520mm Transformer Radiator Manufacturer | High-Capacity Cooling Solution for Power Transformers
OEM Corrugated 520mm Transformer Radiators for Large Distribution & Power Transformers
A 520mm transformer radiator is a heavy-duty cooling component designed for large oil-immersed power transformers where high heat dissipation efficiency, long service life, and stable thermal performance are required.
As a professional transformer radiator manufacturer and OEM factory, we produce high-performance corrugated radiator panels for utilities, EPC contractors, transformer OEMs, and industrial power projects worldwide.
Our 520mm radiators are engineered for maximum cooling capacity, high pressure resistance, and long-term corrosion protection in harsh environments such as deserts, coastal regions, and high-load industrial substations.
Why 520mm Transformer Radiator Is Used in Large Transformers?
The 520mm radiator panel is wider than standard 310mm and 480mm designs, offering:
1. Maximum Cooling Surface Area
The wider corrugated fins significantly increase heat exchange efficiency, allowing faster transformer oil cooling under heavy load conditions.
2. Suitable for High Power Ratings
520mm radiators are typically used in:
- 2500 kVA transformers
- 3150 kVA transformers
- 4000 kVA transformers
- 5000 kVA transformers
- 6300 kVA and above custom designs
3. Stable Operation Under High Temperature
Designed for continuous operation in:
- Power grid substations
- Industrial mining systems
- Renewable energy plants
- Heavy-duty distribution networks
OEM 520mm Transformer Radiator Manufacturer
We provide full OEM and ODM services for global transformer manufacturers.
Manufacturing Capabilities:
- Customer drawing production
- Thermal design support
- Custom flange design
- IEC-compliant production
- Private labeling (OEM branding)
We support both standard models and fully customized radiator systems based on transformer heat loss calculations.
High-Quality Materials & Surface Protection
Our 520mm transformer radiators are manufactured using:
Premium Materials
- Cold rolled steel sheet (high strength)
- Precision hydraulic corrugated forming
Surface Treatment Options
To ensure long service life in different environments:
- Hot-Dip Galvanized (HDG)
- Epoxy resin coating
- Powder coating
- Marine-grade anti-corrosion coating
Environmental Suitability:
- Coastal high humidity areas
- Desert sand & heat zones
- Industrial pollution environments
- Offshore substations
Strict Quality Control System
Every radiator undergoes a complete inspection process:
- Air pressure leak test
- Hydraulic pressure test
- Welding seam inspection
- Dimensional accuracy check
- Surface coating thickness test
- Final visual inspection
✔ 100% leak-tested before shipment
✔ Traceable production batch system
Technical Specifications of 520mm Transformer Radiator
| Item | Specification |
|---|
| Product Type | 520mm Transformer Radiator |
| Panel Width | 520 mm |
| Height Range | 600 – 3500 mm (customizable) |
| Material | Cold Rolled Steel |
| Cooling Type | ONAN / ONAF |
| Surface Finish | HDG / Powder Coating / Epoxy |
| Connection | Flange Type |
| Pressure Test | Up to 0.8 MPa |
| Standard | IEC Standards |
| OEM Service | Available |
Applications of 520mm Transformer Radiators
Our radiators are widely used in:
- Power transmission substations
- Large distribution transformers
- Renewable energy power plants (solar & wind)
- Industrial mining power systems
- Railway traction power systems
- Heavy EPC infrastructure projects
- National grid upgrade projects
Manufacturing Process (Factory Level Control)
Our production line includes:
- Steel sheet inspection
- CNC cutting & forming
- Hydraulic corrugation pressing
- Automatic robotic welding
- Flange assembly
- Pressure testing (air & hydraulic)
- Surface coating treatment
- Final QC inspection
- Export-grade packaging
✔ Each batch is fully traceable for quality assurance
520mm vs 480mm vs 310mm Transformer Radiator
| Model | Application | Cooling Capacity |
|---|
| 310mm | Small transformers | Standard |
| 480mm | Medium power transformers | High |
| 520mm | Large power transformers | Very High |
Selection Guide:
- Use 310mm for compact distribution transformers
- Use 480mm for standard power distribution
- Use 520mm for high-load and large-capacity transformers
Final selection should be based on:
- Transformer losses (no-load + load losses)
- Ambient temperature
- Cooling design (ONAN/ONAF)
- Installation space
OEM & Custom Engineering Service
We support full customization:
- Radiator height adjustment
- Fin density optimization
- Flange size customization
- HDG thickness upgrade
- Logo printing
- Export wooden crate packaging
Why Global Customers Choose Us
Factory Direct Supply
No trading intermediaries → lower cost + faster communication
Engineering Support
We support transformer manufacturers with thermal design assistance
Fast Production
- Standard models: 15–20 days
- Custom models: based on engineering confirmation
Global Export Experience
Products supplied to:
- South America
- Middle East
- Africa
- Southeast Asia
- Europe
- Central Asia
Frequently Asked Questions (FAQ)
What is a 520mm transformer radiator?
It is a wide corrugated cooling panel used in large oil-immersed transformers for high heat dissipation efficiency.
Can you manufacture according to drawings?
Yes. We fully support OEM manufacturing based on customer technical drawings.
What coating options are available?
Hot-dip galvanized, powder coating, epoxy coating, and marine-grade protection are available.
What pressure tests are performed?
All radiators are tested using air pressure and hydraulic pressure up to 0.8 MPa.
What information is needed for quotation?
- Transformer kVA rating
- Radiator dimensions
- Quantity
- Flange size
- Destination country
- Technical drawings (if available)
Get a Fast Quote for 520mm Transformer Radiator
Looking for a reliable 520mm Transformer Radiator Manufacturer?
We provide:
✔ OEM Manufacturing
✔ Factory Direct Pricing
✔ Technical Engineering Support
✔ Fast Production & Delivery
✔ Global Shipping
👉 Send us your transformer specifications and receive a professional quotation within 24 hours.
