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UL Certified Fireproof Power Cord
- May 27, 2018 -

This is the most demanding power cord (UL) in the UL fire protection standard. The applicable safety standard is UL910. The experiment stipulates that a number of samples shall be laid on the horizontal air duct of the device and burned with 87.9 KW gas Bunsen burner (300,000 BTU/Hr). 20 minutes. The pass criteria is that the flame must not extend beyond 5 feet from the flame front of the Bunsen burner. The peak value of the optical density is 0.5 at the maximum, and the maximum value of the average density is 0.15.

This type of CMP power cord is usually installed in an air return pressurization system used in ventilation ducts or air handling equipment and is approved by Canada and the United States. FEP/PLENUM materials that meet the UL910 standard have better flame retardancy than low-smoke halogen-free materials that comply with IEC60332-1 and IEC 60332-3 standards, and have low smoke concentrations.

This is a commercial grade power line (RiserCable) in the UL standard. The applicable safety standard is UL1666. The experiment requires laying multiple samples on a simulated vertical shaft, using the specified 154.5KW gas Bunsen burner (527,500 BTU/Hr) for 30 minutes. . The pass criteria is that the flame cannot spread to the upper part of a 12-foot-high room. The trunk-level power line has no smoke concentration specification and is generally used for floor vertical and horizontal wiring.

This is a general-purpose commercial power cord of the UL standard (GeneralPurposeCable). The applicable safety standard is UL 1581. The experiment specifies that a plurality of specimens shall be laid on a vertical stand 8 feet high and burned with a prescribed 20KW band torch (70,000 BTU/Hr). 20 minutes. The pass criteria is that the flame should not spread to the upper end of the power cord and extinguish itself. UL1581 is similar to IEC60332-3C except that the number of power cables laid is different. Commercial grade power cords do not have a smoke concentration specification and are generally applied only to horizontal cabling on the same floor and should not be used for vertical cabling on floors.

This is a general purpose power cord in the UL standard (GeneralPurposeCable). The applicable safety standard is UL 1581. Commercial and general-grade test conditions are similar. They are also approved for use in Canada and the United States. General-purpose power cords do not have a smoke concentration specification. They are generally applied only to horizontal cabling on the same floor and should not be used for vertical cabling on floors.

This is a UL-restricted residential power cord (Restricted Cable). The applicable safety standard is UL 1581. The VW-1 test specifies that the sample is held vertically. The test torch is used to burn (30,000 TU/Hr) for 15 seconds and then stopped. Second, repeat 5 times.

Passage criteria for the remaining flame can not exceed 60 seconds, the sample can not be burned more than 25%, the bottom of the surgical cotton can not be ignited by falling objects. UL1581-VW-1 is similar to IEC60332-1, except that the burning time is different. This grade also has no smoke or toxicity specifications and is used only in home or small office systems where a single power cord is laid. Such power cords should not be used in bundles and must be sleeved.

This is a specification for the release concentration of hydrogen chloride (HCL) in the IEC and BS standards. Chlorine, Chlorine, Bromine, Iodine, and Astatine, which are highly volatile elements, are highly toxic. The experiment stipulates that when the combustion furnace is preheated to 800°C, a 1.0 g sample is pushed into the furnace and HCL is dissolved in water using the gas discharge rate to determine the halogen acid content of the aqueous solution.

If the power cord material burns when the amount of halogenated acid (HCL) is less than 5mg/g, it can be called halogen-free power cord (LSOH). If the amount of halogenated acid (HCL) is greater than 5mg/g and less than 15mg/g, It can be called Low Halogen Power Line (LSF). It is worth noting that the IEC 60754-1 method cannot be used to determine the material with an HCL content of less than 5 mg/g, ie, it cannot be judged whether it is "halogen-free". Need to determine whether complete halogen free can be measured by IEC 60754-2 method