When assessing qualified Power Transformer manufacturers, procurement managers often ask: Is a dry-type transformer worth the higher upfront cost compared to an oil-filled unit? The answer lies in total cost of ownership and safety liability. While oil-immersed transformers excel in large utility yards, dry-type units are essential for installations in hospitals, shopping malls, and high-rise residential buildings.
Lugao’s dry-type transformers are constructed with glass-fiber reinforced epoxy resin. This provides a "no-leak, no-spill" solution that eliminates the need for oil containment pits, firewalls, and complex fire suppression systems. Moreover, our cast resin process ensures void-free insulation, which significantly reduces partial discharge levels, a common problem in standard dry-type units that leads to premature failure.
Fire safety is non-negotiable for indoor distribution. Lugao’s dry-type Power Transformer units feature high-voltage windings manufactured in a closed environment using advanced resin casting technology, ensuring 100% void-free insulation. The epoxy resin system is flame-retardant and self-extinguishing, verified through rigorous heat and flame tests. This inherent fire protection not only meets strict safety codes but also protects the winding from moisture and contamination, which is crucial for coastal or underground sites.
Our built-in temperature control system continuously monitors the winding hot-spot temperature, activating cooling fans when needed. This system maintains stable thermal performance under continuous full-load operation, effectively preventing the thermal degradation of the solid insulation and extending the transformer's service life.
Unlike oil-immersed units that require periodic oil testing and filtering, Lugao’s dry-type transformers are virtually maintenance-free. The sealed, solid insulation system prevents moisture ingress and dust accumulation, which are primary causes of dielectric breakdown in humid environments. The absence of oil eliminates environmental liability and the risk of leaks, making it the ideal choice for green building certifications and sensitive ecological zones.
|
Design Aspect |
Dry-Type Transformer (Lugao) |
Oil-Immersed Transformer (Traditional) |
|
Insulation Medium |
Epoxy Resin / Glass Fiber |
Mineral Oil / Paper |
|
Fire Safety |
Flame-retardant, Self-extinguishing |
Requires oil containment & suppression systems |
|
Maintenance |
Minimal (No oil testing/filtering) |
High (Oil filtering, replacement, testing) |
|
Environment |
No leakage risk, ideal for indoors |
Risk of oil spill, requires outdoor siting |
|
Humidity Resistance |
Excellent (Cast resin protects windings) |
Requires careful sealing to prevent moisture ingress |
Lugao manufactures dry-type Power Transformer units strictly in accordance with IEC, GB, CE, and CCC international standards.
33kV / 35kV Dry-Type Transformer ：Designed for mid-size industrial plants and campus networks. Features a compact design with Class F/H insulation, ensuring safe operation in occupied spaces.
24kV / 11kV Distribution Transformer ：Ideal for high-rise residential and commercial complexes. Features cast resin windings and natural air cooling, suitable for vertical installation and high-traffic areas.
10kV / 6.6kV Dry-Type Transformer ：Suitable for rural electrification and commercial buildings where fire safety and minimal maintenance are top priorities.
SCB10, SCB11, SCBH15 Series Epoxy resin cast dry-type transformers with low partial discharge levels and flame-retardant, self-extinguishing characteristics.
Amorphous Alloy Dry-Type Transformer:Energy-efficient design utilizing an amorphous metal core for reduced no-load losses, perfect for sustainable infrastructure.
For buildings and underground installations where space is at a premium, the compact design of dry-type transformers eliminates the need for fire-rated vaults. Lugao offers customized footprint optimization and IP-rated enclosures, allowing installation directly in the basement or on the rooftop, close to the load center, thereby reducing cable costs and distribution losses.
Experience Lugao's Dry-Type Power Transformer manufacturing excellence firsthand:
