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IEC 60695-11-5 Flammability Testing Equipment Needle Flame Test
Standard:
IEC 60695-11-5 Fire hazard testing - Part 11-5: Test flames - Needle-flame test method - Apparatus, confirmatory test arrangement and guidance
Application:
This part of IEC 60695 specifies a needle-flame test to simulate the effect of a small flame which may result from fault conditions, in order to assess the fire hazard by a simulation technique. The results of this test may be used as elements of a fire hazard assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.
Summary of the test method:
The test specimen is arranged in a vertical position over tissue
paper. A propane gas flame is applied to the edge as well as to the
flat surface. The burning time, flammability and severity (exposure
time) are determined for this flame application. The test is
usually performed on parts or selected areas of these parts.
Test sample:
It is applicable to electrotechnical equipment, its sub-assemblies and components and to solid electrical insulating materials or other combustible materials.
Parameters:
| ParametersModel | NF-1 | NF-2(Touch screen) |
| Working voltage | 220V/50Hz | 220V/50Hz |
| Control operation mode | Electrical control, button operation | PLC control, 7 inch color touch screen operation, with infrared remote control |
| Burner | Inner boreφ0.5mm ± 0.1mm , outter diameter ≤φ0.9mm ,long ≥ 35mm, stainless steel | |
| Gas supply | Butane or propane gas having a purity of at least 95% ( can use the bottled lighter gas) | |
| Height of the flame | 12±1mm adjustable (with flame height gauge) | |
| Flame warming requirement | From 100°±5°C to 700°±3°C,time for standard values within 23.5S±1S | |
| Combustion angle | Tilt 45°( testing ) or vertical ( when adjust the height of the flame) | |
| Tray | A layer of silk paper (12~30g/m³) is covered on the 10mm thick pine board, with a distance of 200±5mm below the test sample | |
| Timer/sustained combustion | 0-9999X0.1S | |
| Temperature measuring distance | The distance between the top center of the burner and the test sample:8±1mm | |
| Temperature calibration | Temperature measuring copper head:Φ4±0.01mm,weight:0.58±0.01g | |
Temperature thermocouple The American original Omega φ0.5 armour nickel-chromium/nickel aluminum wire K-Thermocouple, temperature resistance 1100° | ||
| Temperature measuring distance:6±0.5mm | ||
| Air volume control | The flame height can be adjusted by adjusting the flow meter | |
| Test procedure | Automatic control, independent exhaust | |
| Lighting | Equip with lighting in the test chamber, with control | |
| Test chamber and dimensions | >0.5 cube, black yogon background, with exhaust fan, size:1100*550*1200mm, weight:130kg | |
