General Information
- Measurement of smoke density of cables burning under defined conditions,
smoke density.(IEC 61034 -1 & -2)
The ‘’3 meter cube test’’ measures the generation of smoke from electric cables during fire. The tray containing the alcohol shall be supported above the ground surface to permit air circulation around and beneath the tray. The test pieces (cables or bundles) shall laid touching in a horizontal position and centre above the tray. The air circulation will be started and the alcohol (1 liter) will be ignited. The light intensity will be measured between the light source and the photocell. The test is considered as ended when there is no decrease in light transmittance for 5 minutes after the fire source has extinguished or when the test duration reaches 40 minutes. The test will be passed, if the recorded light transmittance is min. 60% that means the smoke density has a value of max. 40%.
Kind of test using the equipment:
- Smoke Emission Test on Cables (IEC 61034)
Technical specifications
- Light source.
The light source shall be a halogen lamp with a tungsten filament with a clear quartz bulb having the following characteristics:
- Nominal power: 100 W
- Nominal voltage: 12 V
- Nominal luminous flux: 2000 ~ 3000 lm
- Nominal colour temperature: 2800 ~ 3200 K
- The receptor photocell, the receptor shall be mounted at the end of 150mm tube
with a dust protection window at the other hand. The inside of the tube with the
diameter 40 mm shall be matt black to prevent reflections. The output of the
photocell is applied to data acquired and analyzed by the operation system.
- The Industrial Personal Computer (contains printer) and the operation system
