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Onaf Transformers

ÖZ GÖKÇE ELEKTRİK > Transformer > Onaf Transformers
ÖZ GÖKÇE TRANSFORMATÖR
Oz Gokce Electric

Onaf Transformers

Forced Oil-Cooled, Air-Supported Transformers

ONAF (Oil Natural Air Forced) type transformers are designed for high-power energy needs. They operate with natural oil circulation and a fan-supported air cooling system. This system keeps the transformer's temperature under control despite increased load, allowing it to operate safely at a higher capacity.

 
Technical Specifications

  • Power Range: 1000 kVA – 40,000 kVA

  • Primary Voltage: 3.6 kV – 170 kV

  • Cooling Type: ONAF (Oil Natural Air Forced)

  • Frequency: 50 Hz / 60 Hz

  • Insulation Level: Compliant with IEC 60076 standards

  • Protection Class: IP00 / IP23 (optional)

  • Cooling Components: Thermostat-controlled fan groups, oil pump (optional)

  • Vector Group: YNyn, Dyn, YNd, or project-specific groups

You can contact our technical team to get detailed information about our ONAF-type transformer solutions and to create a project-based quote.

Advantages / Areas of Use

  • Continuous operation capability at high power
  • Automatic fan engagement system during load increases
  • Long-lasting and high-safety oil system
  • Low noise level and high efficiency
  • Redundant cooling option for critical systems
  • Energy generation plants
  • High-power industrial facilities
  • MV/LV switchgear centers
  • Renewable energy projects (solar / wind)
  • Urban grid main distribution points