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Electric Step Down Power Transformer MV HV Oil Immersed Distribution Transformer 500kva 1000Kva

Electric Step Down Power Transformer MV HV Oil Immersed Distribution Transformer 500kVA-1000kVA

Product Specifications

Attribute	Value
Type	Distribution transformer, Oil-filled Transformer
Material	Copper
Frequency	50Hz, 60Hz
Shape	Rectangle
Winding Material	Copper
Application	High Frequency
Phase	Three
Coil Structure	Circular coil
Coil Number	Dual-winding coil
Input Voltage	10kV, 6kV, 6.3KV
Output Voltage	0.4KV
Cooling Method	ONAF
Vector Group	Yyn0/Dyn11
Standard	IEC60076
Transformer type	S13 Oil-immersed Transformer
Warranty	3 Years
Capacity	500KVA~1000KVA
Impedence	4% or Customized
Installation Method	Outdoor
Dielectric	Mineral oil (PCBs is prohibited)

Product Overview

Our oil-immersed distribution transformers range from 30kVA to 2500kVA, with voltage levels up to 35kV. They are widely used in power utilities, renewable energy, industrial facilities, railway systems, and urban infrastructure. Designed to IEC and ANSI standards, our transformers offer high efficiency, low losses, and long service life, suitable for both indoor and outdoor environments.

Key Advantages

Higher Energy Efficiency - Lower no-load loss (20-30% reduction compared to S11 models) and improved winding structure reduce resistance and load losses.
Improved Temperature Rise Performance - Enhanced oil circulation and cooling systems maintain stable operation under load, extending insulation life.
Reduced Noise Levels - High-permeability silicon steel and precision manufacturing lower magnetostriction for quieter operation.
Robust Mechanical Design - Optimized winding structure and clamping improve short-circuit resistance and reduce vibration.
Longer Service Life - Superior materials and structural improvements enable 20-30 years of service under proper conditions.

Technical Parameters

Rated capacity (KVA)	Vector Group	Voltage Combination	No-load loss	Load loss	No-load current	Impedance
30	Yyn0 / Dyn11	10 6.3 6 ±5% ±2X2.5%	80	630	1.5	4.0
50			100	910	1.3
63			110	1090	1.2
80			130	1310	1.2
100			150	1580	1.1
125			170	1890	1.1
160			200	2310	1.0
200			240	2730	1.0
250			290	3200	0.9
315			340	3830	0.9
400			410	4520	0.8
500			480	5410	0.8
630			570	6200	0.6	4.5
800			700	7500	0.6

Our Service Process

Step 1:

We respond within 1 hour with suitable transformer recommendations, reasonable quotations, and payment terms. Our technical team will confirm all drawing details within 7 days after payment.

Step 2:

After design approval, we prepare stock, manufacture, and conduct rigorous quality inspections. We provide QC and test reports for all products.

Step 3:

We offer professional installation guidance or on-site support, plus a 2+ year warranty service.

If you have any questions, please contact us for discussion!

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