10kV SCB10 (11, 12, 13) Series Dry-Type Transformers

Product Introduction

This series of epoxy resin cast dry-type transformers features high-quality materials and a scientifically formulated composition, manufactured with precision using advanced production and testing equipment. The products are renowned for their exceptional reliability and long service life. Depending on the specific application environment, they can be equipped with enclosures offering varying levels of protection—or even delivered without an enclosure altogether. These transformers are ideally suited for critical or specialized settings, including high-rise buildings, commercial centers, airports, tunnels, chemical plants, nuclear power stations, and marine vessels.

Implementation Standards

1EC60076-11:2004 Dry-Type Power Transformers

GB1094.1-2013 Power Transformers

GB1094.11-2007 Dry-Type Power Transformers 
GB/T 10228-2015: Technical Parameters and Requirements for Oil-Immersed Power Transformers

JB/T10088-2016 Sound Level of Power Transformers Rated 6kV to 500kV

Model and Meaning

Performance Features

Safe, fireproof, pollution-free, and capable of operating directly at the load center.

Utilizing Swiss T+M technology, it boasts high mechanical strength, excellent short-circuit resistance, minimal partial discharge, superior thermal stability, enhanced reliability, and an extended service life.

Low loss, low noise, with significant energy-saving performance and maintenance-free operation.

It features excellent heat dissipation performance, strong overload capacity, and can operate at higher capacities when forced-air cooling is applied.

Offers excellent moisture resistance, making it suitable for operation in high-humidity and other harsh environments.

It can be equipped with a comprehensive temperature monitoring and protection system. Featuring an intelligent signal-based temperature control system, it automatically monitors and cyclically displays the operating temperature of each of the three-phase windings. Additionally, it can automatically start and stop fans, while also offering built-in features such as alarms and trip functions.

Small in size, lightweight, requires minimal floor space, and comes with low installation costs.

Structural Features

The high-voltage winding conductors are made from oxygen-free copper foil with high electrical conductivity, while inter-turn insulation is provided by Class F insulating material. Both the inner and outer portions of the winding are supported by imported glass mesh boards acting as a structural framework. The copper foil, along with its inter-turn insulation, is precisely programmed in one operation on a high-voltage foil-winding machine—controlled by a microcomputer and featuring laser-based positioning. The lead wires are then automatically welded using arc welding, and the winding is assembled in segmented sections before being placed into a mold. Finally, the assembly is cast under vacuum conditions using resin infused with filler material to achieve the final shape.

The low-voltage winding is made by winding copper foil—whose height matches that of the low-voltage winding—along with F-class turn insulation on a low-voltage foil-winding machine. During the winding process, the winding leads are automatically welded using argon arc welding to copper busbars before being brought out. To ensure proper cooling, spacer strips are inserted into the middle of the winding to create air channels, while the ends are sealed with resin and allowed to cure, forming a solid structure. 
The iron core is made from high-quality grain-oriented cold-rolled silicon steel sheets, featuring 45-degree fully sloped joints and a yoke structure without perforations—ensuring minimal no-load losses. For clamping the core, we employ a domestically pioneering prestressed, breathable square-steel clamp design. The core columns are securely bound with insulating tape, while the upper and lower clamping plates utilize an internal tension-plate configuration. Additionally, the core surface undergoes a specialized resin-sealing process, enhancing both structural strength and clamping force—while significantly reducing noise levels.

Technical specifications and external dimensions