IEC 60754：Test on gases evolved during combustion of materials from cables
IEC 60754：Test on gases evolved during combustion of materials from cables
IEC 60754：Test on gases evolved during combustion of materials from cables- Test Standard：
IEC 60754：Test on gases evolved during combustion of materials from cables- part 1: Determination of the halogen acid gas content
IEC 60754：Test on gases evolved during combustion of materials from cables- Scope:
This part of IEC 60754 specifies the apparatus and procedure for the determination of the amout of halogen acid gas，other than hydrofluoric acid，evolved during the combustion of compounds based on halogenated polymers and compounds containing halogenated additives taken from electric or optical fibre cable constructions.
The method specified in this standard is intended for the testing of individual components used in a cable construction.The use of this method will enable the verification of requirements which are stated in the appropriate cable specification for individual componments of a cable construction .
IEC 60754：Test on gases evolved during combustion of materials from cables- Test method principle：
The material under test shall be heated in a stream of dry air and the gases shall be absorbed in 0.1M sodium hydroxide solution contained in wash bottles.The amount of halogen acid shall then be determined by acidifying the solution with nitric acid, adding a measured volume of 0.1m silver nitrate solution and back titrating the excess with 0.1M ammonium thiocyanate，using ferric ammonium sulphate as the indicator.
IEC 60754：Test on gases evolved during combustion of materials from cables-Realtive standard：
- BS 6387: Test method for resistance to fire for cables required to maintain circuit integrity under fire conditions
- BS 7846:Electric cables – 600/ 1000V armoured fire-resistant cables having thermosetting insulation and low emission of smoke and corrosive gases when affected by fire
- IEC 60331-23：Tests for electric cablesunder fire conditions--Circuit integrity--Part 23:Procedures and requirements--Electric data cables.
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