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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.

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Primary Voltage (AC) *
Secondary Voltage (AC) *
Transformer Type *
With Movable Wheels *
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SKU: ATO-T-SG25KVA

Qty:

30-day Returns

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

3 Phase Isolation Transformer Details

25 kVA Isolation Transformer Installation Dimension

Aluminium Wire Transformer Size				Copper Wire Transformer Size
Open type: abc=440330430mm				Open type: abc=440330420mm
Mouting size: de=300185mm				Mouting size: de=300185mm
Protected type: ABC=420610610mm				Protected type: ABC=420610610mm

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

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.
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.
Confirm the required input rated current (A) of the electrical equipment to determine the transformer capacity (KVA).
Insulation class requirements: A class 105 ℃, B class 130 ℃, F class 155 ℃, H class 180 ℃.
Autotransformer or isolated transformer.

Existing reviews of 25 kVA Isolation Transformer, 3 phase, 380 Volt to 220 Volt

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

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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

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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

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

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ATO Responded

Yes, we can, recommended transformer for each pump will be 25kVA capacity.

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

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Aluminium Wire Transformer Size				Copper Wire Transformer Size
Open type: abc=440330430mm				Open type: abc=440330420mm
Mouting size: de=300185mm				Mouting size: de=300185mm
Protected type: ABC=420610610mm				Protected type: ABC=420610610mm

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