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    • 10. 发明申请
    • FLAME RETARDANT ELECTRICAL CABLE
    • WO2019001715A1
    • 2019-01-03
    • PCT/EP2017/066154
    • 2017-06-29
    • PRYSMIAN S.P.A.
    • SIRIN, ZekeriyaBÜYÜK, Serdar
    • H01B7/295
    • A flame retardant cable (1) for low-voltage applications is disclosed which comprises at least one conductor (2) individually electrically insulated by a layer (3) of polymeric material, a fire-resistant tape (4) containing an inorganic material wrapped around said at least one individually electrically insulated conductor (2) and an multilayered outer sheath (5,6) having flame-retardant properties which encloses said at least one individually electrically insulated conductor (2) and said fire-resistant tape(4), wherein said multilayered outer sheath comprises an inner layer (5) and an outer layer(6), the inner layer (5) being made of a flame-retardant polymeric material having a limiting oxygen index (LOI) higher than the LOI of the flame-retardant polymeric material forming the outer layer (6) of said sheath. Such a cable has improved flame retardant performances, especially regarding a lower generation of droplets during burning, which render it capable of being certified in higher classes of the current international standards, for example of the European standard EN 50399:2011/A1 (2016).