A glow wire examination is suited to fireplace hazard tests of electrical and electronic merchandise, residence appliances as well as their internal combustible resources. 

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a) Mount or clamp the specimen Along with the flat examination area vertical and the idea with the glow-wire centered over the specimen surface area.

The test is executed to ascertain the ignition hazard of electrical and Digital tools, as well as flammability, glow-wire ignition temperature (GWIT), and glow-wire flammability index (GWFI) of solid insulating products and also other solid combustible components by heating the heater wire of specified material and form for the test temperature with substantial existing for just a specified timeframe, then scalding the exam specimen vertically with specified pressure for a certain period of time, and observing if the specimen and also the bedding item ignites or even the burning time.

IEC 60695-2-thirteen states that "the examination benefits make it doable to offer a relative comparison of various products based on the temperature at which the exam specimen ignites through the application from the electrically heated glow-wire made use of as an ignition supply."

The GWFI is the best temperature at which the fabric either will not ignite or self extinguishes inside of thirty seconds once the heating component is eliminated and also the tissue paper beneath the exam specimen would not ignite.

The equipment has an more than-temperature security operate which immediately disconnects the heating circuit if the established temperature is attained. Hence, the preset temperature need to not be lessen than the normal Performing temperature, or else, it will not likely Glow Wire tester perform adequately.

The glow wire temperature needs to be setup to start with. Heating the glow wire to get to the necessary temperature.

b) the flames or glowing in the specimen extinguish in 30s right after removal of your glow-wire and there is no ignition on the wrapping tissue.

With aims to avoid Glow Wire tester hearth danger, the ingredient of electrotechnical merchandise like its circuit, and supplies, should be examined to understand their ignition temperature and become diminished to an appropriate amount of prospective dangers of fireplace.

c) Warmth the glow-wire to the desired temperature. Make sure that this temperature is constany in 5K for just a duration of at the very least 60s, the glow-wire is no less than 5.0mm away from the specimen, and no futher adjustment for the heating current or voltage will be to be created right until the examination is completed.

b) Spot the present wrapping tissue/picket board in a distance of 200mm±5mm underneath the location the place the glow-wire placed on the specimen.

GWIT is definitely the least temperature at which the material ignites and burns for in excess of 5s in the event the heating aspect arrives into contact with the sample. (Ignition is judged to get flaming for ≥ five seconds).

Once the experiment is finished, eject the heating button after which flip the Glow Wire tester current adjustment knob to your least.