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AmpSize

架空线净距查询

查阅架空导线净距和间距。

Reads AS/NZS 3000:2018. Tables checked 26 Sept 2026.

输入

使用默认输入值的示例计算。

架空导体类型
中性线屏蔽电缆
支架间跨距
20 m

支架处间距

0.3m

车辆通行区域上方
4.6m
距墙等的水平净距
1m
游泳池上方
3m

此结果仅供设计参考。请对照现行标准进行核验。

计算步骤

  1. 支撑处导体之间的间距结果0.3m

    AS/NZS 3000:2018 Table 3.10

  2. 车辆通行区域上方4.6m

    AS/NZS 3000:2018 Table 3.8

  3. 车辆不通行区域上方3m

    AS/NZS 3000:2018 Table 3.8

  4. 用于交通或休闲的屋顶上方2.7m

    AS/NZS 3000:2018 Table 3.8

  5. 其他屋顶及结构物上方0.5m

    AS/NZS 3000:2018 Table 3.8

  6. 距墙等的水平净距1m

    AS/NZS 3000:2018 Table 3.8

  7. 距晾衣绳、无线电及电视天线、平衡配重或拉线2m

    AS/NZS 3000:2018 Table 3.8

  8. 距电信线路0.6m

    AS/NZS 3000:2018 Table 3.8

  9. 游泳池上方3m

    AS/NZS 3000:2018 Table 3.8

  10. 位于使用帆船或灌溉管道的区域上方4.5m

    AS/NZS 3000:2018 Table 3.8

关于此计算器

How this is calculated

The tool looks up two things for an aerial conductor. Table 3.8 of AS/NZS 3000:2018 gives the minimum clearances. Table 3.10 gives the gap between conductors where they meet a support.

  1. Conductor type. You pick bare live conductors, insulated and unsheathed live conductors, or neutral-screened cable.
  2. Span. You enter the span in metres. Table 3.10 reads it.
  3. Spacing at supports. The tool reads the spacing from Table 3.10 for the type and span. This is the primary result.
  4. Vertical clearances. From Table 3.8 it gives the clearance over areas used by vehicles, areas not used by vehicles, and roofs.
  5. Horizontal clearances. From Table 3.8 it gives the clearance from walls, clothes lines, aerials and telecommunications lines.
  6. Special areas. It gives the clearance over swimming pools and over sailing craft or irrigation pipes. Some types are not permitted there.
StepTable or clauseWhat it decides
Spacing at supportsAS/NZS 3000 Table 3.10The gap between conductors
ClearancesTable 3.8Vertical and horizontal clearances by place

Worked example

Bare conductors over a 30 m span. The spacing at supports is 0.6 m. The clearance over areas used by vehicles is 5.5 m. The clearance from walls is 2 m. A bare conductor is not permitted above a swimming pool.

Limits

  • The clearance is not the whole requirement. Read Note 1 to Table 3.8 and Clause 3.12.3.
  • The tool does not apply Table 3.9. Check the span against Table 3.9 and Clause 3.12.4.
  • It does not check pole strength, sag or tension.
  • It does not cover supply authority overhead lines.

See also: Minimum conductor size, Underground cables and civil interfaces and the cable size calculator.

问题

结果仅供设计参考。请依据现行标准核对。

架空线净距工具会报告什么?

它报告两项内容。第一,依据 AS/NZS 3000:2018 Table 3.10,按您输入的档距给出支撑处的导线间距。第二,依据您所选导线类型,给出 Table 3.8 中的各项最小净距。所有数值以米计。Table 3.10 止于 60 m 档距,超出部分工具不给出间距。

本工具是否给出最大跨距?

否。工具不应用表 3.9。该限值请参阅 AS/NZS 3000:2018 的 Clause 3.12.4 和 Table 3.9。然后在此输入跨距,即可获得间距和净距。

表中列出的净距是否需要额外增加?

是的。表中数值并非全部要求。在确定高度之前,请阅读 AS/NZS 3000:2018 中 Table 3.8 的 Note 1 以及 Clause 3.12.3。每项结果均附有指向这些内容的注释。

为何结果显示不允许,而非给出距离?

因为 Table 3.8 在单元格中印有这些文字,AmpSize 予以照录。“不允许”并非零距离,也不是空白。它表示 Table 3.8 对该情况未给出数值。裸露带电导体对应两个此类单元格。

本工具读取的条款和表格

所有条款和表格,及各自的核验方式

表格最后核对于 26 Sept 2026。

这是否有用?

有问题,或数值看起来有误?联系我们。