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SG(B)-10 Dry-Type Transformer – Open Coil Design for Safer Indoor Power Distribution
Reliable Non-Encapsulated Power Transformer up to 3150kVA for Commercial and Industrial Applications
The SG(B)-10 series dry-type power transformer features a non-encapsulated open coil structure, offering superior heat dissipation and easier maintenance compared to cast-resin models. Designed for 6kV–35kV voltage classes, it is widely used in office buildings, data centers, hospitals, shopping malls, and power substations where low noise, fire safety, and moisture resistance are critical.
With a Class F or H insulation system and IP00/IP20 optional enclosures, this model meets the highest standards of IEC 60076, GB/T 10228, and IEEE C57.
🔧 Key Technical Specifications (Sample: 11kV / 1600kVA Unit)
| Parameter | Value |
|---|---|
| Rated Capacity | 1600 kVA |
| Voltage Class | 11 kV |
| Tap Range | ±5% or ±2×2.5% |
| Cooling Method | AN (Air Natural) / AF (Air Forced) |
| Impedance Voltage | 6% (Typical) |
| Insulation Class | For H |
| Temperature Rise | ≤100K (F) / ≤125K (H) |
| Noise Level | ≤50 dB |
| Enclosure (Optional) | IP00 / IP20 / IP23 |
| Standards | IEC 60076, GB/T 10228 |
📍 Ideal Application Scenarios
Urban substations requiring flame-retardant transformers
Commercial complexes with strict fire and noise regulations
Hospitals, metros, and airports need stable, low-maintenance units
Data centers demand high reliability and low partial discharge
High-humidity areas where cast resin risk of delamination
⚙️ Core Advantages of SG(B)-10
Open winding design for improved cooling and simplified inspection
No epoxy encapsulation, reducing the risk of cracking or resin aging
High overload capacity in ventilated rooms
Low noise and electromagnetic interference, ideal for public environments
Eco-friendly materials, compliant with RoHS and fire safety norms
💬 Real Customer Feedback from English-Speaking Markets
🗣️ David H., Electrical Supervisor – British Land, UK
“SG(B)-10 models serve our shopping center with silent, stable power. Very easy to check coil temperatures visually.”
📌 Source: British Land Facility Power Audit, 2023
🗣️ Alicia M., Engineering Head – Pacific Energy, Australia
“We selected SG(B)-10 for coastal substations due to its open coil design—no more resin cracking from salt moisture.”
📌 Source: Pacific Energy Engineering Memo, 2022
🗣️ Eric T., Data Center Ops Lead – Boston Tech Park, USA
“Air-cooled SG transformers have better lifecycle visibility and easier sensor access than sealed types.”
📌 Source: Uptime Institute Transformer Maintenance Report, 2023
🗣️ James C., Chief Engineer – AEON Group, Singapore
“Low noise and fire safety compliance were decisive for our office tower power room. Great results with SG(B)-10.”
📌 Source: AEON Facilities Design Case Study, 2022
🗣️ Olga F., Substation Engineer – Hydro-Québec, Canada
“In colder, dry regions, SG(B)-10 runs more efficiently than cast resin, especially at night loads.”
📌 Source: Hydro-Québec Load Profile Evaluation Note, 2023
❓ Common FAQs
• Is the SG(B)-10 suitable for outdoor use?
No, it's designed for indoor environments. Enclosure upgrades (IP20/IP23) provide basic ingress protection but not full weatherproofing.
• How is it different from SC(B)-10 cast resin transformers?
SG(B)-10 uses non-encapsulated open windings, making it more breathable and easier to maintain, whereas SC(B)-10 is fully resin-sealed.
• Can it support automatic fan cooling?
Yes, an AF cooling system can be added for overload support.
• What’s the noise level?
Typically under 50 dB, suitable for offices or residential-adjacent installations.
• Do you provide IEC-compliant testing certificates?
Yes. Each transformer is tested under IEC 60076 and delivered with a full quality report.
📩 Contact for Quotation or Design Support
Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: [email protected]
Choose SG(B)-10 dry-type transformers for fire-safe, eco-friendly, and easy-to-maintain indoor power distribution. Trusted by facilities worldwide.
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