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Hot Wire Coil Ignitability Test Apparatus of IEC60695-2-20 Hot Wire Based Test

Professional Quality Assurance Equipment Factory Specialists for IEC,UL,BS,VDE compliant test equipment.Hot wire coil ignitability test apparatus of IEC60695-2-20 hot wire based test.

  • Item NO.:

    ZLT-HWI
  • Order(MOQ):

    1
  • Payment:

    T/T
  • Product Origin:

    China
  • Shipping Port:

    Guangzhou
  • Lead Time:

    20 days
  • Product Detail

Hot-Wire Coil Ignitability Test Apparatus of IEC 60695-2-20 Hot Wire Based Test

Product details: Model ZLT-HWI

To measure the time required to ignite the test specimen during the application of heat from an electrically heated coil as an ignition source, according to IEC60695-2-20.

A rectangular bar-shaped test specimen is supported horizontally at both ends, the centre portion is wrapped with a coil of heater wire, a fixed power density is applied to the coil, which rapidly heats up and the behavior of the test specimen is observed. The time to ignition is recorded and/ or a melt through condition is recorded as M.

This test method assesses the relative resistance of electrical insulating materials to ignition by the effects of a hot wire.

Standard Outfit:

1 current, current yielding a linear power density of 0,26W/mm±0,01W/mm through the heater wire,

1 test specimen winding device, according to IEC60695-2-20 Fig 4, shall be provided to wind five turns of the heater wire uniformly on the test specimen with a 6,3 mm±0,2 mm pitch and a tension of 5,4 N±0,05 N,

1 test fixture, two supporting posts, positioned 70 mm±2 mm apart are provided with hold down clamps to support the test specimen in a horizontal and flat position. The test specimen shall be supported 60 mm±2 mm above and in the approximate centre of the bottom of the chamber,

1 supply circuit, provided 0,31 W/mm power density,  adjusting the power level smoothly and continuously, with an on-off switch for the test power and timers to record the duration of application of the test power,

20 m NiCr (80/20) heater wire, having a diameter of 0,5 mm+0,020mm, and has a nominal cold resistance of approximately 5,25Ω/m

1 chamber with a volume of at least 0,5 m3, black interior,

Power supply: 220V50Hz other voltages request.

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