Dry-type transformers are commonly used in locations with high performance requirements, such as fire and explosion protection, due to their advantages including strong short-circuit withstand capability, low maintenance workload, high operating efficiency, small size, and low noise.
1. Safe, fireproof, and pollution-free; can operate directly at the load center.
2. Utilizes advanced domestic technology, boasting high mechanical strength, strong short-circuit withstand capability, low partial discharge, good thermal stability, high reliability, and long service life.
3. Low loss, low noise, significant energy-saving effect, and maintenance-free.
4. Good heat dissipation performance, strong overload capacity, and can increase capacity operation under forced air cooling.
5. Good moisture resistance, adaptable to operation in high humidity and other harsh environments.
6. Dry-type transformers can be equipped with a complete temperature detection and protection system. Employing an intelligent signal temperature control system, it can automatically detect and cyclically display the operating temperature of each of the three-phase windings, automatically start and stop the fan, and has alarm and trip functions.
7. Small size, light weight, small footprint, and low installation cost. Core: Made of high-quality cold-rolled grain-oriented silicon steel sheets. The silicon steel sheets in the core use a 45-degree fully oblique joint, allowing magnetic flux to pass along the joint direction of the silicon steel sheets.
Winding Types:
⑴ Winding;
⑵ Epoxy resin and quartz sand filling casting;
⑶ Glass fiber reinforced epoxy resin casting (i.e., thin insulation structure);
⑷ Multi-strand glass fiber impregnated epoxy resin winding (generally type 3 is more common because it effectively prevents cracking of the cast resin, improving equipment reliability).
High-voltage winding: Generally adopts a multi-layer cylindrical or multi-layer segmented structure.
