Circuit Integrity Apparatus under Fire – Severe fire simulation according to IEC 60331 (750°C – 830°C)

ZONSKY's Circuit Integrity Under Fire Conditions Apparatus simulates severe fire environments to guarantee that emergency and critical wiring systems stay operational when it matters most.

Product applications: Real-time performance tracking of conductor continuity and circuit functionality while under direct flame exposure. Subjects cable assemblies to intense, standardized fire conditions to measure insulation breakdown. Delivers precise metrics on the exact fire-resistance thresholds of your electrical components. Helps manufacturers prove their cables meet strict regulatory and emergency survival standards.

Complies with standards: IEC 60331-11:1999 (fire alone at 750°C), IEC 60331-12:2002 (fire with shock at 830°C), IEC 60331-21:1999 (cables up to 0.61/1.0 kV), IEC 60331-23:1999 (electric data cables), IEC 60331-25:1999 (optical fiber cables), IEC 60331-31:2002 (fire with shock for cables up to 0.61/1.0 kV). Also complies with GB/T 19216.21, GB/T 19216.23 and GB/T 19216.31 for continuity checking.

Main technical parameters:

• Supporting gas: Compressed air (air pressure >10MPa)
• Flowmeters: Two rotor flowmeters, adjustable air flow (0 to 200 L/min) and gas flow (0 to 20 L/min)
• Thermocouple installation: Torch positioned 45mm (±x mm) horizontally and 70mm (±y mm) vertically from the thermocouple center
• Verification: Average thermocouple reading within (750±50)°C over 10 minutes, max difference ≤40°C
• Ignition device: Chengming small flame ignition
• Fire time: 0 to 99 minutes
• Power requirements: AC380V (±10%) / 50Hz
• Operating power: 1KW
• Heat source verification: K-type thermocouples (φ1.5mm mineral insulated stainless steel sheath)
• Test wall: Non-combustible, non-metallic material (heat-resistant plate: 900mm height, 300mm width, 9mm thickness)
• Torch positioning: Horizontal: 100mm to 120mm from thermocouple, vertical: 40mm to 60mm downward