Explosion-Proof Transformers (Ex d)
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- Explosion-Proof Transformers (Ex d)
Flameproof Power Solutions for Zone 1 and Zone 2 Hazardous Areas
Explosion-Proof (Ex d) transformers are designed to prevent internal explosions from propagating to the surrounding hazardous atmosphere.
This protection concept ensures safe operation in Zone 1 and Zone 2 environments where explosive gases may be present.
ESTA Ex d transformers are engineered with flameproof enclosures, controlled surface temperatures, and certification-compliant mechanical design.
Protection Concept: Ex d
The Ex d (Flameproof Enclosure) principle:
- Contains any internal explosion within the enclosure
- Withstands explosion pressure
- Utilizes certified flamepath joints and flanges
- Controls external surface temperature
This design provides maximum protection against ignition risks.
Electrical Scope
Power Range
50 kVA – 10 MVA
Voltage Level
400 V – 36 kV
Power Range
50 kVA – 10 MVA
Voltage Level
400 V – 36 kV
On-load or off-load tap changer options
Fully engineered-to-order solutions.
Operational Advantages
Designed for Zone 1 and Zone 2
High explosion containment strength
Certified manufacturing
Long service life
Suitable for offshore and heavy industry
Applications
Oil & gas production facilities
Refineries
Chemical plants
Offshore platforms
Tank farms
Gas processing units
Design Features
Flameproof Enclosure
- Explosion pressure-resistant steel housing
- Certified flamepath tolerances
- Sealed cable entry systems
Surface Temperature Control
- Designed according to T-class requirements
- Verified through thermal analysis
Mechanical Strength
- Heavy-duty construction
- Corrosion protection system (C5-M optional)
- Offshore-grade coating available
Engineering Capability
- Explosion pressure calculations
- Surface temperature analysis
- Gas group evaluation
- Zone compliance engineering
- Certification documentation support
Each transformer is engineered according to the specific hazardous environment requirements.
Certification & Standards
- ATEX 2014/34/EU
- IECEx
- EN 60079-0
- EN 60079-1
- IEC 60076
Products are certified according to gas group (IIA / IIB / IIC) and temperature class requirements.