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Explosion-Proof Mining Transformer for Underground Coal Mines Ex Certified

Our explosion-proof mining transformers are engineered specifically for underground safety in hazardous mining environments. These mining flameproof substations are designed for special and harsh environmental conditions with excellent explosion-proof performance and mechanical strength.

Safety & Performance Features

220°C insulation class for high-temperature operation
Flameproof Group IIB, Zone 1, Zone 2 certification
Fire-proof construction with non-toxic air creation
Low noise operation and environmentally protected design
Maintenance-free operation with heat shock resistance
Superior overload capacity and multiple protective functions
Protection against overload, short circuit, leakage, leakage lockout, over-voltage, under-voltage and over temperature

Mining operations involve high risks including methane exposure, coal dust, humidity, vibration and confined spaces. Our Explosion-proof Mine Transformers (Exd I / Exd I Mb) are engineered to ensure reliable and safe power distribution in these hazardous underground environments.

Key Features

Certified MA & Explosion-Proof (Ex) compliance
Explosion-proof enclosure with robust mechanical protection
Resistant to humidity, dust, corrosion and vibration
High reliability and low maintenance for continuous operation
Suitable for underground conveyors, pumps, lighting & ventilation systems
Compact structure for narrow mine shafts; mobile and fixed options available

Applications

Coal mines, underground tunnels, pump stations, mining conveyors, and underground power distribution systems.

Technical Specifications

Parameter	Specification
Transformer Type	Dry type
Rated Capacity	Up to 8000kVA
Rated Voltage	Up to 11kV
Frequency	50/60Hz
Phase	3 Phase
Winding Material	Copper / Aluminum
Insulation Class	H(180℃), C (220℃)
Vector Group	Dyn11, YNd1d1
Cooling	ANAN, GNAN
Protection Enclosure	IP00 to IP54
Explosion-proof Type	ExdIMb
Zone	Zone 1, Zone 2
Tank Painting	C4 and C5 on request
Altitude	Max 2300m
Standard	IEC, AS, EN, IEEE/ANSI, GOST

HV and LV Switch Configurations

Mining Flameproof HV vacuum switch + Mining Flameproof LV protection box
Mining Flameproof HV vacuum switch + Mining Flameproof LV feed switch
Mining Flameproof HV vacuum switch + Mining Flameproof LV multi-loop combined switch (LMCC)

Explosion-proof mining transformer technical diagram and internal components

Explosion-proof mining transformer installation in underground mining environment

Contact us for detailed drawings, certificates, and customized technical specifications.

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