Description
Reliable Power for Medium Voltage Networks | Up to 36 kV | 50 kVA – 10 MVA
📞 Call Us: +254 707 122 122 | 🌐 Buy Online at: shopstemaengineering.com
📐 Technical Specifications
| Feature | Details |
|---|---|
| Voltage Rating | Primary: Up to 36 kV Secondary: 400 V–11 kV |
| Power Rating | 50 kVA – 10,000 kVA (10 MVA) |
| Insulation Type | Mineral oil / Natural ester / Dry resin |
| Cooling Type | ONAN, ONAF (oil-filled) / AN (dry-type) |
| Phases | 3-phase standard (1-phase on request) |
| Tapping Range | ±2×2.5% or ±5% (Off-Circuit or OLTC) |
| Standards | IEC 60076 / IEEE / ANSI |
| Efficiency | Up to 99.5% |
| Temperature Rise | 55°C / 65°C (Custom available) |
| Enclosure Options | Indoor / Outdoor (IP23 – IP54) |
| Frequency | 50 Hz / 60 Hz |
🌟 Key Features
🔋 High Efficiency & Low Losses
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Energy-efficient core and windings reduce operating costs.
🌍 Eco-Friendly Options
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Natural ester insulation available for fire safety and environmental compliance.
📈 High Reliability
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Proven ABB design reduces failure rates and maximizes uptime.
🛡️ Safety & Compliance
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Integrated protection: Buchholz relay, pressure relief valves, temperature indicators.
🔧 Customizable Design
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Tap changers, bushings, tank types, and enclosures tailored to client requirements.
🏭 Ideal Use Cases
| Sector | Applications |
|---|---|
| Power Utilities | Rural & urban distribution substations |
| Commercial Buildings | Shopping malls, hospitals, and data centers |
| Industrial Plants | Medium-voltage process power |
| Renewable Energy | Solar and wind integration transformers |
| Real Estate & Estates | Large gated community electrification |
| Infrastructure Projects | Airports, railways, ports |
🆚 ABB Oil-Immersed vs Dry-Type Transformers
| Feature | Oil-Immersed | Dry-Type (Resin Cast) |
|---|---|---|
| Cooling Medium | Mineral Oil / Ester | Air / Epoxy Resin |
| Fire Risk | Requires containment | Self-extinguishing, safer indoors |
| Application Area | Outdoors / Substations | Indoors / Sensitive environments |
| Maintenance | Oil testing required | Low maintenance |
| Cost | Lower upfront cost | Slightly higher but safer indoors |
| Size & Weight | Heavier (due to tank, oil) | More compact |
⚙️ Customization Options
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Tap Changer Type: Off-load / On-load tap changer
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Insulation Fluid: Mineral oil / Envirotemp FR3 / Silicone
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HV & LV Bushings: Cable boxes, plug-in bushings, or air-insulated bushings
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Monitoring Options: Temperature gauges, DGA sensors, smart IoT modules
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Enclosures: Mild steel, stainless steel, galvanized – with optional IP ratings
📦 Sample Models & Lead Time
| Model | Power Rating | Voltage Class | Type | Lead Time |
|---|---|---|---|---|
| ABB Trihal 400/11kV | 500 kVA | 11/0.4 kV | Dry-Type | ✅ In Stock |
| ABB Oil-Immersed 36/0.4 kV | 1,600 kVA | 33/0.4 kV | Oil-Filled | 🔄 4–6 weeks |
| ABB 33/11 kV Substation TX | 5 MVA | 33/11 kV | Oil-Filled | 🔄 6–8 weeks |
| ABB Pole-Mounted TX | 100 kVA | 11/0.4 kV | Oil-Filled | ✅ Available |
✅ Compliance & Certifications
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✔️ IEC 60076-1 to 60076-14 compliant
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✔️ ISO 9001, ISO 14001, ISO 45001 certified
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✔️ KPLC / REA / KETRACO approved for utility integration
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✔️ EcoDesign 2021 EU Tier 2 efficiency optional
🔧 Installation & Services
At Shop Stema Engineering, we offer:
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📐 Transformer sizing and site survey
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🚚 Delivery and crane unloading
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🧰 Installation and commissioning by certified technicians
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🛡️ Maintenance contracts and spare parts
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📈 Load studies and power audits on request
📞 Get a Quote Now
Looking for dependable, efficient, and standards-compliant distribution transformers in Kenya or East Africa?
📞 Call / WhatsApp: +254 707 122 122
📧 Email: info@stemaengineering.com
🛒 Buy or Request a Quote at: www.shopstemaengineering.com
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