2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN

2500kVA  Three Phase Oil Immersed Distribution Transformer Step Down 11000V To 433V ANSI IEEE Standards

Why Choose Us

• True Manufacture — Independently produce silicon steel cores, oil tanks & complete transformers in our own facilities. Not an assembler.
• Flexible Voltage Solutions — 11kV, 13.8kV, 33kV and custom voltage ratios available. Dyn11, Yyn0 and other vector groups on request.
• Full Compliance — Products meet IEC 60076, IEEE, ANSI, GB/T standards. Routine test reports provided with every unit.
• Fast Delivery — 600+ units/month capacity. Standard three-phase transformers in 7–35 days.
• 18 Years, 60+ Countries — Proven in industrial plants, power substations, and infrastructure projects worldwide.
• Full Certifications — ISO 9001 | ISO 14001 | ISO 45001 | UL/cUL | CE | TUV

Product Photos

Main Data

Technical drawings

Standard Features

• Three-Phase Oil Immersed Design — 2500kVA rated capacity for industrial & commercial power distribution
• Dyn11 Vector Group — HV Delta, LV Wye-Neutral (433V) for stable power supply
• ONAN Cooling — Reliable self-cooling design, no additional cooling equipment required
• Off-Circuit Tap Changer — ±2×2.5% tapping range for on-site voltage adjustment
• Bolted Steel Tank — Coated steel tank in RAL7033, durable for indoor & outdoor installation
• Complete Accessories — Oil level indicator, pressure relief valve, temperature indicator, drain valves, lifting lugs

Factory Tests

• Winding Resistance Test
• Insulation Resistance Test
• Voltage Ratio Error Test
• Short-circuit Impedance Test
• No-load Loss (Wattage) Test
• Load Loss (Wattage) Test
• Induced Voltage Withstand Test
• Separate Source Voltage Withstand Test
• Pressure Integrity Test Test

Packing & Shipping to Italy Customer

PRODUCT SPECIFICATION

Production Process