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4 kVA Isolation Transformer, 3 phase, 400V to 208V

5 out of 5 based on 4 reviews | Write a review

$1,424.21

Reasonable price 4kVA isolation transformer, convert 3 phase voltage 400V input to 208V output, provides increased reliability and higher efficiency, make this step up/down transformer ideal for a wide range of applications.

Winding Material *
Primary Voltage (AC) *
Secondary Voltage (AC) *
Transformer Type *
With Movable Wheels *
With Movable Wheels *

SKU: ATO-T-SG4KVA

Qty:

30-day Returns

Delivery date: 10-20 days

Overview
Documents
Relative Video

4 kVA Isolation Transformer Features:

To step down/up the 3 phase voltage 400V to 208V.
Primary and secondary windings are separated by aluminium/copper shield.
Available in the circuit of AC 50Hz/60Hz.
Better protection, high quality workmanship.

4 kVA Isolation Transformer Specifications

Basics	Model	ATO-SG4KVA
	Phase	3 phase
	Capacity	4 kVA
	Weight of Aluminium Wire Transformer	Open type: 50kg Protected type: 65kg
	Weight of Copper Wire Transformer	Open type: 50kg Protected type: 65kg
Technical Parameters	Primary Voltage	400V (Optional: 120V/ 190V/ 208V/ 220V/ 230V/ 240V/ 380V/ 400V/ 415V/ 480V)
	Secondary Voltage	208V (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

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

4 kVA Isolation Transformer Installation Dimension

3 phase isolation transformer dimension

Aluminium Wire Transformer Size				Copper Wire Transformer Size
Open type: abc=300155310mm				Open type: abc=300155310mm
Mouting size: de=180125mm				Mouting size: de=180125mm
Protected type: ABC=300440500mm				Protected type: ABC=300440500mm

Tips: Characteristics of 4 kVA 3 phase isolation transformer at the AC power output

Avoid the current distortion of non-linear load to affect the normal operation of AC power and influence to the Grid, it plays a role in purifying the power Grid.
Take sample at the input end of this three phase 400/230V to 208/120V isolation transformer, so that the distortion of the non-linear load current will not affect the accuracy of the sampling and the control signal that can reflect the actual situation can be obtained.
If the load is not balanced, it will not affect the normal operation of the stabilized voltage power supply.

PDF:

ATO Isolation Transformers Catalog

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 4 kVA Isolation Transformer, 3 phase, 400V to 208V

Wheels for 3 phase 4kVA isolation transformer

We want to remove the wheels on your 3-phase, 4kVA transformer and use the holes to install the transformer on our support. Could you confirm to us if it's possible?

From: Karma | Date: 17/08/2021

Was this review helpful? Yes No (0/0)

ATO Responded

Yes, we can remove the wheels on the transformer, its free option.

How can I choose shipping company while ordering?

I want to use FedEx shipping company to ship to our Site in Japan? Can you do this? How can I choose shipping company while ordering?

From: Matt Duncan | Date: 09/09/2019

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ATO Responded

Yes, we can use any of the 3 shipping companies "UPS/DHL/FedEx", just confirm us by email after ordering.

Awesome Quality

I should give 5 stars because this 4 kVA isolation transformer performs better than expected. It is used to reduce the noise of my audio equipments in my bar. After my equipments hooked up with the secondary outputs, they work nearly perfect without buzzing any more. Moreover, this ATO isolation transformer run incredible quiet and smoothly. It is really recommended when you need a unit to clean noises.

From: Terry | Date: 04/03/2019

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Quiet and powerful isolation transformer

At considerable savings, I bought two 4 kVA isolation transformers from ATO. I use them to transform 460V voltage down to 220V. They are not hard to handle and work really well.They are incredibly quiet and protect my electronic devices from terrible power.

From: Ikari | Date: 27/02/2019

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Aluminium Wire Transformer Size				Copper Wire Transformer Size
Open type: abc=300155310mm				Open type: abc=300155310mm
Mouting size: de=180125mm				Mouting size: de=180125mm
Protected type: ABC=300440500mm				Protected type: ABC=300440500mm

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