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Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA
Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA
Specifications
Description
Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA
Product Specifications
Attribute Value
Frequency 50Hz, 60Hz
Phase Three
Coil Number Multi Winding, Three Windings, Two Windings, Single Winding
Application Distribution system
Coil Structure Round coil
Output Voltage 415V, 220V, 380V, 400V, 440V
Input Voltage 10.5kV, 3kV, 6.6kV, 6.3kV
Type Oil-Immersed Transformer
Winding Material 100% Copper/Aluminum
Cooling Method ONAN
Capacity 400KVA, 500KVA, 630KVA
Vector Group Dyn11 / Yyn0
Temperature Rise Less than 65°C
Efficiency Up to 99%
Product Description

Oil-immersed transformers with optimized cooling channels using pressboard gaskets—supporting both ONAN and ONAF cooling for efficient heat management. Designed for low loss, high efficiency, and excellent cooling performance, our transformers are widely used in power grids, industrial zones, and renewable energy projects. Custom designs are available, fully compliant with IEC, ANSI, and other international standards.

Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA
Key Advantages
  • Significantly reduces operational costs and energy consumption
  • Extended maintenance intervals with reduced upkeep costs
  • Reduces no-load loss for improved efficiency
  • Customization available to meet specific requirements
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 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
Consulting & Ordering Process
Step 1: Inquiry & Quotation

We respond within 1 hour with suitable transformer recommendations, competitive quotations, and payment terms. Our technical team will confirm all specifications within 7 days after payment, including technical data, weight, and parts list.

Step 2: Production & Quality Control

After finalizing production drawings, we prepare materials and conduct rigorous quality inspections. We provide QC reports and test certificates to guarantee product quality. Special accessory requirements can be accommodated.

Step 3: Installation & After-Sales

Our professional team provides installation guidance and on-site support when needed. All products come with a minimum 2-year warranty for your peace of mind.

Why Choose Our Transformers?
  • In-house R&D and manufacturing ensures quality control
  • Fast delivery with quick response to inquiries
  • OEM/ODM customization available
  • Comprehensive after-sales support
  • Extensive export experience worldwide
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Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA

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Factory Direct Sale Three Phase Step Down High Voltage Oil Transformers 400KVA 500KVA 630KVA

Hunan Hentg Power Electric Technology Co., Ltd.

Verified Supplier
1 Years
hunan, changsha
Since 2011
Business Type :
Manufacturer, Exporter, Trading Company, Seller
Main Products :
Oil Immersed Transformer, Dry Type Transformer, Compact Substation Transformer
Total Annual :
50000000-100000000
Employee Number :
200~250
Certification Level :
Verified Supplier
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