Data centre construction in Asia-Pacific is accelerating, and dry-type cast resin transformers are becoming the preferred choice for indoor MV/LV distribution due to their fire safety and low maintenance profile.
As hyperscale and colocation data centres expand across Southeast Asia, China, and the Middle East, procurement teams are increasingly specifying cast resin dry-type transformers for indoor MV/LV distribution duties. The shift reflects tighter fire safety regulations, rising insurance requirements, and the preference for low-maintenance equipment in mission-critical facilities.
Why dry-type for data centres?
Oil-immersed transformers remain the standard for outdoor grid-connected high-voltage equipment, but dry-type units offer clear advantages for indoor applications:
- Fire safety — No oil means no risk of oil fire or explosion. Critical for facilities with server halls immediately adjacent to electrical rooms.
- No oil maintenance — Eliminates oil sampling, filtration, and annual oil condition testing.
- Smaller footprint — Compact cast resin units fit inside standard MV switchroom layouts without containment bunds.
- Low noise — Suitable for urban facilities where noise limits apply.
Typical specification for data centre dry-type
Most data centre projects specify cast resin transformers in the 630 kVA to 2,500 kVA range, rated for Class F or Class H insulation, with IEC 60076-11 compliance. OLTC (on-load tap changer) is rarely required; de-energised tap changers covering ±2×2.5% are standard.
XinHuan supplies cast resin dry-type transformers from 30 kVA to 2,500 kVA for indoor commercial, industrial, and data centre applications. Enquiries from EPC contractors and data centre developers are welcome.