Distribution Transformers
Product Overview
Our oil-immersed distribution transformers are engineered to deliver high efficiency, field reliability, and thermal durability. Fully compliant with IEC 60076 standards and the EU Ecodesign Tier 2 regulation, these transformers serve utilities, heavy industries, solar/wind farms, and large commercial infrastructures to safely step down medium-voltage power for local grids.
Key Advantages
Energy Efficiency
Optimized magnetic core structures and coil designs reduce load and no-load losses, cutting operating expenses.
Durable Construction
Sealed tanks treated with robust, multi-layer anti-corrosion coatings (up to C4/C5 grade) ensure long-term outdoor service.
Advanced Diagnostics
Pre-installed nodes accommodate modern monitoring instruments, including oil level gauges, Buchholz relays, and digital OTI/WTI sensors.
Custom Configurations
Flexible designs adapt to custom installation envelopes, bushing directions, cable terminal layouts, and specific environmental limits.
Core Parameters
10 - 5000 kVA
Up to 36 kV
IEC 60076 / EU Tier 2
Common Applications
- Electric Utility Distribution Subnetworks
- Solar (PV) & Wind Power Generation Sites
- Industrial Processing Plants & Manufacture Sites
- Large-scale Commercial Complexes & Data Centers
- Infrastructure Projects (Railways, Harbors, Airports)
Technical Specification Data
| Technical Parameter | Standard Range / Option |
|---|---|
| Power Ratings | 10 kVA to 5000 kVA |
| HV Voltage Level | 6 kV, 11 kV, 20 kV, 22 kV, 33 kV, 36 kV (others on request) |
| LV Voltage Level | 400 V, 415 V, 420 V, 690 V (custom voltages supported) |
| Frequency | 50 Hz (60 Hz available on request) |
| Cooling Method | ONAN (standard) / ONAF (optional on request) |
| Winding Material | Electrolytic Copper or High-Purity Aluminium |
| Vector Group | Dyn11, Dyn5, Yyn0 (custom vector groups supported) |
| Tap Changer Type | OCTC (Off-Circuit Tap Changer) ±2×2.5% / OLTC (On-Load Tap Changer) |
| Bushing Types | Porcelain Bushings (standard) / Plug-in Elastomeric Bushings |
| Painting Standard | ISO 12944 standard painting systems, up to C5-I / C5-M marine protection |
Standard & Optional Accessories
Testing & Quality Assurance
Every individual transformer manufactured undergoes strict routine testing in compliance with IEC 60076 in our laboratory. We provide a complete Factory Acceptance Test (FAT) report. Routine tests include: Winding Resistance Measurement, Voltage Ratio & Vector Group Check, Impedance Voltage & Load Loss test, No-Load Loss & No-Load Current measurement, Insulation Resistance (Megger), and Applied Voltage & Induced Overvoltage dielectric checks.
Compliance Standard
ISO 9001 & IEC 60076 Verified
Need a custom distribution transformer?
Let our engineering team design a tailor-made solution matching your exact project specs, footprint, and electrical parameters.