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Get an Australian-Made Three-Phase Transformer

From our Melbourne-based factory, Southern Electronic Services manufactures LV dry-type (ANAN) three-phase isolation transformers built to your specifications. Using enameled copper windings and electrical-grade steel, along with our world-class workmanship, we will provide you with the most reliable solution to your isolation transformer needs.

Our experienced team will construct your three-phase transformer using only the best materials suited to your specific project needs. Everything that leaves our factory has been thoroughly tested and is compliant with Australian Standards AS61558 & AS60076.

Our Three-Phase isolation Transformers come standard Delta-Star (Dyn11), but are of course available in any configuration: Delta-Star (Dyn), Star-Star (YNyn), Delta-Delta (Dd0), Star-Delta (YNd) and more.

We guarantee that our transformers have been designed conservatively, and constructed robustly to ensure a durable, reliable product with a 12-month warranty and 25-year+ design life.

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Manufactured to Your Specifications

SES will build three-phase Isolation transformers to meet your specific project needs:

  • 1kVA up to 600KVA power rating
  • Input voltage – designed to your needs, up to 3.3kV
  • Output voltage – designed to your needs, up to 3.3kV, multiple output windings if required
  • ± 2.5% & ± 5% tappings available if required
  • Insulation classes – Class F (150°C) & Class H (180°C) as standard
  • Low load regulation
  • Enameled copper windings
  • Copper busbar terminals standard, other termination options available
  • Brass Earth stud provided on frame for connection
  • Electro-static screening if required
  • Tough varnish impregnation insulation coating
  • Additional switchgear fitting if required
  • Choice of enclosure rating (open, IP23, IP65, other)
SD415-60kVA-IP65 3ph isol. TF IP65 (outdoor) enclosure

Any More Questions?

To help us provide you with the best solution to your needs please contact us

Conatct us  Call Us – (03) 9706 4202

IP23 enclosure – steel mesh in the base, and vents at the top allow for ANAN convection cooling.

Enclosures for Your Three-Phase Transformer

Southern Electronic Services can supply your transformer open, or encase your three-phase transformer in an oyster grey powder-coated steel enclosure for hard wiring. Our standard enclosures are rated at IP23 (indoor), or IP65 (outdoor) for when more protection is necessary. Outdoor enclosures typically come with wiring chambers fitted to the side to house input/output terminals.
Check this useful IP rating table.

We also offer wall-mounted enclosures for smaller 3-phase isolation transformers up to about 5kVA.

Why choose an Isolation Transformer

An isolation transformer, as the name suggests, isolates your equipment, circuitry, or device from the main power source, protecting your equipment and personnel. The primary advantages of an Isolation Transformer over an Auto Transformer are safety, surge reduction, noise reduction and better overall power quality.

Southern Electronic Services have built a huge range of Isolation Transformers over the years. The quality of our workmanship, thorough testing procedures, and shared expertise allow us to build you a custom isolation transformer to your specific requirements, fast. SES Isolation Transformers are designed, built and tested to AS/NZS 61558.2-4 .

Isolation – or isolating – transformers are a more reliable product than modern solid-state power control devices. Solid-state drives generate extreme stresses due to the harmful harmonic content they cause and the high mechanical strain they place on power supplies.

If you’re not sure of your transformer requirements, please give us a call 03 9706 4202 and speak to our team.

Custom design & construction means we can include additional requirements such as ±% tappings seen here.