UL910/NFPA262 Steiner horizontal tunnel furnace is mainly used for the flame retardant performance test of CMP grade wire and cable. It is mainly used for cables in horizontal subsystems that are directly laid in ventilation or forced ventilation without metal pipelines. The flame retardant test standard represents the most stringent flame retardant test standard for UL and even the entire wire and cable flame retardant test. Only the fluorine material sheath cable can pass the flame retardant test method. Due to the high decomposition temperature of fluoroplastics (greater than 400 degrees), the ignition point is also high (800 degrees or more), and it is not easy to burn when the fire is not strong, so it has better fire resistance than other organic materials.
The purpose of this test is to determine whether the flame-propagation and smoke-generating characteristics of cables without raceways are within the limits specified in the National Electrical Code (NEC). Cables having adequate fire-resistant and low-smoke-producing characteristics need not comply with general wiring methods when the cables are installed (without raceways) in environmental-air ducts, concealed hollow building spaces used as ducts for environmental air, and other environmental-air-handling spaces not specifically excluded (areas involving grease and flammable dust, vapor, and the like). This test method is essentially the same as the test method described in the Standard Method of Test for Fire and Smoke Characteristics of Wires and Cables, NFPA 262.
Application:It is mainly used for cables in horizontal subsystems that are directly laid in a ventilated or forced air environment without using metal pipelines.
Standards:NFPA 262 UL910
Dimension:21300 mm (L) x 1100 mm (D) x 2100 mm (H)
Electrical: 115 Volts AC 60Hz / 230 Volts AC 50Hz.
Electrical: 380 Volts AC, 20KW
Ambient Temperature: Operating 15°C to 35°C.
Gas: Methane and air compressor
Steiner Tunnel Test Apparatus.pdf
What does the Steiner tunnel test assess?
Steiner Tunnel tests measure the surface burning characteristics of interior finish materials and assemblies used in buildings, which is critical to understanding how materials react during a fire.