SGB10 series the encapsulation H level dry type transformer adopt (Germany) MORA dry type transformer special technology, make products fully meet the fire waterproof and meet the requirements of environment protection. It is the ideal product distribution system, widely used in the subway, ships, mining, chemical, electric power enterprise and staff of dense buildings, etc. Various kinds of fire safety have special requirements occasion.
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SG(B)11~18 Un-Packaged H-Class Dry-Type Transformer
The SG(B)11~18 H-class dry-type transformer is an advanced, oil-free power distribution solution engineered with German MORA specialized dry-type transformer technology, delivering industry-leading fire safety, environmental compatibility, and reliable performance. With H-class (180°C) insulation and an encapsulated non-packaged design, this transformer fully meets strict fire protection, waterproof, and environmental requirements, making it the preferred choice for commercial building operators, critical infrastructure managers, industrial facility owners, and mission-critical power system operators.

Our fire-resistant H-class dry-type transformer features a fully oil-free design, with flame-retardant NOMEX insulation that withstands up to 180°C high temperatures, producing no toxic smoke even at 800°C combustion. Unlike oil-filled units, it eliminates explosion and oil leakage risks, and its materials are fully recyclable at the end of its service life, reducing environmental impact and compliance costs.
Engineered with a premium stepped 45° full-inclined silicon steel core, this energy-saving dry-type distribution transformer delivers up to 20% lower no-load loss than standard SC9 series models, with remarkable energy savings in continuous operation. Its maintenance-free epoxy-encapsulated construction eliminates the need for oil testing, leakage checks, and regular fluid replacement, cutting long-term maintenance costs and downtime.
With a unique ceramic insulation structure, IP45+ protection options, and 100% waterproof sealing, this transformer offers excellent moisture, dust, and corrosion resistance. It can withstand -50°C to 50°C operating temperatures, with 120% long-term overload capacity without forced air cooling, and exceptional short-circuit and shock resistance for rugged applications.
Parameter | Specification |
Model Series | SG(B)11~18 Un-Packaged H-Class Dry-Type Transformer |
Insulation Class | H-Class (180°C Rated) |
Winding Material | Copper |
Core Structure | Stepped 45° Full-Inclined Grain-Oriented Silicon Steel |
Protection Grade | Up to IP54 |
Noise Level | ≤55dB |
Overload Capacity | 120% Long-Term Operation Without Forced Air Cooling |
Coil Structure | Continuous Type with Vacuum Pressure Impregnation |
Compliance Standard | IEC 60076, GB 1094, NFPA Fire Safety Standards |
This H-grade encapsulated dry-type transformer is ideal for mission-critical and high-safety applications: high-rise commercial buildings (shopping malls, office towers, hotels), data centers and telecom base stations, chemical and heavy industrial manufacturing facilities, renewable energy wind and solar farms, rail transit and airport substations, hospitals and educational institutions, marine & offshore platforms, and underground mining & tunnel projects.
Our dry-type power transformer complies with IEC 60076, GB 1094, and NFPA fire safety standards, with VPI vacuum pressure impregnation process certification. Every unit undergoes rigorous partial discharge testing, temperature rise verification, and short-circuit withstand testing before delivery, ensuring zero defects and consistent reliable performance in critical applications.
Backed by over 30 years of dry-type transformer manufacturing expertise, YAWEI delivers a 99.5% on-time delivery rate, full custom engineering for extreme environments and specialized applications, 2-year extended warranty options, and flexible production cycles for fast project turnaround. Our transformers are deployed in 15+ Asian megacity projects and hundreds of industrial and commercial installations worldwide, with proven long-term trouble-free operation.
