Our 20kV Dry-Type Power Transformers represent a high-reliability solution for modern 20kV and 24kV medium-voltage distribution networks. Available in capacities from 100kVA to 2500kVA, these units utilize Vacuum Cast Resin (VPI) technology, making them the safest choice for indoor environments where oil leakage and fire risks are strictly prohibited.

The SCB11 and SCB13 series are specifically engineered to bridge the gap between high-voltage efficiency and compact urban installation. Featuring self-extinguishing epoxy resin windings, these transformers eliminate the need for fire-walled vaults. Whether you are powering a metropolitan data center, an international airport, or a specialized industrial manufacturing line, our 20kV dry transformers provide "zero-leakage" peace of mind and industry-leading electrical performance.

• Superior 24kV Dielectric Strength: Specifically designed with enhanced insulation distances and vacuum-cast epoxy barriers to handle the increased electrical stress of 20kV/24kV systems.

• Low-Loss High-Efficiency Core: Utilizing the latest SCB13/SCB15 standards with high-permeability grain-oriented silicon steel. This design reduces no-load losses by up to 30% compared to legacy models, significantly lowering carbon footprints and operational costs.

• Maintenance-Free Cast Resin Design: The windings are hermetically sealed in resin, making them impervious to moisture, dust, and salt spray. This eliminates the need for oil testing, gasket replacements, or fire suppression systems.

• Smart Thermal Management: Equipped with an integrated PT100 temperature control system. When forced-air cooling (AF) is activated, the unit can sustain a continuous 40% overload without compromising the insulation life.

• Environmentally Safe (F-Class): Rated for Class F (155°C) or Class H (180°C) insulation. The materials are non-toxic, self-extinguishing, and fully recyclable at the end of the service life.

1. Urban Substations: Compact, fire-safe installation in underground basements or rooftop chambers of high-rise commercial towers.

2. Renewable Energy Collector Stations: Stepping down voltage from 20kV/24kV wind and solar collection grids for localized auxiliary systems.

3. Industrial Manufacturing: Clean, reliable power for precision electronics, automotive assembly lines, and chemical processing plants.

4. Critical Infrastructure: Providing stable power for hospitals, data centers, and metropolitan transit systems where downtime is not an option.

• Robust Short-Circuit Withstand: The fiberglass-reinforced resin structure provides immense mechanical strength, ensuring the coils remain intact during severe external grid faults.

• Low Partial Discharge: Our vacuum-casting process ensures partial discharge levels are kept below 10pC, preventing the internal "treeing" erosion that shortens the life of cheaper dry transformers.

• Low Noise Operation: Precision core assembly and vibration-damping supports allow for ultra-quiet operation, making them suitable for installation near residential or office areas.

• Custom Enclosure Options: We offer specialized IP23 or IP31 protective enclosures with safety interlocks, designed to protect the unit while allowing for optimal airflow.

Q: Can this 20kV unit be used on a 24kV grid?

A: Yes. Our 20kV series is built on a 24kV insulation platform, ensuring it meets the Basic Insulation Level (BIL) requirements for both 20kV and 24kV utility standards globally.

Q: Is it safe to install this near people?

A: Absolutely. Our transformers are tested to E2 (Environmental), C2 (Climatic), and F1 (Fire behavior) classes, the highest ratings for safety in occupied buildings.

Q: What is the typical lead time for a 1600kVA unit?

A: Depending on current production loads and custom requirements (such as specific enclosures or tap ranges), standard delivery is typically 4 to 6 weeks.

Dry type epoxy casting transtormer(SCB10, SCB11, SCB13-20KV)

◆The high-voltage winding is made of enamelled copper wire, and the low-voltage winding is made of copper foil. The high voltage winding is filled with glass fiber felt and poured by imported epoxy resin without filler in vacuum state. After curing, it forms a solid whole with high mechanical strength, less partial discharge and high reliability.

◆Flame retardant, explosion-proof,non-polluting, environmental friendly, can be installed in the load center.

◆The coil does not absorb moisture,the iron core, the clamp after special processing can be in 100% relative humidity and other harsh environment operation.Discontinuous operation without tide treatment.
◆ Short circuit resistance,high lightning impact level,strong overload capacity.
◆Thin resin insulation layer inside and outside the coil,good heat dissipation performance.Air natural cooling (AN) is generally adopted for cooling.Air cooling system(AF)is available for any protective grade transformer. low loss,high power saving effect.Economical operation,maintenance-free.
◆Small volume,light weight,small space,easy installation.
◆ As a new generation product of dry type transformer,SC(B) dry type transformer is suitable for power supply in the following places; High-rise buildings, theaters, hospitals, industrial and mining enterprises, offshore oil drilling platforms, ships, subways,stations,airports,power plants,residential communities and high-rise buildings;