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Reliable Power Supply Solutions for Auxiliary Systems in Power Plants
Auxiliary power transformers provide critical power supply to internal systems of power plants, ensuring reliable operation of pumps, cooling systems, control units, and protection systems.
ESTA Transformer delivers engineered-to-order auxiliary transformers designed for continuous-duty operation, high reliability, and seamless integration within power generation facilities.
Application Areas
Thermal power plants
Hydroelectric power plants
Gas turbine and combined cycle plants
Renewable power plant auxiliary systems
Substation auxiliary supply systems
Industrial power generation facilities
Design Features
Electrical Performance
- Designed for continuous-duty operation
- Stable voltage regulation under varying load conditions
- High efficiency and low-loss design
- High short-circuit withstand capability
Mechanical Design
- Robust construction for industrial environments
- Flexible installation configurations
- Compact and optimized footprint
Thermal Management
- Advanced cooling systems (ONAN / ONAF / AN / AF)
- Stable performance under continuous and cyclic loading
- Emergency overload capability
System Integration
- Compatible with generator and grid supply systems
- Flexible earthing configurations (TN / IT / TT)
- Integration with protection and control systems
- Tap changer options (off-load / on-load where required)
Product Groups
+90 534 988 92 82
Engineering Capability
ESTA provides:
- Auxiliary transformer system design (UAT / SAT configurations)
- Load flow and system integration analysis
- Thermal and short-circuit calculations
- Protection coordination support
- Grid and generator interface studies
- Project-specific FAT and validation procedures
Each transformer is engineered according to the specific operational requirements of the power plant.
Operational Advantages
- Reliable supply for critical auxiliary systems
- High efficiency and reduced operational losses
- Flexible design for various plant configurations
- Long-term operational stability
- Easy integration into existing systems
Operational Reliability
- Continuous and stable operation under base load conditions
- High availability for critical plant systems
- Reliable performance under fault and transient conditions
- Long insulation life under thermal stress
- Minimal maintenance requirements
Standards & Compliance
Designed and manufactured in accordance with:
- IEC 60076 – Power transformers
- IEC 60034 – Rotating electrical machines (generator interface)
- Utility and EPC specifications
- Project-specific international standards
Certification & Compliance
- Design aligned with ATEX and IECEx requirements
- Project-specific zone and temperature class validation
- Full compliance with customer and EPC technical specifications
- Traceable documentation and controlled manufacturing processes
Testing & Quality Assurance
- Routine electrical tests
- Thermal performance verification
- Surface temperature assessment
- Project-specific additional tests
Related Engineering Capabilities
Hazardous area projects are supported by ESTA’s in-house capabilities:
- Transformer Design & Engineering
- Winding & Magnetic Systems Manufacturing
- Core Manufacturing & Assembly
- Testing & Validation
All project-specific and special tests are performed at independent, internationally accredited testing laboratories.
All transformers are delivered with detailed test reports, technical files, and full traceability documentation.
Why Esta?
Optimized for continuous operation and critical power supply, ESTA transformers deliver stable and reliable performance in power plant auxiliary systems.