Explosion-Proof Mining Transformer for Underground Coal Mines Ex Certified

Explosion-Proof Mining Transformer – Engineered for Underground Safety

• Mining flameproof substation used for Special & harsh environmental
• Mining substation with Excellent explosion-proof performance and mechanical strength
• 220 ℃ insulation class
• Flameproof Group IIB, Zone 1, Zone 2
• Fire-proof, nonpoisonous air created, low noise, environmental protected
• Mainentance-free
• withstand heat shock ability, over load capacity
• Multiple protective functions of overload, short circuit, leakage, leakage lockout, over-voltage, under-voltage and over temperature

Mining operations involve high risks: methane, coal dust, humidity, vibration and confined space. Our Explosion-proof Mine Transformers (Exd I / Exd I Mb) are designed to ensure reliable and safe power distribution in 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.

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

Main Specification

HV and LV switches have three configuration options:

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

Our HENTG POWER is a leading transformer manufacturer in China with over 15 years of industry experience, specializing in reliable MV and HV transformer solutions for global power systems since 2011.

With a 100,000 m² manufacturing facility, over 250 skilled workers, 30+ senior engineers, and 10+ professional testing engineers, HENTG POWER is dedicated to delivering high-quality transformer solutions to over 300 customers across 45+ countries, supporting large-scale EPC and utility projects worldwide.

We provide a comprehensive product portfolio, including medium and high voltage transformers, dry-type transformers, oil-immersed transformers, substations, switchgear, and distribution boxes. All products are designed and manufactured in compliance with GB 20052-2024, IEC 60076, and IEEE standards, meeting the technical requirements of power utilities, EPC contractors, and energy solution providers.

HENTG POWER transformers are widely applied across urban and rural distribution networks, industrial and heavy manufacturing facilities, power substations, renewable energy systems, battery energy storage systems (BESS), and data centers, delivering stable and efficient power for critical infrastructure projects.

Guided by our mission — “Transform Energy, Connect the Future.” — HENTG POWER implements strict 5S factory management throughout the entire manufacturing process. Every transformer undergoes 100% Outgoing Quality Control (OQC) with eight comprehensive testing procedures, ensuring long-term reliability, safety, and performance under demanding operating conditions.

Trusted by clients in 45+ countries, HENTG POWER is committed to providing responsive technical support and engineered transformer solutions.

Contact us today for professional engineering assistance and a free quotation.

Our factory has a complete quality control system. We own authorized sets of analyzing instruments with high efficiency and highsensitivity Everyone at HENTG Power strives to meet or exceed the expectations of customers, and aims to constantly improve both qualtly andservice of our product, to achieve much higher level on diferent aspects of company in the long run.

The certification systems are:

• CE Certification (EU Conformity Mark)
• Environmental Management System Certification (ISO 14001)

Our engineer team provide 24 hours instant technical support, and our Overseas after-sales engineers provide on-site installation and debugging services.