IEC 60332 Bunched Wire And Cable Combustion Test Chamber
The
IEC 60332 Bunched Wire And Cable Combustion Test Chamber is designed for evaluating the flame retardant properties of vertically installed bundled wires, cables, and optical cables under controlled conditions.
Scope of Application
This equipment is suitable for judging and evaluating the ability of vertically installed bundled wires, cables, or optical cables to inhibit vertical flame spread under specified test conditions.
Compliance Standards
- GB/T18380.31-2008, IEC60332-3-10-2000: Cables and Optical Cables Fire Test Part 31
- GB/T18380.32-2008/IEC60332-3-21:2000: Vertical Flame Spread Test Category A F/R
- GB/T18380.33-2008/IEC60332-3-22:2000: Vertical Flame Spread Test Category A
- GB/T18380.35-2008/IEC60332-3-24:2000: Vertical Flame Spread Test Category C
- GB/T18380.36-2008/IEC60332-3-25:2000: Vertical Flame Spread Test Category D
Technical Specifications
Instrument Composition
The system consists of three main components: combustion box, electric control box, and spray purification box.
Combustion Box Features
- Top-mounted exhaust port for uniform gas discharge
- Multiple air intake holes at bottom to maintain oxygen content
- Water spray device for forced flame extinguishing after specified test duration
- Front door with high-temperature resistant tempered glass observation window
Test Chamber Specifications
Self-supporting box with dimensions: width (1000±100) mm, depth (2000±100) mm, height (4000±100) mm.
Construction Details
- Insulated with thermal mineral wool ("mullite thermal insulating fiber")
- Inner box: 1.5mm thick 304# stainless steel
- Outer box: electrostatically sprayed steel plate (customer configurable)
- Internal thermocouple for temperature monitoring
Ventilation and Safety Systems
- Smoke hood positioned 200-400mm above combustion chamber outlet
- Air and smoke mixing baffle for proper gas mixing
- Exhaust capacity exceeding 1m³/s at normal pressure and 25°C
- Manual sprinkler system for test termination if required
- High-pressure water spray gun for post-test cleaning