8 kVA Three Phase Isolation Transformer, 480V to 240V, Step Up/Down

Note:

1. The transformer can only convert voltage, and CANNOT convert frequency.
2. The transformer CANNOT convert 1-phase voltage to 3-phase voltage.
3. Input/output voltage, power rating, and whether a shell for all transformers can be customized to meet clients' requirements.

Q1. What is the advantage of an aluminium/copper shielded winding over a standard isolation transformer?

A standard isolation transformer breaks the galvanic connection between primary and secondary, but still allows some high-frequency noise to pass through via capacitive coupling between the windings. The aluminium/copper electrostatic shield inserted between windings intercepts this capacitively coupled interference and diverts it to ground, resulting in a much cleaner secondary output voltage. This is especially important in environments with variable-frequency drives (VFDs), switching power supplies, or other sources of high-frequency electrical noise — such as manufacturing plants, CNC facilities, and commercial buildings with heavy mixed loads — where even small amounts of noise can cause errors in sensitive control electronics.

Q2. Can I choose 230V or 400V as the secondary voltage instead of 240V?

Yes. The secondary (output) voltage is not fixed at 240V. Both primary and secondary voltages are independently selectable from a range of standard values, including 120V, 190V, 208V, 220V, 230V, 240V, 380V, 400V, 415V, and 480V. This makes the ATO-SG8KVA adaptable to UK and Australian 230V systems, European 400V three-phase networks, and a wide range of other international grid standards — all from a single configurable unit. Specify your required voltage pair and any other options at the time of order.

Q3. Where is this 8 kVA 3-phase isolation transformer most commonly used?

The 480V-to-240V 3-phase conversion this transformer provides is a common requirement across several sectors. In North America, 480V is a standard industrial distribution voltage, while much of the downstream equipment — especially imported machinery, lighting systems, and smaller three-phase loads — operates at 240V. Beyond manufacturing and machine tool workshops, this unit is also regularly deployed in metro & rail transit infrastructure, commercial buildings requiring stepped-down power feeds for distributed equipment, and oil, gas & petrochemical facilities where reliable, shielded isolation transformers are preferred for safety and equipment protection.