Glow Wire Rating

Glow wire is a special flame retardant category specific to electrical components such as plugs, sockets and electrical housings and casings. Component flammability is tested using Glow Wire Tests according to IEC 60695-2-10 and/or the Needle Flame test according to IEC 60695-2-2. The specimen is considered to have withstood the GWT if one of the following applies:

 - There is no flame and no glowing on the sample.

 - Flames or glowing of the sample extinguish within 30 seconds after removal of the glow wire, and if the cotton or the paper underlay doesn't ignite or burn.

 The Glow Wire Test simulates thermal stresses that may be produced by such sources of heat or ignition, for example the glowing elements of overloaded resistors, in order to assess by simulation technique the fire hazard. Temperatures of glow wire test are: 550, 650, 750, 850 or 960 °C (depending on the relevant specification) All Perrite Flame retardant grades can be formulated to meet your required glow wire performance taking into consideration the shape and wall thickness of your particular application.