Description
Custom-Engineered Power Solutions for Industrial, Marine, Mining, and Mission-Critical Applications
📞 Call/WhatsApp: +254 707 122 122 | 🌐 shopstemaengineering.com
⚙️ Technical Specifications (Typical Ranges)
| Parameter | Value Range / Options |
|---|---|
| Voltage Class | Up to 1,200 kV |
| Rated Power Output | 100 kVA to over 1000 MVA |
| Cooling Methods | ONAN, ONAF, OFAF, OFWF, AN, ANAF, AFWF |
| Insulation Class | Class A, B, F, H (based on application) |
| Frequency | 16.7 Hz to 500 Hz |
| Winding Material | Copper / Aluminium |
| Phase Configuration | Single-phase, Three-phase, Zigzag, Scott-T, V-connection |
| Special Features | On-load tap changers, rectifier duty, auto-transformer mode |
| Compliance Standards | IEC 60076, IEEE, ISO, ANSI, Lloyd’s, DNV-GL, ABS |
🧩 Types of ABB Special Transformers
| Type | Application Area |
|---|---|
| Arc Furnace Transformers | Steel plants, high-current arc furnaces |
| Rectifier Transformers | Electrolysis, mining, industrial DC processes |
| Shore-to-Ship Transformers | Ports, marine grid interface |
| Mobile Substation Transformers | Emergency or remote power supply |
| Test Transformers | High-voltage labs, grid equipment testing |
| Generator Step-Up Transformers | Power plants, thermal & renewable generation |
| Earthing/Zigzag Transformers | Fault current limitation, grounding |
| Converter Duty Transformers | HVDC & traction systems |
🔍 Key Features & Advantages
⚙️ Customization & Flexibility
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Tailored for frequency, voltage, power, insulation, cooling, and protection systems
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Can operate in aggressive environments (e.g., salt air, heavy dust, high vibration)
⚡ High Thermal & Electrical Reliability
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Designed for continuous overload, short-circuit resistance, and voltage fluctuation tolerance
🛠️ Rugged Construction
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Reinforced core and winding insulation to handle harmonics, high inrush currents, and thermal cycling
🔒 Industry-Specific Certifications
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Marine (ABS, DNV-GL), Explosion-Proof (ATEX zones), Traction-compliant (IEC 60310), etc.
📈 Long Service Life
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Service life of 25+ years, often with minimal maintenance when correctly installed
📊 Comparison Table: ABB Special Transformers vs Standard Transformers
| Feature | ABB Special Transformers | Standard Distribution Transformers |
|---|---|---|
| Custom Voltage/Frequency | ✅ Yes | ❌ No |
| Application-Specific Design | ✅ Yes | ❌ General-purpose |
| Cooling Options | Wide (ONAF, OFWF, etc.) | Limited (ONAN/ONAF) |
| Harmonic Handling | ✅ High resilience | ❌ Limited |
| Special Connections | ✅ Zigzag, Scott-T, autotrans. | ❌ Not supported |
| Environment Resistance | ✅ Harsh conditions capable | ❌ Standard only |
| Certifications | ✅ Industry-specific | ❌ Basic IEC |
🏗️ Use Cases & Applications
| Industry | Typical Use Case |
|---|---|
| Metals & Mining | Furnace and rectifier transformers for smelters |
| Marine & Offshore | Shore-to-ship, marine propulsion, and drilling platforms |
| Utilities | Mobile substations for disaster recovery |
| Rail & HVDC | Converter duty transformers in substations |
| Testing Facilities | High-voltage and impulse test systems |
| Renewables | GSU transformers in wind/solar plants |
🔧 Services from Shop Stema Engineering
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🔍 Application assessment and transformer sizing
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✍️ Custom specification development
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🛠️ Delivery, commissioning, and protection coordination
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🧪 Routine testing, oil sampling, and condition monitoring
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🔄 Upgrades and retrofitting older transformers
📞 Request Your Custom ABB Special Transformer Today
Whether you’re powering an offshore platform, an electric arc furnace, or a grid-connected test lab, ABB Special Transformers provide robust, efficient, and tailor-made solutions you can trust.
📞 Call/WhatsApp: +254 707 122 122
📧 Email: info@stemaengineering.com
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