IEC 332-3 Test on Bundled Wires or Cables in Fire Conditions

EUROLAB laboratory provides testing and compliance services within the scope of IEC 332-3 standard. This standard specifies test methods for the assessment of vertical flame propagation of bundled wires mounted vertically.

The test rig is a vertical test chamber with a width of 1 000 mm ± 100 mm, a depth of 2000 mm ± 100 mm and a height of 4 mm ± 000 mm; the floor of the room should be raised above the ground. The test chamber should be nominally airtight. The sides are located at a distance of 100 mm ± 800 mm from the front wall of the chamber 20 mm ± 400 mm × 10 mm ± 150 mm through an air-accepting opening at the base of the test. Airflow should be set at a rate.

5 000 l/min ± 500 l/min at a constant controlled m (20 ± 10) °C and outlet or inlet side before the test starts. These parameters should preferably be arranged during. The exit should be 300 mm ± 30 mm × 1000 mm ± 100 mm at the trailing edge of the upper part of the test. The back and sides of the test chamber should be thermally insulated to give its coefficient.

For example, a steel plate 1,5 mm to 2,0 mm thick is covered with 65 mm mineral wool. The outer coating is satisfactory. The distance between this ladder and the rear wall of the chamber is 150mm ± 10mm, and the bottom rung of the ladder and the floor is 400mm ± 5mm. The clearance between the lowest point of the test piece and the ground is approximately 100 mm.

EUROLAB assists manufacturers with IEC 332-3 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.