IEC 61156-4-2003 标准详情
- 标准号:IEC 61156-4-2003
- 中文标题:数字通信用对绞或星绞多芯对称电缆.第4部分:吊索.分规范
- 英文标题:multicore and symmetrical pair/quad cables for digital communications - part 4: riser cables - sectional specification
- 标准类别:国际电工委员会标准
- 发布日期:2003-04-24
COVERS INDIVIDUALLY UNSCREENED 20 PAIRS/10 QUADS OR MORE FOR VERTICAL SHAFTS OR VERTICALLY BETWEEN FLOORS. WHEN INSTALLED VERTICALLY EXTRA LENGTH REQUIREMENTS MAY BE APPLICABLE AND ARE DEFINED IN THE APPROPRIATE SPECIFICATIONS. THE CABLES MAY BE PROV
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