| abstract |
The invention provides a halogen-free, flame-retardant insulating electrical wire or halogen-free, flame-retardant insulating tube having an insulating sheath in which insulation resistance, abrasion resistance, resistance to thermal deformation, and flame retardancy are highly balanced, and in particular, a halogen-free, flame-retardant insulating electrical in which the aforementioned characteristics are highly balanced, and which has hot water resistance high enough to pass the DC stability test required in the EN50306-2 standard for railroad car use. The insulating electrical wire or halogen-free, flame-retardant insulating tube has a conductor and a halogen-free insulating sheath sheathing the conductor, the insulating sheath and the flame-retardant insulating tube having a layer comprising a polyester resin composition in which a polyester elastomer contains 5-50 mass parts of a phosphinic acid metal salt and 1-10 mass parts of a polyfunctional monomer, per 100 mass parts of the resin component. |