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
- 支撑处导体之间的间距结果0.3m
AS/NZS 3000:2018 Table 3.10
- 车辆通行区域上方4.6m
AS/NZS 3000:2018 Table 3.8
- 车辆不通行区域上方3m
AS/NZS 3000:2018 Table 3.8
- 用于交通或休闲的屋顶上方2.7m
AS/NZS 3000:2018 Table 3.8
- 其他屋顶及结构物上方0.5m
AS/NZS 3000:2018 Table 3.8
- 距墙等的水平净距1m
AS/NZS 3000:2018 Table 3.8
- 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
- 距电信线路0.6m
AS/NZS 3000:2018 Table 3.8
- 游泳池上方3m
AS/NZS 3000:2018 Table 3.8
- 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.
- Conductor type. You pick bare live conductors, insulated and unsheathed live conductors, or neutral-screened cable.
- Span. You enter the span in metres. Table 3.10 reads it.
- Spacing at supports. The tool reads the spacing from Table 3.10 for the type and span. This is the primary result.
- Vertical clearances. From Table 3.8 it gives the clearance over areas used by vehicles, areas not used by vehicles, and roofs.
- Horizontal clearances. From Table 3.8 it gives the clearance from walls, clothes lines, aerials and telecommunications lines.
- Special areas. It gives the clearance over swimming pools and over sailing craft or irrigation pipes. Some types are not permitted there.
| Step | Table or clause | What it decides |
|---|---|---|
| Spacing at supports | AS/NZS 3000 Table 3.10 | The gap between conductors |
| Clearances | Table 3.8 | Vertical 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
- AS/NZS 3000:2018 Cl 3.12.3Aerial conductor sag and sway
- AS/NZS 3000:2018 Table 3.9Aerial conductor spans
- AS/NZS 3000:2018 Table 3.8, 3.10Aerial conductor clearances and spacing at supports
表格最后核对于 26 Sept 2026。
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