olyolefins;Quality assurance;Quality control;Telephone cables;Underground【摘要】: This standard is intended to define polyolefin-insulated cables for insertion into local outdoor networks.This standard is applicable to polyolefin insulated and moisture barrier polyolefin sheathed telephone cables, filled or unfilled with copper conductors, and used as:a) Cables suitable for installation in ducts.b) Cables suitable for direct burial in the ground.c) Cables with integral suspension strand for aerial installations.This standard is in accordance with ITU-T Recommendations.This standard includes general design details and requirements for dimensions and other constructional details as well as mechanical, electrical and environmental characteristics for all types of low-frequency cables with polyolefin insulation (solid or cellular), filled or unfilled, and moisture barrier polyolefin sheath (with integral suspension strand).【中国标准分类号】: K13【国际标准分类号】: 33_120_20【页数】: 32P.;A4【正文语种】: 英语 

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