Oil-immersed Power Transformer

Hermetically Sealed Transformers for Distribution Network System with Option for Mineral or Natural Ester Dielectric Fluid

• This type of transformer is commonly used in distribution network systems
• Transformers can be tailor-made according to the requirement
• Can be used as a step-down transformer in commercial buildings and industrial facilities
• Can be used as a step-up transformer in a Power Plant
• Suitable for any environmental condition with the right coating system
• Transformers are subjected to the tests described in the IEC 60076 series of standards
• Manufactured up to 10 MVA rated power and up to 36kV rated primary voltage

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Features

Efficiency

• Hermetically sealed tanks:
  - No expansion tank is needed
  - Less dielectric liquid is used than in other types of transformer
• No contact between the dielectric liquid and external agents (air, humidity, pollution, etc.)
  - Prevents deterioration of the dielectric’s characteristics
  - Low-level maintenance
• Minimal risk of leakages:
  - Tank robustness (high-quality materials)
  - Welding processes carried out by qualified staff
  - Leak tests were performed in all transformers
• Better losses
• Identical dimensions as of conventional transformers
• Long service life thanks to higher water retention capacity of the dielectric liquid

Sustainability

• Lower noise
• Usage of not ecotoxic dielectric liquid
• Option to use Recyclable and reusable dielectric liquid with High biodegradability (99.99%)

Safety

• Higher fire resistance (Using Natural Esther)
- High flash point (>300 °C)
- High fire point (>360 °C)
• Equipped with a K class liquid acc. to IEC 61100
• Zero toxicity against aquatic organisms

Reliability

• Excellent dielectric properties with high water content
- Higher water saturation point
- High breakdown voltage levels
• 100% routine tested at the factory