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