Glow Wire Test Apparatus IS 1293 : 2019

Product Details

GLOW WIRE TEST APPARATUS Model No. GW-291-E is a device used to test the fire-resistance of materials by simulating the heat generated by electrical components. It assesses how materials react to high temperatures to ensure safety in electrical equipment, helping to prevent fire hazards. The Glow-wire is made from nickel/chromium (80/20) wire, with an overall nominal diameter of 4mm.The wire is formed into a loop as detailed in figure 1 in IS 11000-2-1(2008) Electrical connections for the glow-wire are capable of carrying the current without affecting the performance or long-term stability of the circuit. Tne typical current necessary for heating the tip to a temperature of 9600 C is between 120 A and 150 A The test apparatus is designed so that the glow-wire is kept in a horizontal plane and that lt applies a force of 1.0 N + 0.2 N to the test specimen during the application of the glow-wire.The force shall be maintained at this value when the glow-wire or the test specimen is moved horizontally one towards the other. The penetration of the tip of the glow-wire into and through the test specimen shall be limited to 7 mm + 0.5 mm.  The test apparatus is designed so that the glow-wire is kept in a horizontal plane and that lt applies a force of 1.0 N + 0.2 N to the test specimen during the application of the glow-wire.The force shall be maintained at this value when the glow-wire or the test specimen is moved horizontally one towards the other. The penetration of the tip of the glow-wire into and through the test specimen shall be limited to 7 mm + 0.5 mm.  The test apparatus is so designed that burning or glowing particles falling from the test specimen are able to fall on the layer as specified in 5.3 in in IS 11000-2-1 (2008) The temperature of the tip of the glow-wire sis measured by a class 1 (see IEC 60584-2) mineral-insulated metal-sheathed fine-wire thermocouple with an insulated junction.  The test chamber is operated in a draught-free condition. This can be achieved by using a chamber with a volume of at least 0.5 m3 which permits observation of the test specimen. The volume of the chamber shall be such that oxygen depletion during the test does not significantly affect the result. IS 1293, IS 14927 (Part 1) : 2023, IS 14927 (Part 2/Sec1) : 2023 , IEC 61084-2-1 : 2017 , IEC 61084-1 : 2017 , IS 9537