An underground coal mine required lighting certified for Zone 1 explosive atmospheres (methane gas). Standard fixtures posed ignition risk. Existing fixtures were heavy, difficult to install in low-seam mines, and required frequent maintenance.

Queendom Solution

Queendom supplied EX-50W-LED explosion-proof lights with Ex d IIB T4 certification, 50W LED in flameproof enclosure, and 24V DC operation. The lightweight design (3.5kg) enabled single-person installation in low-seam conditions.

Key Advantages:

  • Ex d IIB T4: Zone 1 explosive atmosphere certified
  • 50W LED: Replaces 100W incandescent, 50% energy savings
  • 3.5kg lightweight: Single-person installation
  • 24V DC: Intrinsically safe power supply
  • IP68: Waterproof for underground water spray
coal-mine-explosion-proof-lighting

Product Specifications

ParameterSpecification
FixtureEX-50W-LED explosion-proof light
Power50W (replaces 100W incandescent)
Ex RatingEx d IIB T4 Gb (Zone 1)
Voltage24V DC (intrinsically safe)
IP RatingIP68
Weight3.5 kg (lightweight for low-seam)
Lifespan50,000+ hours
CertificationsATEX / IECEx / Ex d IIB T4 / IP68 / CE

Application Scenarios

Underground Tunnel

Ex d IIB T4, 50W, 24V DC, 100m intervals

Working Face

Portable EX light, 3.5kg, magnetic mount

Refuge Chamber

Emergency EX light, 4-hour battery backup

Case Direction

Coal mine: ATEX/IECEx Ex d IIB T4 explosion-proof LED, 50W 24V DC, 3.5kg lightweight for low-seam installation.

Related Links

Solution: Hazardous Area Lighting Solutions
Product: Industrial Lighting Products
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