logo
Good price online

products details

Home > Products >
Distribution Transformer
>
2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN
Detail Information
Place of Origin:
CHINA
Certification:
CE,ISO
Type:
Oil Immersed Distribution Transformer
Capacity:
2.5MVA (2500KVA)
Primary Voltage:
11000V
Secondary Voltage:
433
Cooling Class:
ONAN
Winding Material:
Aluminum (HV/LV);Vector
Vector Group:
Dyn11
Efficiency Standard(s):
IEEE/ANSI
Delivery Time:
30days
Supply Ability:
500set/month
Product Description

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



Product Photos


2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 02500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 1

2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 2

Packing & Shipping to Italy Customer

2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 32500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 4

Why Choose Us

  • 18 Years Expertise — IEC 60076, IEEE compliant.
  • CE Certified — Ready for European market.
  • 2-Year Warranty — Technical support & after-sales support available.
  • Fast Delivery — 600+ units/month, 7-35 days.
  • Global Track Record — 10,000+ units worldwide, -40°C to 50°C.
  • Custom Design — Flexible voltage ratios available.

2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 5



Main Data


Type Distribution Transformer,Oil immersed (Bolted tank)
Rated capacity 2500kVA
Phase 3
Primary voltage 11000V
Secondary voltage 433V
Cooling method ONAN
Rated frequency 50Hz
Vector group Dyn11
Insulation class A (105℃)
Temperature rise 60/55 (winding/top oil) K
Off-load loss 2500W
On-load loss (75℃) 21500W
Impedance 7.4%
Winding material Aluminum/Aluminum (HV/LV coil)
Core material silicon steel 
Cooling material mineral oil
Dimension 2800*2200*1800 (mm)
Weight 5200kg
Ambient temperature from -5 to +45 (℃)
Sea level ≤1000M
Standard AS60076




Technical drawings


2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 6


2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 7



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

2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 8

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

PRODUCT SPECIFICATION


Rated Capacity High Voltage Low Voltage Connection Symbol Short Circuit Impendence No-load loss On-load loss Dimension Weight
(kVA) (KV) (V)
(%) (W) (W) W*H*D(mm) (kg)
800 4.16KV
12.47KV
13.2KV
13.8KV
24.94KV
34.5KV
or others		 208/120V
480/277V
600V
12470V
13200V
13800V
or others		 Dyn1
Ynyn0
Dyn11
Dd0
Ynd11
or others		 2.7
3.1
4.35
5.75
6		 980 9350 1060*1500*1780 2050
1000 1160 11500 1085*1570*1800 2450
1250 1380 13900 1160*1610*1890 2900
1600 1660 16600 1190*1630*1950 3400
2000 2030 18300 1260*1700*2090 4100
2500 2450 19600 1150*2150*2250 4750
3000 3240 26500 1900*2600*2150 6500
5000 4500 27000 2500*2210*3180 9500
7500 7200 32000 3660*3100*5100 13600
10000 8500 35500 3830*2640*2216 15800



Production Process


2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 9


2500kVA Three Phase Oil Immersed Distribution Transformer Step Down 11kV to 0.433kV ONAN 10


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