Medium Voltage Supply Transformers
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Medium Voltage Supply Transformers are designed to provide reliable and efficient power transfer from utility grids to distribution systems in industrial, commercial, and critical infrastructure applications.
These transformers ensure stable voltage levels, high efficiency, and long-term operational reliability under continuous load conditions.
ESTA Medium Voltage Supply Transformers are engineered for flexible integration, robust performance, and compliance with international standards in a wide range of applications.
Electrical Scope
Power range
100 kVA – 20 MVA
Primary voltage
Up to 36 kV
Secondary voltage
400 V – 6.6 kV
Frequency
50 Hz / 60 Hz
Cooling Methods
ONAN / ONAF / AN
Tap Changer
Off-load tap changer (OLTC optional)
Fully engineered-to-order configurations available.
Applications
Industrial facilities
Commercial buildings
Data centers
Utility distribution systems
Infrastructure projects
Renewable energy plants
Design Features
High Mechanical Strength
- Designed for continuous and stable operation
- Reinforced structure for long service life
- High resistance to electrical and mechanical stress
Environmental Protection
- Indoor and outdoor installation compatibility
- C3 / C4 corrosion protection options
- Moisture and temperature resistant insulation systems
Electrical Performance
- Stable voltage output
- High efficiency and low losses
- Reliable insulation performance
- Designed for load variation tolerance
Engineering Capability
ESTA provides:
- Electromagnetic design calculations
- Thermal performance analysis
- Short-circuit strength evaluation
- Mechanical integrity verification
- Project-specific FAT procedures
Each transformer is engineered according to grid conditions and application requirements.
Operational Advantages
- Reliable power supply
- High efficiency
- Long service life
- Low maintenance requirements
- Flexible design options
- Suitable for a wide range of applications
Reliability for Critical Power Systems
Medium voltage supply transformers play a key role in maintaining reliable power distribution. ESTA designs focus on:
- Continuous duty operation
- Stable performance under load variations
- Long operational lifespan
- Reduced failure risk
- Optimized thermal performance
Standards & Compliance
- IEC 60076
- Utility and distribution standards
- Industrial application requirements
Why ESTA?
Reliable Power for Modern Distribution Systems
ESTA delivers engineered medium voltage transformer solutions designed for reliability, efficiency, and long-term performance in critical power distribution networks.