GLOW WIRE TESTER (also known as Glow Wire Test Apparatus) is designed to carry out fire hazard testing as specified in IEC 60695-2-10 2000-10. Flammability test is to check the ‘Resistance to Fire’ of electrical insulators that touch directly conducting parts & also parts of insulators. This test is also referred in many other standards such as IS 11000, IS 3854 : 1997 / IS 1293 :1988 / IS 371 :1999 & IS 11000 Pt 2 Sec 1, IEC 60335, IEC 884/94, IEC 60598, IEC 61058, BS 6458, BS EN 60695–2-10,11,12, etc.
Nickel / Chromium based heating element (glow wire)
Cr / Al based fine wire based thermocouple for temperature sensing
Temperature Range - Adjustable up to 960° centigrade
A motorized sliding carrier with an universally adjusted SS perforated tray is provided to mount the specimen.
Self adjusting constant current mode operation as soon as heater-specimen contact is established.
Motor brings the jig back to the pre-test position automatically as soon as the test is concluded.
Time Controller - Micro-controller based programmable timer 0 to 999secPrecision scale : Precision scale is provided to measure the height of the flame.
Safety – Emergency Switch, MCB, Fuses Entire panel hoisted in aluminium sections for better aesthetics
Fully Automated Panel
Temperature Sensor – Thermocouple : Fine wire of Cr/Al of 0.5 mm diameter located in 0.6 mm diameter pocket hole in temperature sheath resistant to 1000 degree centigrade.
In the model GWT A2, current is held approximately constant (15 % swing) once the heating element touches the specimen.
Heating Element – Glow Wire : Nickel / Chromium (Ni/Cr-80:20%) wire of 4mm diameter with a shape as per the standard
Time Controller - Micro-controller based programmable timer 0 to 999 sec
The total test time can be programmed through keyboard.
The ignition time and extinguish time of flame can be registered in timer.
The stored time values can be viewed after the end of test.
Setting on PC for PC based variant
Penetration Depth - Mechanically restricted to 7 mm.
Specimen size - 180 x 150 Sq.mm max. & 15 x 15 Sq. mm min., Thickness 10mm to 80 mm
Test specimen contact force against the glow wire is preloaded to 0.8 to 1.2N.
Test Chamber Dimensions – (Available only with automatic variants)
Dimensions – 600 mm W x 300 mm D x 610 mm H. (approx.)
Supply Voltage – 230 V AC, 50 Hz, 1 Phase, 500 VA
The product can be customized as PC based or semi-automatic (microcontroller based), with or without an optional test chamber.
The test is carried out to asses the flammability characteristics of a MCB body, typically made up of thermoplasts and thermosets. The glow wire tester is an important tool not just to assess the quality of the MCB, but also to continuously check the incoming components related to the MCB body for their flammability characteristics. MCB moulds manufacturers can use this product to ascertain the quality of the MCB under test.