Glow wire apparatus is the commonly used equipment for testing solid insulating material for fire hazard testing. This test apparatus is covered in IEC 60695-2-10:2021 and commonly referred for various devices in many standards such as IEC 60335, IEC 60695-2-11, IEC 60695-2-12, IEC 60598-1, IEC 60947, IEC 60898, IEC 61008-1, IEC 60669-1, IEC 60884-1, IEC 60950-1 / IS 13252, IEC 60238, IEC 60745-1, IEC 60400, IEC 60730-1, IEC 61050, IEC 60320-1, IEC 61058-1, ASTM D 6194-03 and UL 60745-1.
As per IEC 60695 - 2 - 10 : 2021 (Glowing/hot-wire based test methods – Glow-wire apparatus and common test procedure), parts of solid insulating materials are ignited by glowing wires. A nickel/chromium wire is heated to 960°C and the insulating material is pushed against it with a force of 1 Newton. It is checked that the insulating material does not attain a certain temperature or catches fire so as to prevent fire hazard in their vicinity. For complete description, please refer IEC 60695 - 2 - 10 : 2021, even if you have product specific standards such as IEC 60898 for Miniature Circuit Breakers (MCB), IEC 60335 for Safety of Electrical Appliances or IEC 60947 for Switchgears and so on. If your product is to be tested for conformity assessment, please also refer ASTM D 6194 – 3 (Standard Test Method for Glow-wire ignition of materials).For all products made by us to test as per UL 746 A, please download this PDF file.