The HENTG POWER KBSG Series 6kV/0.4kV 100kVA Dry-Type Explosion-Proof Movable Mining Transformer Substation is a high-reliability power distribution solution engineered for underground coal mines, metal mines, tunneling projects, and hazardous industrial sites with explosive gas and conductive dust. Built with flameproof enclosures, resin-cast dry-type windings, and a rugged mobile structure, this substation guarantees stable, safe, and continuous power supply even under the harshest working conditions.

As mining operations increasingly demand mobility, environmental resilience, and high safety standards, the KBSG series provides a compact, energy-efficient, and maintenance-friendly alternative to traditional oil-immersed transformers and bulky fixed substations.

The KBSG series complies with Ex d I Mb explosion-proof standards, making it suitable for underground coal mines and areas containing methane gas and coal dust. Its robust flameproof shell prevents internal arcs or sparks from igniting flammable external atmospheres, ensuring personnel and equipment safety.

Key benefits include:

• Flamepath precision machined to ensure explosion isolation
• Thick steel enclosure, shockproof and impact-resistant
• Safe operation in gas-rich areas, confined tunnels, and deep mines

Unlike oil-filled transformers, the dry-type design requires no insulating oil, eliminating risks of leakage, fire hazards, and contamination. The winding is cast with high-strength epoxy resin, offering:

• Excellent moisture resistance (up to 95% RH)
• High thermal stability (Class F/H insulation)
• Anti-dust and anti-condensation performance
• Minimal maintenance and long service life

This makes the unit ideal for humid mines, underground water seepage areas, and environments with high salt corrosion.

Mining operations change locations frequently as excavation progresses. The KBSG series is designed with mobility in mind:

• Skid-mounted, rail-mounted, or wheel-mounted options
• Easy relocation with mining locomotives, trailers, or cranes
• Reduced downtime and faster power restoration when workface shifts

This mobility dramatically improves operational efficiency and reduces the need for multiple fixed installations.

Mining equipment often creates sudden load fluctuations and high starting currents. The KBSG transformer is designed to handle heavy-duty demands:

• Strong short-circuit resistance
• Low partial discharge
• Optimized air-cooling design to control temperature rise
• Stable output for crushers, conveyors, pumps, drilling rigs, and fans

Its strong load adaptability ensures continuous, trouble-free operation.

Every KBSG unit is engineered to operate reliably in extreme underground conditions such as:

• High dust concentration
• High humidity and dripping water
• Corrosive gases
• Continuous vibration
• Restricted installation spaces

The enclosure is treated with industrial-grade anti-corrosion coatings, with optional C3/C4/C5 protection for long-term durability.

All parameters can be customized according to specific mine requirements.

This explosion-proof mobile transformer substation is widely used in:

Power supply for conveying systems, pumps, shearers, roadheaders, and lighting.

Stable power for hoisting, crushing, drilling, and processing equipment.

Ideal for portable power distribution along the advancing tunnel face.

Any area requiring explosion-proof, movable, dry-type power equipment.

No. The KBSG series uses a fully sealed dry-type resin cast insulation system, which provides:

• Strong moisture resistance (operating humidity up to 95% RH)
• Dust-proof, water-proof, and anti-condensation performance
• No “moisture absorption” risk that occurs in oil-immersed transformers

This makes it ideal for wet underground tunnels, high-dust mining sites, and humid environments.

Not at all. The KBSG series is designed as a movable-type mining transformer, featuring:

• Optional skid-mounted, wheel-mounted, or towing-frame bases
• Easy relocation without affecting structural strength
• Suitable for mining faces where equipment positions change frequently

Compared with traditional fixed transformers, it is far more flexible and efficient for mobile mining power distribution.

Yes, absolutely.
The KBSG series is a mining explosion-proof model (Ex d I Mb) equipped with:

• Explosion-proof flamepath enclosure
• Pressure relief and isolation structure
• Fireproof flame path design

Even if an internal arc or fault occurs, it will not ignite external methane gas or coal dust, fully meeting mining safety requirements.

No. This series is engineered for high-impact industrial loads with:

• Reinforced coil structure for mechanical shock
• High thermal grade resin cast (Class F/H)
• Optimized cooling system to control temperature rise
• Optional automatic over-temperature protection

It maintains stable operation even when powering crushers, conveyors, winches, pump stations, drilling rigs, and other heavy-duty mining equipment.

No. The KBSG enclosure is built with:

• Thick steel plate body
• Heavy-duty anti-corrosion coating
• Optional C3 / C4 / C5 marine-grade anti-corrosion paint

It performs reliably in underground humidity, corrosive vapor zones, and open-pit mining areas, offering a significantly longer service life than standard transformers.

The KBSG uses a compact structural design:

• 20–30% smaller footprint than traditional units
• Fits narrow tunnels, mobile working platforms, and underground stations
• Customizable dimensions based on your mine layout

It is fully optimized for space-restricted mining conditions.

The dry-type structure makes maintenance extremely simple:

• No oil, no leakage, no fire hazard
• No need for oil testing or replacement
• Very low failure rate
• Regular visual checks are sufficient for safe operation

This dramatically reduces operation & maintenance costs and prevents production delays.

Yes.
The KBSG series supports both 50Hz and 60Hz:

• Suitable for international mining companies
• One model can be deployed across multiple countries
• Offers stronger compatibility for global mining operations