28kV Oil Immersed Power Transformer
28kV Oil Immersed Power TransformerKey Features:
The 28kV Oil Immersed Power Transformer serves medium-voltage distribution networks with a primary voltage of 28kV.
It steps down incoming power to secondary voltages such as 11kV, 6.6kV, or 0.4kV based on project requirements.
Rated capacities span from 200kVA to 3150kVA for three-phase operation at 50Hz or 60Hz.
Vector groups include Dyn11 and Yyn0, with impedance values ranging between 5% and 7%.
The unit complies with IEC 60076 and GB 1094 standards.
Applications
This transformer supports mining operations, industrial plants producing cement or steel, and infrastructure projects including tunnels and dams.
The discussion in Oil Immersed Transformer for Reliable Industrial Power Distribution adds context for this equipment type.
Continue the technical comparison with 11kV Oil Immersed Power Transformer.
Parameter
Specification
standard
IEC 60076 / GB 1094
capacity
200 kVA – 3150 kVA
hvVoltage
28 kV
lvVoltage
0.4 / 6.6 / 11 kV
frequency
50 / 60 Hz
phase
Three Phase
vectorGroup
Dyn11 / Yyn0
cooling
ONAN / ONAF
impedance
5% – 7%
Capacity (kVA)
No-load Loss (W)
Load Loss (W)
No-load Current (%)
200 kVA
340
2730
1.0
400 kVA
570
4520
0.8
630 kVA
810
6200
0.6
1000 kVA
1150
10300
0.6
2000 kVA
2100
18000
0.5
3150 kVA
3500
26000
0.45
Capacity (kVA)
Length (mm)
Width (mm)
Height (mm)
Total Weight (kg)
Oil Weight (kg)
200 kVA
1200
900
1350
850
200
400 kVA
1400
1000
1500
1150
330
630 kVA
1600
1100
1600
1700
480
1000 kVA
1800
1200
1800
2400
680
2000 kVA
2200
1500
2200
3800
1200
3150 kVA
2600
1800
2400
5200
1800
Typical Voltage Ratio
Recommended Application
28kV/0.4kV
Low-voltage distribution for industrial and commercial loads
28kV/6.6kV
Motors, pumps, compressors and industrial medium-voltage equipment
28kV/11kV
Substation distribution and industrial feeder networks
Custom Ratio
Project-specific distribution or equipment supply
Capacity Range
Typical Application
200–500kVA
Small industrial facilities, workshops and remote installations
630–1250kVA
Manufacturing plants, commercial projects and pumping stations
1600–2500kVA
Mining facilities, cement plants and large industrial loads
3150kVA
Large industrial substations and high-demand distribution systems
Find related configurations within the relevant product category.
