Fire Testing System for Cables – KBT 916
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Fire Testing System for Cables – KBT 916 Bunched Cable Vertical Flame Spread Tester in Accordance with EN 50399 and IEC 60332-3-10 Analyzing & Testing

Bunched Cable Vertical Flame Spread Tester – KBT 916 For testing the vertical installation of a bunched power, control or fiber optic cable to suppress vertical spreading of the flame under specified conditions. Most important parameters, such as the heat release and smoke production during flame spread tests under fire condition are in accordance with EN 50399 and IEC 60332-3-10. Fire tests are important for determining the behavior of cables in the case of fire. Single flame testing is the minimum performance requirement specified in the standards. The objective of these tests is to...

Method & Required Cable Material Test Method In a chamber, the cable is exposed to a burning time of 20 min. The cables (number depending on the cable diameter) are mounted on a ladder in a vertical tube furnace and a flame is applied to them using a ribbon-type propane gas burner (AGF) with Venturi Mixer (20.5 kW/30 kW). The ignition point is adopted to evaluate the combustion behavior and combustion performance of the cable. During this time, the flame spread and the burning droplets/ particles are observed. At the end of the test, the length of the fire damage is measured. The flue gases...

Cable Length in Accordance with EN 50399 Using the EN 50399 test, one can obtain early-stage combustion performance data for cable fires. The heat release rate test shows flame spread along the cable and the fire source’s potential impact on adjacent areas. In the dangerous area where the fire smoke density is high, tests on visibility and smoke indicate the impact on personal safety. In accordance with EN 50399, each cable sample length amounts to 3.5 m. The calculation of the total heat release (THR) and total smoke production (TSP) is based on the equation given in the standard.

TRENDSETTING TECHNOLOGY Test Chamber Ribbon Burner Measuring and Control Unit The test chamber with the total dimensions of 135 x 235 x 430 cm3 (WxDxH) consists of a double wall design with stainless steel cladding and square steel profiles. The insulation is made of a 6.5-cm-thick layer of mineral wool. For air supply, an opening in the ground is installed with a width of 80 cm and a depth of 40 cm. The air chamber has an extinguishing water drain. There is also an opening for smoke extraction (100 cm x 30 cm). The ribbon propane burner comes with a Venturi mixer, igniter and flame...

Euro Classification Trendsetting Technology Euro Class Standard EN 50399 (30 kW flame source) Gas Treatment The flue gas is extracted via a pump (60 - 300 l/min) in the area of the measuring section and is initially filtered through a prefilter and a fine filter (0.1 µm). The sample gas is dried at 10°C by an efficient Peltier cooling system without mechanical components. Drying with a drying agent (Drierite) is additionally possible. The flow of the sample gas through the analyzer is controlled by means of bypass valves. compliance with s1 transmittance ≥ 80 % compliance with s1...

Maximum security against fire Flaming Droplets/ Particles Classification d0 = if no flaming droplets/ particles occur within 1200s d1 = if no flaming droplets/ particles lasting for more than 10 s occurs within 1200 s d2 = if no performance is specified for the product or it does not meet the criteria for d0 and d1 Smoke Acidity Classification a1 = if an electrical conductivity of < 2.5 µS/mm and a pH of > 4.3 are obtained during testing according to EN 50267-2-3 a2 = if an electrical conductivity of < 10 µS/mm and a pH of > 4.3 are obtained during testing according to EN 50267-2-3 Basic...

Measuring method in accordance with DIN EN 50399 KBT test chamber with sample holder, hood, collector, measuring tube, gas installation, burner, air supply and sensors Double-walled test chamber, stainless steel with mineral wool insulation, opening for air supply at the bottom, opening for smoke extraction, rail guides on the back wall for easy mounting of sample holders, electric winch assembly, stainless steel door with fireresistant glazing Cable winch with electric drive, ramp and option for easier transport of the sample holder Exhaust gas fan with frequency converter and digital flow...

SCHEMATIC DRAWING OF KBT 916 AND EXHAUST PIPING Schematic drawing of the KBT 916, open measuring chamber with ladder dimensions of the entire device: length 8.60 m x width 2.50 m x minimum height 4.10 m

KBT 916 SOFTWARE Graphical and numerical display of all test results Freely configurable display of results (chart, diagram, text); up to 16 configurable windows Configuration of measurement points Allocation of name, measurement range, correction value for each channel, analysis of thresholds Calibration of gas analysis User guidance for test procedure and dialog for automated adjustment of gas analysis Prior to test, 300-s recording of data Automatic activation of valves and burner Monitoring of HRR and excess temperature in the exhaust duct Online calculation: HRR, THR, SPR, TSP, FIGRA...

IN ACCORDANCE WITH STANDARDS Test report Test report printout in accordance with DIN EN 50399, with graphical and numerical display options Display of current calibration data as part of the test report Conversion to PDF format Copying of report data (texts/graphics) to the clipboard for further use in user-specific documents Additional features Monitoring of measurement with display of relevant data and messages; shutdown when individual values exceed critical thresholds Storage of test data in raw format (binary) and storage in CSV format Acoustic signals TEST REPORT EASY CALIBRATION...

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