3 Phase Step-up Transformers

Our step-up transformers are typically autotransformers. This means they do not provide galvanic isolation. However, if your operations require full isolation, we do offer 3-phase isolation transformers. Reach out to our team today to discuss your requirements or concerns.

Imported machinery often operates at a different voltage than Australia’s 415V (400V nominal) supply. Running directly from 415 V mains may cause undervoltage or overvoltage faults, heat stress, and equipment malfunction.

Supply voltages also often differ for Australian-made export equipment. At Southern Transformers, every unit, whether for import or export, is tailored to match your required input and output voltages precisely.

You’ll need to confirm either from the equipment rating plate, or supplier, as the US has two main 3 phase voltage levels they work with; commonly either 208v-220v, or 460V-480V.

Our SD480 range is the most commonly used type of step-up transformer converting Australia’s 415V up to 480V range, whereas our SD220 range steps Australia’s 415V down to 220V.. It converts large industrial equipment, pumps, compressors, VFDs, and HVAC systems from the USA, 480V is a common voltage.

Regardless of the application and voltage, you can be sure Southern Transformers has a solution.

If you have specific voltage requirements, we can customise step-up transformer solutions for you. Every Southern Transformers step-up transformer is designed and manufactured in-house, allowing us to fine-tune voltage, impedance, and connections to suit your exact machinery and installation needs.

Many mining and heavy industrial operations rely on higher voltage networks to improve efficiency and reduce current draw across large sites.

Southern Transformers step-up transformers are designed to be rugged, copper-wound devices that allow exact voltage configuration to match site distribution systems and equipment requirements.

In renewable, remote, or large-scale infrastructure, long distribution runs can introduce significant voltage drop, power loss and costly wiring runs if running 4-core 415V cable. Step-up transformers can be used to maintain stable, efficient performance across your network, and reduce cable costs significantly.

At Southern Transformers, we configure the optimal voltage ratio and winding arrangement to ensure your step-up transformer makes a difference in your operations.

With full build capability, we ensure each transformer precisely replicates your target supply voltage, giving you confidence before export or installation.