Views: 0 Author: Site Editor Publish Time: 2026-07-14 Origin: Site
Plate-type transformer radiator is the standard heat dissipation component widely equipped on medium & small power transformers with ONAN and ONAF cooling modes. Unlike finned tube OFAF coolers used for large-capacity transformers, plate radiators adopt an integrated welded plate structure, directly mounted on transformer tank walls to dissipate heat through natural air or auxiliary fans. CST Heat Exchanger supplies high-performance plate-type radiators fully compliant with IEC standards, perfectly matching distribution transformers from 10kVA up to 30MVA.
Each plate radiator consists of two steel sheets welded together to form internal flow channels for transformer insulating oil.
1. Hot oil rises from the upper part of the transformer tank and flows into the hollow channels inside radiator plates.
2. Heat transfers from oil to the outer steel plate surface.
3. Heat dissipates to ambient air via natural convection (ONAN) or forced air from external axial fans (ONAF).
4. Cooled oil sinks back to the bottom of the transformer tank to complete circulation.
Main Application Scenarios
- 10kV / 35kV urban distribution transformers
- Factory, commercial building and residential area power transformers
- Medium-sized industrial transformers with ONAF cooling
- Wind farm box-type step-up transformers with small & medium capacity
We customize plate radiators in different sizes, numbers of plates and anti-corrosion coatings based on transformer MVA, ambient temperature and local climate:
- Standard carbon steel plate radiator with C3 anti-rust coating for inland areas
- Upgraded heavy-duty C5-M salt-fog resistant coating for coastal chemical zones
- Custom mounting flanges, connecting pipe sizes to fit all mainstream transformer brands
If you are sourcing supporting heat dissipation components for distribution transformers, send your transformer technical parameters to our engineering team via info@cstheatexchanger.com for a tailored quotation.
