The Circuit Integrity Under Fire Conditions Apparatus is a specialized testing device designed to evaluate the operational resilience of electrical circuits exposed to fire. It subjects cables and wiring systems to high-temperature flame exposure while monitoring key parameters such as conductor continuity, insulation integrity, and circuit functionality throughout the test. This equipment provides essential data on the fire-resistance performance of electrical components.Talk To Our Team
Circuit Integrity Apparatus Compliance:
IEC 60331-11:1999 – Tests for electric cables under fire conditions – Circuit integrity – Part 11: Apparatus – Fire alone at a flame temperature of at least 750°C.
IEC 60331-12:2002 – Tests for electric cables under fire conditions – Circuit integrity – Part 12: Apparatus – Fire with shock at a temperature of at least 830°C.
IEC 60331-21:1999 – Tests for electric cables under fire conditions – Circuit integrity – Part 21: Procedures and requirements – Cables of rated voltages up to and including 0.61/1.0 kV.
IEC 60331-23:1999 – Tests for electric cables under fire conditions – Circuit integrity – Part 23: Procedures and requirements – Electric data cables.
IEC 60331-25:1999 – Tests for electric cables under fire conditions – Circuit integrity – Part 25: Procedures and requirements – Optical fiber cables.
IEC 60331-31:2002 – Tests for electric cables under fire conditions – Circuit integrity – Part 31: Procedures and requirements for fire with shock – Cables of rated voltages up to and including 0.61/1.0 kV.
Main Parameters
Parameter
Specification
Supporting Gas
Compressed air (air pressure >10MPa)
Flowmeter
Two rotor flowmeters, adjustable air flow (0 to 200L/min) and gas flow (0 to 20L/min)
Thermocouple Installation
Torch positioned 45mm (±x mm) horizontally and 70mm (±y mm) vertically from the thermocouple center
Verification Judgment
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
Continuity Checking
In compliance with GB/T 19216.21, GB/T 19216.23, and GB/T 19216.31
Heat Source Verification
Uses K-type thermocouples (φ1.5mm mineral insulated stainless steel sheath)
