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ABB Power Transformers | 33 kV – 1200 kV | 10 MVA – 1200+ MVA
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🔍 Product Summary
ABB Power Transformers are engineered for high-voltage transmission and substation applications, delivering unmatched reliability, performance, and digital intelligence. Spanning 33 kV to 1200 kV voltage classes and 10 MVA to over 1200 MVA power ratings, they serve as the foundation of national power grids, power generation facilities, and interconnection substations.
Built for Ultra High Voltage (UHV) networks, these transformers feature modular cooling, smart monitoring, and low loss cores to optimize efficiency and operational lifespan under continuous grid stress.
Description
Grid-Scale Reliability | 33 kV – 1200 kV | 10 MVA – 1200+ MVA
📞 Contact: +254 707 122 122 | 🌐 shopstemaengineering.com
📐 ABB Power Transformer Technical Specifications
| Parameter | Details |
|---|---|
| Primary Voltage | 33 kV – 1200 kV |
| Secondary Voltage | Up to 765 kV |
| Power Rating | 10 MVA – 1200+ MVA |
| Cooling Types | ONAN, ONAF, OFAF, OFWF, ODWF |
| Core Construction | Step-lap, Cold Rolled Grain Oriented (CRGO) |
| Tap Changer | On-Load Tap Changer (OLTC) / Off-Load |
| Insulation Fluids | Mineral Oil, Natural Ester, Silicone Oil |
| Phase Configuration | 3-Phase or Single-Phase (custom) |
| Frequency | 50 / 60 Hz |
| Efficiency | >99.5% (EcoDesign Compliant) |
| Digital Monitoring | ABB TXpert™ Enabled |
| Standards | IEC 60076, IEEE, ANSI, GOST, GB |
🌟 Product Highlights
✅ Built for Grid-Scale Operation
Capable of operating continuously at high loads and voltage stresses, including harsh climate zones and fault scenarios.
🌐 ABB TXpert™ Ecosystem
Intelligent sensors embedded for:
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Temperature
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Load current
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Bushing condition
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Dissolved gas analysis (DGA)
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Remote diagnostics
⚙️ Low Loss, High Reliability
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Step-lap core to minimize no-load losses
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High-grade copper windings
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Advanced drying and oil treatment methods ensure long insulation life
🛡️ Full Protection Suite
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Buchholz relay
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Oil temperature & winding temp indicators
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Surge arresters
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Pressure relief devices
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On-load tap changer monitoring
🏭 Applications of ABB Power Transformers
| Sector | Use Case |
|---|---|
| Utilities | Transmission & distribution substations |
| Generation Plants | Generator Step-Up Transformers (GSU) |
| Renewables | Grid integration of wind and solar farms |
| Industrial Loads | Steel mills, mining, petrochemical complexes |
| HVDC Systems | Converter transformer interface |
| UHV Networks | 800 kV / 1200 kV interconnect substations |
🆚 Comparison Table: ABB Distribution vs Power Transformers
| Attribute | ABB Distribution Transformers | ABB Power Transformers |
|---|---|---|
| Voltage Range | Up to 36 kV | 33 kV – 1200 kV |
| Power Rating | 50 kVA – 10 MVA | 10 MVA – 1200+ MVA |
| Application | Local distribution / utility LV | National grid / bulk transmission |
| Tap Changer | Often Off-load | Mostly On-load (OLTC) |
| Digital Monitoring | Optional | Standard with TXpert™ |
| Installation | Pad-mounted or pole-mounted | Substation, skid-mounted |
🧰 Engineering & Configurable Options
| Component | Options Available |
|---|---|
| Core Type | Shell, Core-form (Step-lap laminated) |
| Tank Construction | Bell-type, welded, bolted |
| Bushings | Porcelain / Composite / SF₆ GIS-ready |
| Cooling | Radiators, Oil Pumps, Air/Water Heat Exchangers |
| Protection Devices | PRD, MOG, Buchholz, OTI, WTI, DGA |
| SCADA Integration | Modbus, IEC 61850, DNP3 compatible |
🔧 Typical Configurations
| Model | Power (MVA) | Voltage (kV) | Application |
|---|---|---|---|
| ABB TX GS400 | 250 MVA | 400/33 kV | GSU for thermal power plant |
| ABB TX Grid 765 | 500 MVA | 765/400/220 kV | National transmission grid |
| ABB TX Renew 220 | 120 MVA | 220/33 kV | Solar/wind farm interconnection |
| ABB TX Heavy 132/11 | 60 MVA | 132/11 kV | Heavy industrial facility |
✅ Certifications & Quality
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✔️ IEC 60076, ANSI C57, GOST-R Certified
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✔️ Factory Acceptance Tested (FAT) with full diagnostics
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✔️ ABB ISO 9001, ISO 14001, OHSAS 18001 factories
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✔️ Designed for 40+ years operational life
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✔️ EcoDesign Tier 2 compliance for energy savings
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✔️ KETRACO / KPLC / REA approved where required
🔧 Services from Shop Stema Engineering
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🧮 Transformer sizing, load-flow studies, and substation design
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🏗️ Logistics, crane delivery, and skid/platform mounting
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🧰 Installation, commissioning, and oil handling services
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🔍 DGA testing, SFRA, and thermographic inspections
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🔄 OLTC repair and spare part supply
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🧾 Technical documentation and tender support
📞 Request a Quote or Technical Consultation
Looking for ABB high-voltage power transformers for your grid, plant, or renewable project?
📞 Call/WhatsApp: +254 707 122 122
📧 Email: info@stemaengineering.com
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