Mining Transformers
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Flameproof Power Solutions for Underground Mining Environments
Electrical equipment used in underground coal mines operates in environments containing methane gas and coal dust, representing the highest explosion risk category.
Group I (M1 / M2) equipment is subject to stricter safety requirements than standard ATEX Group II equipment.
ESTA Mining Transformers are engineered specifically for underground mining applications, featuring explosion-resistant construction and full certification compliance.
What is ATEX Group I – M1 / M2?
Group I
Equipment designed for underground mining.
M1
Highest safety level; equipment must remain operational even in the presence of explosive atmosphere.
M2
Equipment must be de-energized when explosive atmosphere is detected.
Transformer design is determined according to mine site risk assessment.
Electrical Scope
Power Range
100 kVA – 10 MVA
Voltage Level
400 V – 36 kV
Frequency
50 / 60 Hz
Flameproof enclosure
Rail-mounted or fixed type options
Fully engineered-to-order solutions.
Applications
Underground coal mines
Mine gallery power distribution systems
Underground substations
Mining railway transport systems
Conveyor and equipment power supply
Design Features
Flameproof Housing
- Explosion pressure-resistant heavy steel enclosure
- Certified flamepath surfaces
- Impact and vibration resistance
Surface Temperature Control
- Designed according to T-class limits
- Verified through thermal testing
Heavy-Duty Construction
- Dust and moisture resistant
- Mechanically reinforced structure
- Corrosion protection system
Engineering Capability
- Explosion pressure analysis
- Mechanical strength calculations
- Thermal surface verification
- Mining site risk assessment
- Certification documentation support
Each transformer is custom-designed according to the technical requirements of the mining operation.
Certification & Standards
- ATEX 2014/34/EU - Group I
- IECEx
- EN 60079-0
- EN 60079-1
- IEC 60076
Certified according to M1 or M2 category.