dry isolation transformer
1. Proven and reliable design: utilizing a classic construction obtained through the dry-type epoxy resin casting method, the product features stable technology, extensive market application, and rich operational experience.
2. Safety and fire resistance: It is fire-resistant, self-extinguishing, requires no oil, and can be directly installed in distribution panels, buildings, basements, and other locations.
3. Moisture and dust protection: The device can operate normally in humid and dusty environments and can be put into service immediately after shutdown without pre-drying.
4. Moderate losses and low noise: Thanks to a reasonable design, low partial discharge, stable operation, and ease of daily maintenance.
5. Environmental friendliness and no need for maintenance: no risk of oil leakage, no environmental pollution, virtually no maintenance required, and long service life.
Dry-type transformer manufactured by epoxy resin casting method.
1. Product Introduction
This product uses vacuum epoxy casting technology and foil winding, while traditional oil-immersed transformers use insulating oil as the main insulating material.
2. Technical specifications (customizable)
2.1 Main electrical parameters
Element |
Specification |
Notes |
Model |
Dry-type transformer |
Rated power: from 30 kVA to 2500 kVA; Voltage class: 10 kV/0.4 kV |
Phase |
Three-phase |
50 Hz |
Rated capacity |
50 kVA-8000 kVA |
Full standard range; non-standard options are also available. |
Rated voltage |
High voltage: 10 kV (±2×2.5%); low voltage: 0.4 kV |
Off-circuit tap adjustment for compensating voltage fluctuations in the network. |
Connection Group |
Dyn11 |
Standard fordistribution transformers; suppresses third harmonics. |
Tap Regulation |
Off-circuit tap changer |
Simple and reliable; adjustable when de-energized. |
3.1 Exceptional safety, eliminates fire risk
Windings are manufactured using vacuum casting with epoxy resin, forming a dense fire-resistant material.
Oil-free design ensures safe installation in basements, shopping malls, hospitals, and other locations with high fire safety requirements and large crowds.
3.2 Advanced technology, industry-leading short-circuit withstand capability.
Low-voltage foil winding offers exceptional mechanical strength and short-circuit resistance.
High-efficiency grain-oriented silicon steel with mitered joints reduces core losses and noise levels.
3.3 High environmental adaptability
Fully encapsulated windings are resistant to moisture, dust, salt spray, and condensation; no drying required after shutdown.
Corrosion-resistant coatings, stainless steel fasteners, and reinforced insulation are available for use in the chemical industry and coastal areas.
3.4 Excellent value for money
Established mass production ensures a competitive initial cost.
The oil-free and maintenance-free design eliminates the need for oil changes, inspections, and servicing.
4. Applications
High-rise residential buildings, shopping malls, hotels, office buildings, hospitals, schools, and nursing homes.
Electronics, food industry, textile industry, machinery manufacturing, mining, cement, and chemical industry (corrosion-resistant version).
Subways, railways, airports, stadiums, libraries, urban lighting, and sewage treatment plants.
Urban and rural power grid renovation, integration of photovoltaic and wind energy, and auxiliary systems for power plants.
