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500kVA 1000kVA Oil Immersed Distribution Transformer IEC60076 High Efficiency Fully Sealed ONAN Cooling

Product Summary

Product Features Built for utility distribution systems requiring reliable continuous operation. High Energy Efficiency design Fully Sealed Maintenance-Free Tank ONAN Cooling System Low Loss CRGO Core High Quality Transformer Oil Excellent Corrosion Resistance Lightning Impulse Withstand Strong ...

Key Attributes
Brand Name: TNNPI
Model Number: S11/S13/S20
Place of Origin: Henan, China
Certification: CE,UL,ISO
MOQ: 1 piece
Price: 650-18,000 / piece
Supply Ability: 5000pcs/year
Delivery Time: 7-14 work days
Payment Terms: L/C,D/A,D/P,T/T,Western Union
Standard Packaging: Export standard packaging
Product Custom Attributes
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1000kVA Oil Immersed Distribution Transformer

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IEC60076 Oil Immersed Distribution Transformer

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Fully Sealed Oil Immersed Distribution Transformer

Capacity/KVA:
25kVA–5000kVA / Up To 1250A
Rated Voltage:
11kV / 13.8kV / 24kV / 33kV / 34.5kV
Phase:
Three
Rated Frequency:
50Hz/60Hz
Ambient Temperature:
-25°C To +55°C
Application:
Substation
Type Of Cooling:
ONAN Oil Is Self-cooled
Cooling / Insulation:
ONAN / Air Insulated
Short Circuit Withstand:
20kA–31.5kA (3s)
Protection Degree:
IP54 / IP65
Standards:
IEC 60076 / IEC 62271 / IEC 61439
Customization:
Voltage, Capacity, Current, IP Rating, Color, OEM Logo
Product Description

Product Features

Built for utility distribution systems requiring reliable continuous operation.

  • High Energy Efficiency design
  • Fully Sealed Maintenance-Free Tank
  • ONAN Cooling System
  • Low Loss CRGO Core
  • High Quality Transformer Oil
  • Excellent Corrosion Resistance
  • Lightning Impulse Withstand
  • Strong Short Circuit Mechanical Strength
  • IEC Certified Manufacturing
  • Designed for tropical environments

Applications

  • Utility Power Distribution
  • Industrial Plants
  • Commercial Buildings
  • Residential Substations
  • Mining Projects
  • Cement Plants
  • Manufacturing Facilities
  • Infrastructure Projects

Custom Solutions

  • 30kVA–5000kVA
  • 11kV /13.8kV /15kV /22kV /33kV /34.5kV
  • Copper / Aluminum
  • ONAN / ONAF
  • Mineral Oil / Natural Ester Oil
  • Low Noise Version
  • Energy Saving Version
  • OEM Available

FAQ

Q1. What's the service life?

More than 30 years with proper installation.

Q2. Is maintenance required?

The fully sealed design minimizes routine maintenance.

Q3. Can it operate in tropical climates?

Yes. Designed for ambient temperatures up to 50°C with excellent weather resistance.

Q4. Do you provide factory test reports?

Yes. Routine, type and special tests are available upon request.

Overall Rating
5.0
Based on 50 reviews recently
Rating Snapshot
5
100%
4
0
3
0
2
0
1
0
All Reviews
C
Cuman Energy SA from Rwanda
Aug 12.2025
Stable oil level and superior sealing—truly trustworthy.
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S
Stanley Adawu from Ghana
Jul 30.2025
Excellent heat dissipation, low noise, and solid build quality.
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W
Wilson Piguana from Guinea
Jan 8.2025
The quality exceeded expectations, offering excellent value for money.
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