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Dry-Type Transformers (Up to 36 kV, 50 kVA – 10,000 kVA)
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🔍 Product Overview
Dry-Type Transformers offer a safe, low-maintenance, and environmentally friendly alternative to oil-filled transformers. Designed to operate without liquid coolant, they are ideal for indoor, urban, industrial, and environmentally sensitive environments. With power ratings from 50 kVA to 10,000 kVA and primary voltage up to 36 kV, they’re built to deliver consistent, low-loss electrical power in a compact and robust form.
These transformers are commonly used in commercial buildings, hospitals, data centers, offshore platforms, tunnels, and other locations where fire risk mitigation, air quality, and compact design are critical.
Description
Safe, Reliable & Eco-Friendly | Up to 36 kV | 50 – 10,000 kVA
📞 Call Us: +254 707 122 122 | 🛒 Order Now at: shopstemaengineering.com
📐 Technical Specifications
| Parameter | Value / Description |
|---|---|
| Power Rating | 50 – 10,000 kVA |
| Primary Voltage | Up to 36 kV |
| Secondary Voltage | Typically 400V / 415V / Custom |
| Frequency | 50 Hz / 60 Hz |
| Cooling Type | AN (Air Natural) / AF (Air Forced) |
| Insulation Class | Class F / H / VPI / Cast Resin |
| Winding Material | Copper or Aluminum |
| Protection Degree | IP00 (standard), IP21, IP23, up to IP54 (optional enclosures) |
| Temperature Rise | 80°C, 115°C or 150°C options |
| Standards | IEC 60076-11, ANSI, UL 1562, ISO 9001/14001/45001 |
🌟 Key Features
🔥 Fire-Safe Design
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No flammable oil – ideal for indoor or high-risk environments
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Self-extinguishing insulation (Class F/H)
♻️ Eco-Friendly Operation
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No risk of oil leaks or contamination
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Low noise and vibration levels
💪 Rugged & Durable
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Excellent thermal shock resistance
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Operates reliably in dusty, humid, or corrosive environments
🛠 Low Maintenance
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No need for oil testing, containment basins, or filtering
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Long service life with reduced downtime
🏭 Applications
| Industry / Sector | Use Case |
|---|---|
| Commercial Buildings | Elevators, HVAC, lighting, UPS loads |
| Industrial Plants | Motors, production lines, automation systems |
| Hospitals & Data Centers | Clean power delivery, high reliability |
| Marine & Offshore | Enclosed dry-type transformers in confined spaces |
| Tunnels / Subways | Fire-resistant, low-maintenance power delivery |
| Renewable Energy | Integration with solar inverters and battery systems |
| Airports / Railways | Electrification systems, air traffic and rail operations |
🆚 Comparison Table: Dry-Type vs Oil-Filled Transformers
| Feature | Dry-Type | Oil-Filled |
|---|---|---|
| Cooling Medium | Air | Mineral or ester oil |
| Fire Hazard | 🔥 Very Low | ⚠️ Moderate to High |
| Environmental Impact | ✅ Clean (no spill risk) | ❌ Risk of leakage |
| Maintenance | ✅ Minimal | ⚠️ Requires oil testing |
| Installation | Indoors or outdoors | Typically outdoor only |
| Initial Cost | Slightly Higher | Lower |
| Life Expectancy | 20+ Years | 25+ Years |
| Preferred Use Cases | Hospitals, schools, malls | Utilities, substations |
⚙️ Configurable Options Available
| Option | Availability |
|---|---|
| Cast Resin Insulation | ✅ Yes |
| Vacuum Pressure Impregnation | ✅ Yes |
| Enclosed IP21/IP23 Cabinets | ✅ Yes |
| Temperature Sensors (PT100) | ✅ Optional |
| Smart Monitoring Systems | ✅ Optional |
| Forced Cooling Fans | ✅ Available for high-load |
| Anti-Vibration Mounts | ✅ Optional |
📦 Models & Availability
| Model Range | Power Rating | Primary Voltage | Application | Lead Time |
|---|---|---|---|---|
| Dry-Type CR Series | 100 – 2500 kVA | Up to 33 kV | Indoor commercial use | ✅ In Stock |
| Dry-Type H-Class VPI | 2500 – 5000 kVA | Up to 36 kV | Hospitals, Data Centers | 🔄 4 – 6 weeks |
| Cast Resin Enclosed | 500 – 3000 kVA | Up to 33 kV | Marine, mining, tunnels | 🔄 6 – 8 weeks |
| Custom Outdoor Units | 1000 – 10,000 kVA | Up to 36 kV | Renewables, Utilities | 🔄 8 – 12 weeks |
🔧 Why Buy from Shop Stema Engineering?
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🏭 Factory-Certified Schneider & ABB Distributor
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🛠 Custom Engineering to Suit Site Conditions
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🚛 Nationwide & East African Delivery
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⚙️ On-Site Installation, Testing & Commissioning
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👨🔧 Annual Maintenance & Emergency Support Plans
📄 Standards & Certifications
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✅ IEC 60076-11 (Dry-Type Transformers)
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✅ ISO 9001 – Quality Management
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✅ ISO 14001 – Environmental Management
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✅ ISO 45001 – Occupational Health & Safety
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✅ UL 1562 – Dry-Type Transformers (US Market)
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✅ Seismic Certified Options Available
📞 Contact Us for Quotes & Technical Specs
Looking for indoor-safe, low-maintenance, and high-efficiency power distribution? Choose Dry-Type Transformers for your next project.
📞 Call or WhatsApp: +254 707 122 122
📧 Email: info@stemaengineering.com
🌍 Website: shopstemaengineering.com
🛒 Submit an RFQ Today – Bulk Discounts Available!
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