The wire and cable fire resistance testing device is an assembly device consisting of a sample holder, propane gas burner, control panel, temperature measurement equipment, and k-shaped armored thermocouple. The device is designed to measure the fire resistance performance of cables used in wiring or power grids, and the testing conditions are controlled to burn in a hot gas outlet at 750 ° C.
Device configuration:
1. Sample holder
A stainless steel rod (110mm long, 10mm diameter), 2 brackets, 2 double clamps, and 2 pliers.
2. Belt type propane gas burner nozzle, with a nominal nozzle length of 500mm, 3 rows of combustion holes arranged, equipped with Venturi mixer and fastening support bracket.
3. Control panel:
(1) 800 ml/min gas flow meter with an accuracy of ± 2%;
(2) 50 ml/min gas flow meter with an accuracy of ± 2%;
(3) Flame safety equipment, equipped with piezoelectric igniters.
(4) 2 pressure gauges, pressure range 0/7.5 kPa
(5) 2 control valves, gas and air flow control
4. Temperature measurement equipment for easy control of testing temperature.
5. Two stainless steel K-shaped armored thermocouples are connected to a computer and data is collected through a data logger.
Reference standard:
CEI 20-36/1
IEC 60331
Supply demand:
Propane gas/compressed air minimum 3 bar.