15 kVA Three Phase Isolation Transformer, 415V to 208V, 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 makes this isolation transformer suitable for outdoor installation?

The IP 24-rated enclosure protects solid objects larger than 12.5 mm and water splashing from any direction, making it suitable for outdoor plant rooms, rooftop electrical installations, and covered outdoor switchgear enclosures. The dry-type, air self-cooling construction eliminates the risk of oil leaks that would pose an environmental concern in outdoor settings. For fully exposed outdoor locations subject to heavy rain or immersion risk, a higher IP-rated external enclosure would additionally be recommended, but for the majority of sheltered outdoor industrial installations, the standard IP 24 housing is sufficient.

Q2. How do I choose between aluminium and copper windings at 15 kVA?

Both winding materials are electrically equivalent at the rated performance specifications. 

• Copper windings offer lower resistive losses and a more compact physical footprint at the same kVA rating, making them the preferred choice in space-constrained installations or where minimising heat generation is a priority. 
• Aluminium windings are lighter and lower in cost, which at 15 kVA can represent a meaningful difference in both shipping weight and unit price — particularly relevant for projects with multiple transformer installations or tight budget constraints. 

Both options carry the same CE/ISO certification, warranty, and performance guarantees.