20kV 400kVA Dry Type Transformer | Cast Resin Distribution Transformer

65+ Years of Experience

20kV 400kVA Dry Type Transformer | Cast Resin Distribution Transformer

Ztelec Yuguang 20kV 400kVA dry-type transformer features robust, maintenance-free design, precise voltage control, and advanced safety. Ideal for industrial and commercial applications with air-cooled, oil-free operation and optional accessories for enhan

Rated voltage:20kV
Rated capacity:400kVA
Application scenarios:

Designed to modernize the 20 kV substation at the CHE Hydroelectric Power Plant, this 400 kVA dry-type transformer from Ztelec Yuguang exemplifies advanced electrical engineering. Its robust, maintenance-free construction ensures reliable operation without the need for protective casing, making it ideal for supplying 0.4 kV AC services in a 50 Hz environment. Operating oil-free, this air-cooled transformer offers precise voltage control, high safety, and long-term durability, making it suitable for demanding industrial and commercial applications.

Enhance the functionality and performance of your 20kV 400kVA Dry Type Transformer with Ztelec Yuguang's comprehensive range of precision-engineered accessories, each designed to optimize operation, ensure safety, and enable seamless integration into your power distribution system.

Bidirectional Trolley: Features dual-directional wheels and a locking mechanism, ensuring smooth mobility and secure positioning during installation and maintenance.

Temperature Sensors: Equipped with multiple PT100 sensors, the transformer continuously monitors winding temperatures, providing real-time data to prevent overheating and maintain operational integrity.

Integrated Temperature Control Unit: Seamlessly integrated into the transformer's protection, signaling, and monitoring system, this unit allows precise temperature regulation and enhances overall system reliability.

Lifting Lugs: Strategically positioned lifting lugs simplify handling and transportation, ensuring safe and efficient movement during setup and servicing.

Neutral Terminal: An accessible neutral terminal on the low-voltage side allows for easy grounding, enhancing system safety during operation.

Product Specifications

Product Specifications
Rated Voltage	Primary 20 kV / Secondary 0.4 kV
Transformer Capacity	400 KVA
Phase Configuration	3-phase
Standards	EN 60076 CEI 60076 IEC 60185 DIN-VDE 0414-1
Cooling System	Employs natural air convection to dissipate heat, eliminating the need for external cooling systems and ensuring efficient thermal management.
Insulation System	Utilizes a blend of epoxy resin and quartz powder, providing superior moisture resistance and fire safety, while ensuring maintenance-free operation.
Core Construction	Constructed from low-loss, cold-rolled silicon steel with high magnetic permeability, minimizing energy losses and enhancing overall efficiency.
Winding Design	Features copper windings with epoxy resin insulation, offering high mechanical strength to withstand short-circuit forces and ensuring long-term durability.
Insulation Class	Equipped with Class F insulation, capable of withstanding continuous operating temperatures up to 155°C.
Maximum Winding Temperature Rise	Maintains a maximum average winding temperature rise of 105°C above the ambient temperature during full-load operation.