Lab Equipment IEC60695 Hot Wire Ignition Tester , HWI Test
Equipment Product information: This tester conforms to the standard requirement of IEC60695-2-20.
It is suitable for electric and electronic products, household
appliance materials to do ignition dangerous test. It simulates the
heat source or ignition source of simulates glow component and
overload resistance which may cause thermal stress in a short time. Hot-wire coil ignition test adopts the specific size(ф0.5mm
length:250mm)and specific material (Ni80/Cr20) of heater strip
which is pre-annealed with required heating power(0.26W/mm) and
time(8s～12s). Then coil heater strip on the specimen for 5 cycles
according to certain wire wrapping tension (5.4N) and certain wire
wrapping distance (6.35mm). Next, take the specimen with wrapping
heater strip to test until 120s under the stipulate heating power
(0.26W/mm) the users can judge the fire risk according to whether
the specimen ignite and the ignite time. Technical parameters: Parameter model | HWI-1 | conforms to standard | IEC60695-2-20,GB4943 | Heating coil | ф0.5mm,Ni80/Cr20,length:250mm±5mm ,cold resistance 5.28Ω/m | Anneal holder distance | 250mm | Specimen holder distance and height | 70mm,high:60mm(the distance between the holder surface to the
connector plate surface) | Wire wrapping tension and its distance | 5.4N±0.05N,6.3mm±0.2mm(within 31.5mm±0.5mm,coil 5 cycle,national
standard is 6mm) | Annealing time and power | 8s～12s(1s～999.9s digital display can be preset),0.26W/mm±4%(digital
display is adjustable) | Testing time and power | 120s(1s～999.9s digital display can be preset),0.26W/mm±4%( digital
display is adjustable) | Specimen size | L×W×H:(125 ± 5mm) ×(13.0 ± 0.5mm) ×(0.75+0.075
0mm,1.5+0.15 0mm,3+0.3 0mm)[ national standard is 0.75±
0.1 mm,1.5± 0.1 mm,3± 0.2 mm] | Combustion box volume | Greater than0.5 cube(can be order 0.75 cube,1cube) | Power supply | AC 220V±10%,50Hz；110V,60Hz |
Hot Wire Ignition Test is a type of resistance test to fire for
materials of enclosures and decorative parts. The sample is put on
a specified stand and an element wire is winded around the material
to be tested
Technical specification
The test sample is sourced by DC power
Element Wire 80% Nickel and 20% Chromium – 3 bobbins included
Power consumption 0.26 W/mm – means a current of 7 A to passes
through the element wire
Digital Ammeter and Voltmeter
Terminal to connect the element wire |
