IEC 60695-2-10: glow wire apparatus and common test procedure

IEC 60695-2-10 details the apparatus set up and test procedure used in the glow-wire test. The image below shows the glow wire apparatus set up in┬ákA Testing Facility’s glow wire test chamber.

Apparatus

The apparatus includes:

  • The glow wire
  • Circuit to heat the wire
  • System to measure the temperature of the wire
  • Piece of tissue paper to catch any falling debris
  • Draught-free test chamber
  • Timing device
  • Clamped or mounted specimen
  • Ruler to measure flame height

Test Procedure

The test is conducted by first heating the glow-wire to the required temperature. Either the specimen is then brought into contact with the tip, or the tip is moved into contact with the specimen. Observations and results are then recorded in accordance with the relevant glow-wire standard:

  • IEC 60695-2-11: Glow-wire flammability test method for end products (GWEPT)
  • IEC 60695-2-12: Glow-wire flammability index (GWFI) test method for materials
  • IEC 60695-2-13: Glow-wire ignition temperature (GWIT) test method for materials