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                                5 kVA Isolation Transformer, 3 phase, 480V to 400V

                                4.8 out of 5 based on 5 reviews | Write a review
                                3 phase 5 kVA isolation transformer is designed to step down/ up the voltage 480V to 400V, and widely used in various power supply sites with frequency 50Hz or 60Hz.
                                SKU: ATO-T-SG5KVA
                                Free Shipping Worldwide
                                Delivery date: 10-20 days

                                The 5kVA isolation transformer is high quality, three phase, 480V primary voltage and 400V secondary voltage, manufactured direct sale. Fully compliant with reduced low voltage regulations, is a non-ventilated isolation transformer rated for hazardous locations as well as harsh industrial environments.
                                5 kVA Isolation Transformer Specifications

                                Basics Model ATOSG-5KVA
                                Phase 3 phase
                                Capacity 5 kVA
                                Weight of Aluminium Wire Transformer Open type: 55kg
                                Protected type: 70kg
                                Weight of Copper Wire Transformer  Open type: 56kg
                                Protected type: 70kg
                                Technical Parameters Primary Voltage 480V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
                                Secondary Voltage 400V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
                                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

                                *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

                                5 kVA Isolation Transformer Installation Dimension

                                ATO isolation transformer installation dimension

                                Aluminium Wire Transformer Size Copper Wire Transformer Size
                                Open type: a*b*c=380*220*380mm Open type: a*b*c=300*170*310mm
                                Protected type: A*B*C=440*300*500mm Protected type: A*B*C=440*300*500mm
                                Installation Dimenion: D*E=260*110mm Installation Dimenion: D*E=180*140mm

                                Tips: Dyn11 Wiring Method of 3 Phase Step up & Step down Isolation Transformer
                                Dyn11 is ATO step up/down isolation transformers wiring method. D represents that the primary winding adopts triangular form wiring, Y represents the secondary measuring winding adopts star form wiring, n represents to lead the neutral line, 11 represents that the secondary winding phase angle lags 330 degrees compared with the first winding. If use clock representation method and assume the primary winding locates at the center of 12 o'clock, then the secondary winding locates at 11 o'clock position with an included angle of 30 degrees.

                                3d图库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 5 kVA Isolation Transformer, 3 phase, 480V to 400V
                                High Quality isolation transformer
                                Great isolation transformer for the price. The quality is much better than expected and it runs quite cool.
                                From: Trent | Date: 14/05/2018
                                Was this review helpful? Yes No (0/0)
                                Voltage stability, Easy installation
                                Purchased this 5 kVA isolation transformer for the machine tools in the workshop, easy to install, and the voltage is stable during operation.
                                From: Keith | Date: 12/06/2018
                                Was this review helpful? Yes No (0/0)
                                Do you have warranty policy
                                Do you have warranty policy for this isolation transformer?
                                From: Nicholas | Date: 09/07/2018
                                Was this review helpful? Yes No (0/0)
                                ATO Responded
                                Dear friend, ATO offers at least 1 year warranty for all isolation transformers, and full lifespan aftersales service.
                                Very affordable isolation transformer
                                This is very affordable isolation transformer, I bought this to work mainly up scaling 110v to 220v, it has done its job and has worked alot better than the items found on other website.
                                From: Tatsuo Hase | Date: 06/11/2018
                                Was this review helpful? Yes No (0/0)
                                Is your isolation transformer bidirectional?
                                For example, if your transformer is to convert 3ph, 220V primary to  3ph, 400V secondary, and I apply 3ph, 400V at secondary side, will I get 3ph, 220V at primary side?
                                From: Charlie Chisholm | Date: 14/10/2019
                                Was this review helpful? Yes No (0/0)
                                ATO Responded
                                Our Isolation Transformer can be used in both directions, but the output voltage will be reduced by 2% incase of reverse. Per your example, the voltage of 220V will become 215V.
                                Write your review for 5 kVA Isolation Transformer, 3 phase, 480V to 400V
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