/15-kva-isolation-transformer
    3-phase isolation transformer works great!!
    Opened this 25kVA isolation transformerup to change to the recep to an isolated ground recep (orange). Wiring and terminations were done well inside. Durable steel housing. Nothing scammy inside.
    From: zta | Date: 23/05/2022
    Was this review helpful? Yes No (0/0)
    Write your review for 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt
    • Only registered users can write reviews
    • Bad
    • Excellent
    Related products
    10 kVA Isolation Transformer, 3 phase, 400 Volt to 240 Volt

    10 kVA Isolation Transformer, 3 phase, 400 Volt to 240 Volt

    $2,635.71
    SKU: ATO-T-SG10KVA
    Safety 10 kVA isolation transformer is suitable for circuit of 50 or 60Hz, 3 phase, primary voltage 400V to secondary voltage 240V. The transformers is high quality with lower cost, manufactured direct sale and fully compliant with reduced low voltage regulations.
    15 kVA Isolation Transformer, step up/step down 415V with 208V

    15 kVA Isolation Transformer, step up/step down 415V with 208V

    $3,203.97
    SKU: ATO-T-SG15KVA
    3 phase high quality isolation transformer with 15 kVA power rating, better dielectric strength and insulation resistance. Step up or step down transformer to change the voltage between 415V and 208V, suitable for both indoor and outdoor applications.
    20 kVA Isolation Transformer, Single phase, 240V to 208V

    20 kVA Isolation Transformer, Single phase, 240V to 208V

    $3,388.89
    SKU: ATO-T-DG20KVA
    The 20 kVA capacity transformer from ATO is safety and isolation single phase transformer, it can step down 240 volt input voltage to output 208 volt, can step up 208 volt to 240 volt as well. This good price isolation transformer provides enhanced electrical isolation between the line supply and the application.
    20 kVA Isolation Transformer, 3 phase, 380V to 190V

    20 kVA Isolation Transformer, 3 phase, 380V to 190V

    $3,853.97
    SKU: ATO-T-SG20KVA
    High performance 20kVA isolation transformer is designed to step down/up the 3 phase voltage 380V to 190V. Primary and secondary windings are separated by aluminium/copper shield, and widely used in various power supply sites with frequency 50Hz/60Hz.
    30 kVA Isolation Transformer, 3 phase, 480 Volt to 415 Volt

    30 kVA Isolation Transformer, 3 phase, 480 Volt to 415 Volt

    $5,129.37
    SKU: ATO-T-SG30KVA
    High efficiency 30kVA solation transformer is dry type air self cooling one, which is available in the circuit of AC 50Hz/60Hz and convert 3 phase voltage 480V to 415V, step up 415V to 480V is optional, low cost and manufactured direct sale.
    Information
    Customer service
    Resource
    Contact ATO
    • +1 800-585-1519 (Toll-free)
    • Global Shipping
    Safe Shopping
    • Safe Shopping on ATO
    Copyright © 2022 ATO.com. All rights reserved.