Standard:
IEC60950-1, IEC60947-1:2011, IEC60695-2-20.
Application:
The glow wire ignition test apparatus is suitable for electric and electronic products in order to perform ignition danger testing. It simulates the heat source or ignition source by simulating a glowing power component and overload resistance which may cause thermal stress in your electrical equipment.
Test sample:
Information technology equipment, low voltage switches and control equipment parts.
Parameters:
| Working voltage | 220V/50Hz |
| Control operation mode | Electrical control, button operation |
| Heating coil | ф0.5mm，Ni80/Cr20，length:250mm±5mm ,cold resistance 5.28Ω/m |
| Anneal holder distance | 250mm |
| Specimen holder distance and height | 70mm，height:60mm (the distance between the holder surface to the tray surface) |
| Wire wrapping tension and its distance | 5.4N±0.05N, 6.35mm±0. 5mm (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] |
| Test procedure | Automatic control, independent exhaust |
| Lighting | Equip with lighting in the test chamber, with control |
| Test chamber and dimension | >0.5³，black matte background，with exhaust fan，dimension: 1100*550*1200mm，130kg |
Feature:
The 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 of (0.26W/mm) and time (8s~12s). Then the coil heater strip is tested 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 for 120s under the stipulated heating power (0.26W/mm) the users can judge the risk of fire.
