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IEC 61034 Measurement of smoke density of cables burning under defined conditions
Through the combustion of thermoplastic cables, e.g. PVC, PE, the visibility get worse resulted by very large amount of black and thick smoke. Fire fighting and rescue operations shall be restricted at places with a lot of public. The persons in this part of the building get restricted to leave over the emergency exit because of poor visibility. A test chamber with a photometric measurement is developed to determinate the smoke density of the cables under defined conditons.
IEC 61034-1
This part describe details of the test apparatus to be used for measuring the smoke density, as test chamber, the photometric system and the fan to ensure uniform distribution of the smoke. Further the method for calibrating the test equipment is described.
IEC 61034-2
This part of IEC 61034 describe the test procedure for measuring the smoke density. Test pieces (overall diameter ≥ 2mm) shall be installed horizontal above a alcohol tray. The fan ensures uniform distribution of the smoke and the alcohol has to be ligthed. During the combustion the remaining light transmission through the smoke will be measured by the photometric system.
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