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Dry-type transformer adopts air or solid insulating material as cooling and insulating medium, no need for transformer oil, has the advantages of fire prevention, environmental protection, maintenance-free, etc., suitable for high-rise buildings, subways, data centres, hospitals and other places with strict safety requirements.
And the dry-type transformer use air for cooling and solid insulation materials like epoxy or resin, eliminating the need for oil. They are safer, fire-resistant, and require minimal maintenance. These transformers are ideal for indoor environments, particularly in commercial, residential, and industrial applications, where space, safety, and environmental concerns are key. With no risk of oil leakage, they offer reliable and eco-friendly power distribution.
Key Features of Products :
Safe and Reliable
Oil-free fire protection: no risk of combustion and explosion, suitable for fire-sensitive areas (e.g. subways, shopping malls).
Strong short-circuit resistance: epoxy resin casting or VPI (Vacuum Pressure Impregnation) process to enhance mechanical strength.
Environmental protection and energy saving
Zero pollution: no risk of oil leakage, in line with RoHS environmental standards.
Low loss: Adopting high-quality silicon steel sheet or amorphous alloy, the no-load loss is 10%~30% lower than oil-immersed type.
Intelligent monitoring
Temperature control system: PT100 temperature sensor + fan automatic start and stop.
Remote monitoring: support RS485/MODBUS communication, real-time monitoring of operating status.
| Parameter | Typical Specification |
| Rated Capacity | 10kVA ~ 20MVA |
| Rated Voltage | LV side: 400V/690V; HV side: 6.6kV ~ 35kV |
| Insulation class | Class F (155ºC), Class H (180ºC) |
| Cooling method | AN (natural cooling), AF (forced air cooling) |
| Protection Grade | IP00 (no shell), IP20/IP23 (dust and splash water proof) |
| Efficiency | ≥98% (depending on load factor) |
| Noise level | 45~65dB (distance 1m) |
This product detail image showcases the design and components of a dry-type transformer. It highlights the air-cooling system, solid insulation, and compact structure, emphasizing safety, efficiency, and maintenance-free operation for indoor applications.
Chongqing Zexing Electric Equipment is a professional manufacturer specializing in the R&D, production, and sales of oil-immersed transformers, dry-type transformers, and related power distribution equipment. With advanced production technology and strict quality control, we provide reliable and energy-efficient solutions for power transmission and distribution systems.
Chongqing Zexing Electric Power Equipment operates a modern and well-equipped manufacturing facility, which spans a large area. The factory is designed to meet industry demands for high-quality electric power equipment, featuring advanced production lines and rigorous testing systems. With a focus on innovation and efficiency, the factory is equipped with state-of-the-art machinery and skilled workers to ensure the production of reliable and durable products. Zexing Electric Power Equipment's manufacturing process adheres to strict international standards, enabling the company to supply its customers with top-tier products and services.
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