Rolling stock cable

Wires & Cables All information given are in good faith.Siechem's liability is only to replace the defective portion of cables provided the same is mutually established as manufacturing defects within the guarantee period as agreed in writing and Siechem shall not be liable for any compensation or damages. Siechem reserves the right to revise any of the above specifications without prior intimation. Subject to Chennai Jurisdiction. 69 EN 50266-2-4 /EN 50305 (9.1.1) / EN 50305 (9.1.2) ( Flame Test on Bunched Wires/Cables ) This test describes a method of type approval testing to define the ability of bunched cables to resist fire propagation. In this test, a cable specimen, consisting of number of lengths of cables are fixed to a vertical ladder tray where they are applied with a flame from a gas burner for a specified times under controlled air flow. Different categories (A, B, C & D) are defined and distinguished by test duration and the volume of non metallic material of the sample under test. The cable specimen is deemed to have met the requirements of the standard if, after burning has ceased, the extent of charred or affected portion does not reach a height exceeding the bottom edge of the burner. EN 50264-1 Emission Of Halogens This specifies a test for determination of the amount of halogen acid gas, other than the hydrofluoric acid, evolved during combustion of compound based on halogenated polymers and compounds containing halogenated additives taken from cable constructions. Halogen includes Fluorine, Chlorine, Bromine, Iodine and Astatine. All these elements are toxic by its nature. The material is considered to be halogen free if no green to blue-green flame discolouration occurs. The chlorine and the bromine would cause such a discolouration, however the existence of fluorine cannot be proven like that. Halogen Test 0 In this test, when the burner is heated to 800 C, 1g sample is placed inside and the HCl is absorbed into water inside the chamber fed with air flow. The water is then tested with its acidity. If the hydrochloric acid yield is less than 5%, the cable is categorized as LSZH. If the hydrochloric acid yield lies between 5% to 15%, the cable is categorized as LSF.