How Are Transformer Cooling (Radiator) Banks Arranged?
Quick answer — Cooling (radiator) banks are arranged around the tank to provide the required area for the losses, with the banks positioned for even oil flow and a good air supply. They are sized and spaced for the design temperature rise, and connected by the oil taps on the tank. On ONAF units fans are mounted on or near the banks, and the banks must be kept clean and free to let the air flow.
How are transformer cooling banks arranged?
Arrangement
The radiator banks are arranged around the tank with the correct area, spacing and oil-flow path for the design cooling.
Air and fans
For ONAF, fans are mounted on/beside the banks to force the air and raise the cooling; the air must flow freely and be unobstructed.
Maintenance
Keep the banks clean (dirt and leaves block the air), check the fans and the oil flow, and confirm the arrangement meets the temperature-rise design.
References & standards
- IEC 60076-2
- IEC 60076-7
Related
Related manufacturers
Prolec GE (GE Vernova) · Prolec GE Waukesha · Hitachi Energy USA · Siemens Energy · Eaton · Virginia Transformer Corp
Related components
Technical content is prepared from engineering references, standards frameworks, manufacturer documentation and industry sources. Contractual or compliance decisions should refer to current official standards. TransformerPath Technical Editorial.
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