Due to advantages such as strong short-circuit resistance, minimal maintenance requirements, high operating efficiency, compact size, and low noise levels, dry-type transformers are frequently used in locations with strict fire and explosion safety requirements.
1. Safe, fire-resistant, and pollution-free; capable of operating directly at the load center.
2. Utilizes advanced domestic technology; features high mechanical strength, strong short-circuit resistance, low partial discharge, excellent thermal stability, high reliability, and a long service life.
3. Low loss and low noise; offers significant energy-saving benefits and is maintenance-free.
4. Excellent heat dissipation and strong overload capacity; capacity can be increased during operation with forced air cooling.
5. Good moisture resistance; suitable for operation in high-humidity and other harsh environments.
6. Can be equipped with a comprehensive temperature monitoring and protection system. Uses an intelligent signal-based temperature control system to automatically monitor and cyclically display the operating temperatures of the three-phase windings; features automatic fan control (start/stop) as well as alarm and trip functions.
7. Compact size and light weight; requires minimal floor space and results in lower installation costs.
Core
Constructed from high-quality cold-rolled grain-oriented silicon steel sheets; the core utilizes a 45-degree fully mitered joint design, allowing magnetic flux to flow along the direction of the sheet joints.
Winding Types
(1) Wrapped/wound;
(2) Cast with epoxy resin and quartz sand filler;
(3) Cast with glass fiber-reinforced epoxy resin (thin insulation structure);
(4) Multi-strand glass filament winding impregnated with epoxy resin (Type 3 is commonly used as it effectively prevents resin cracking and enhances equipment reliability).
High-Voltage Winding
Typically employs a multi-layer cylindrical or multi-layer sectional structure.
