Flame with a temperature of not less than 750°C (control heat output) Devices used for cables and optical cables that require maintaining line integrity during separate fire tests 【Relevant Standards】

Cable and optical cable line integrity combustion tester according to GB/T19216.21-2003/IEC60331-21:1999 “Line integrity test of cables and optical cables under flame conditions Part 21: Test steps and requirements—- rated voltage of 0.6/1.0kv and below”, GB/T19216.232003/IEC60331-23:1999 Line integrity test of cables and optical cables under flame conditions Part 21: Test procedures and requirements —-Data cables”, GB/T19216.25-2003/IEC60331-25:1999 “Line integrity tests of cables and optical cables under flame conditions Part 21: Test procedures and requirements—- optical cables” test standards.

【Scope of application】: Flame with a temperature of not less than 750°C (control heat output) Devices used for cables and optical cables that require maintaining line integrity during separate fire tests [Meet the standard]: Cable and optical cable line integrity combustion tester according to GB/T19216.21-2003/IEC60331-21:1999 “Line integrity test of cables and optical cables under flame conditions Part 21: Test steps and requirements—- rated voltage of 0.6/1.0kv and below”, GB/T19216.232003/IEC60331-23:1999 Line integrity test of cables and optical cables under flame conditions Part 21: Test procedures and requirements —-Data cables”, GB/T19216.25-2003/IEC60331-25:1999 “Line integrity tests of cables and optical cables under flame conditions Part 21: Test procedures and requirements—- optical cables” test standards. 【Technical Parameters】: 1. The design of the combustion chamber is fixed on the angle iron bracket with suitable materials to form the whole cube combustion chamber. Combustion chamber: Inner dimensions: 3M x 3M x 3M 27 cubic meters in total. It can be brick wall structure or steel plate structure, which is chosen by the customer. If a brick wall structure is chosen, the customer needs to complete the masonry by himself. 2. Specimen holder: The specimen is supported by two or three metal rings. The support device is horizontally fixed, fixed at one end and movable at the other, with a metal ring inner diameter of 150 mm, made of (10±2) mm diameter round steel rods. 3. Combustion device: (1) Blowtorch: a belt-type propane gas blowtorch with a nominal length of 500mm and a width of 15mm for a nozzle with a venturi mixer, with three rows of staggered drilling holes with a diameter of 1.32mm and a center distance of 3.2mm. The nozzle is at least 200mm from the bottom of the test chamber and at least 300mm from the wall of any chamber (2) Flow meter: air flow meter: 150L/min, propane flow meter: 8L/min (3) Blowtorch control system composition: pressure regulator, piezoelectric igniter, flame extinguishing device, temperature control thermocouple, air source (user-supplied), regulating valve, ignition device, gas pipeline, flow meter, venturi mixer, ball valve, air pipeline, compressed air bottle (user-supplied) (4) Timer: 0~99.99s/m/h arbitrarily set (5) Ignition device: automatic ignition (6) Temperature controller: composed of two temperature monitoring parts, temperature range: 0~1000°C arbitrarily set. The flame that meets the test conditions is called out by the ratio of gas and air, and the temperature is displayed in real time on the touch screen 4. Line load: (1) Test transformer: three-phase 6kv (2) Test voltage: 0.6/1.0kV (3) Test current: standard requirements 0.25A