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Help CenterIEC60695-2-10 Lab Testing Machine Glow Wire Tester
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Glow-Wire Test Apparatus (GW-1H)
1. Introduction
The glow wire tester is designed according to IEC60695-2-10 t0 IEC60695-2-13, UL746A, IEC829, DIN695 and VDE0471. The specific material and sharp heating wire is heated to specific temperature (550 ℃~960 ℃) for 1 min by max current, then vertical burns the EUT with certain pressure (0.95N) for 30s, then check if the test specimen and bedding material are burning, and count the burning time to judge the dangerousness of the specimen. Generally it is applied to test flammability, GWIT and GWFI of lighting lamps, electronic products and household appliances The equipment is applicable to flame resistance test of all levels of QC departments and corresponding enterprises.
Glow wire testing is an electrical safety test designed to evaluate the flame resistant properties of plastic materials used in electrical devices. Its purpose is to protect against the risk of fire from overheated or electrically energised parts which may cause the plastic material to ignite. This may occur in normal use, under reasonable abnormal use, malfunction or failure of the product. The glow wire simulates an over-heated part which then comes into contact with plastic materials.
The glow-wire test apparatus is controlled by single chips and push buttons, the shell is made of coating metal sheet, the test apparatus is built-in air exhaust, and the front panel is transparent for easy observation of the experimental process.
GWFI——glow-wire flammability index. Within 30 seconds after removing the glow wire, if the flame of the test sample is extinguished, the packaged crepe paper under the sample does not ignite, and the sample does not ignite, then the temperature can be recorded as acceptable. If the above conditions are not met, you will need to select a lower temperature for testing. The maximum temperature that can be achieved by three consecutive experiments plus 25k is the glow wire light-off temperature.
GWIT——glow-wire ignition temperature, GWIT is the lowest temperature at which the material will ignite and the burning time exceeds 5 s when the heating element is in contact with the sample.
2. Parameters
Glow-wire Loop |
Diameter: 4mm ± 0.04mm Material: Ni/Cr(80/20) Sharp: 500W standardized loop, horizontally placed |
Thermocouple |
Diameter: Φ1mm K type Material: K type (The insulating sleeve heat resist to 1250 ℃) |
Glow-Wire Heating Temperature |
500 ℃ ~1000℃ (presettable) temperature fluctuation |
Temperature Monitor |
A thermocouple is placed at a distance of 100 mm between the glow wire device and the back panel of the cabinet, and an external temperature display instrument is provided |
Flame Height |
Measuring with a steel ruler |
Thermal radiation baffle |
Automatic masking |
Pressure on test specimen |
0.95N±0.1N |
Maximum penetration depth |
7mm ± 0.5mm (adjustable) |
Specimen moving speed |
10mm /s ~25mm /s |
Glow Time |
30s±0.1s(1s ～ 999.9s adjustable) |
Burning time |
0-999.9s±0.1s (auto record) |
Flame Chilling time |
0-999.9s±0.1s (auto record) |
Standard Silver Foil |
Thickness:0.06mm Purity:≥99.8% Area: 2mm2 |
Ignition mat |
White pine board with thickness of 10mm is covered with a layer of 12~30g/m2 wrapping tissue, 200±5mm below the sample. |
Chamber volume |
≥ 0.5m3 , matte black background, illuminance ≤ 20Lux, exhaust hole: Φ70mm (Power on automatic work) |
Dimension |
1220mm * 600mm *1250mm (W*D*H), exhaust device: Φ100mm |
Power |
1kVA 220V/50-60Hz |
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