首页>
美国政府科技报告
>Proposed Rea Specification for Thermoplastic-Insulated, Thermoplastic Sheathed Cables Intended for Direct Burial Use in Telephone Systems or Rea Borrowers
【24h】
Proposed Rea Specification for Thermoplastic-Insulated, Thermoplastic Sheathed Cables Intended for Direct Burial Use in Telephone Systems or Rea Borrowers
This specification covers the requirements for telephone cable having solid copper conductors, insulated with polyethylene. The insulated conductors are twisted into pairs, the required number of pairs stranded into a cable core, and enclosed in an inner polyethylene sheath or jacket. A metallic shield is applied over the inner sheath, and the whole enclosed in a polyethylene outer sheath or jacket. (Author)
展开▼