火灾报警布线查询
查阅火灾报警系统的电缆和回路规定。
Reads NZS 4512:2010. Tables checked 26 Sept 2026.
尝试一个工程 4
每项工作都会预填示例数值。请替换为您自己的数值。
- Choose the cable for a sounder circuitThe minimum conductor size for a fire alarm alerting device circuit.
- Choose the cable for a detector circuitThe minimum conductor for a four‑core detector circuit.
- Choose the cable for a transmission pathThe fire rating a transmission path needs.
- Choose the cable for staged evacuationThe cable for a staged evacuation circuit.
输入
使用默认输入值的示例计算。
- 回路类型
- 探测器或手动报警点回路
- 电缆内的线芯
- 2
最小导体规格
0.75mm²
- 需要绞合导体
- 是
- 绝缘电阻高于
- 5MΩ
- 防火等级
- 本条款未规定
- Clause
- 402.1
此结果仅供设计参考。请对照现行标准进行核验。
计算步骤
- 适用条款402.1
NZS 4512:2010 Cl 402.2
- 电缆中的芯线2
NZS 4512:2010 Cl 402.1
- 最小导体规格结果0.75mm²
NZS 4512:2010 Cl 402.1
- 需要绞合导体是
NZS 4512:2010 Cl 402.1
- 绞合适用于以下规格1mm²
NZS 4512:2010 Cl 402.1
- 绝缘电阻高于5MΩ
NZS 4512:2010 Cl 402.2
- 耐火等级本条款未规定
NZS 4512:2010 Cl 402.2
关于此计算器
How this is calculated
The tool looks up what a fire alarm circuit needs from NZS 4512:2010 Clauses 402.1 and 402.2. It gives the conductor size, the stranding, the insulation resistance and the fire rating.
- Circuit. You pick the circuit: detector, alerting device, transmission, staged evacuation, data link or mains supply.
- Clause. The tool picks the clause. Cl 402.1 covers detector and alerting device circuits. Cl 402.2 covers the rest.
- Cores. You enter the number of cores in the cable. The size rule in Cl 402.1 reads it.
- Conductor size. The tool gives the minimum conductor size and says whether it must be stranded.
- Insulation resistance. From Cl 402.2 it gives the minimum insulation resistance.
- Fire rating. It gives the fire rating, or says that this clause does not set one.
| Step | Table or clause | What it decides |
|---|---|---|
| Conductor size and stranding | NZS 4512 Cl 402.1 | The smallest conductor and its construction |
| Insulation resistance | Cl 402.2 | The minimum test result |
| Fire rating | Cl 402.2 | The rating, where the clause sets one |
Worked example
A detector circuit in 2‑core cable. The minimum conductor size is 0.75 mm². The conductor must be stranded. The insulation resistance must be above 5 MΩ. This clause sets no fire rating.
Limits
- The tool reads Cl 402.1 and 402.2 only. Check the cable specification and the mechanical protection in Cl 402.1.
- Clause 402.2(g) is the other size driver. Read it in full.
- Check the earthing rules for zone circuit wiring in Cl 402.2(i).
- Check the separation and identification rules in Cl 402.2(k).
- The tool does not check voltage drop on the circuit.
- NZS 4512:2021 supersedes the 2010 edition this tool reads.
See also: Fire alarm battery, Detector spacing and the segregation checker.
问题
结果仅供设计参考。请依据现行标准核对。
火灾报警回路需要多大的电缆?
NZS 4512:2010 Clause 402.1 规定:两芯电缆每根导体 0.75 mm²;多于两芯的电缆每根导体 0.5 mm²。AmpSize 还报告同一条款中的 1 mm² 绞合阈值。电缆类型及其可接受的防护方式请阅读 Clause 402.1。
哪些火灾报警回路需要耐火电缆?
AmpSize 报告两种情况。Clause 402.2(m) 对于传输回路,依据 AS/NZS 3013 分类 WS11,规定 15 分钟完整性。Clause 402.2(r) 对于分级疏散布线,规定 WS51W。请完整阅读这两条款,因为每条均包含本工具未作检查的条件。
火灾报警系统是否需要独立的供电回路?
是的。Clause 402.2(f) 要求设置独立的分支回路并配置永久性标签。AmpSize 打印该条款规定的标签文字 FIRE ALARM。请阅读 Clause 402.2(f),了解分支回路的起点及标签应设置的位置。
预期的绝缘电阻是多少?
Clause 402.2(j) 规定判定标准为 5 MΩ 以上,AmpSize 会报告该数值。Clause 402.2(i) 和 Clause 402.2(k) 分别规定同一布线的接地和分隔要求。记录测试结果前,请阅读这三条。
本工具能否确认某装置合规?
否。AmpSize 针对所选回路,报告 NZS 4512:2010 Clauses 402.1 和 402.2 的相关数值。它仅供参考,不构成裁定。火灾报警装置须依照整套标准及布线规则进行检查。
本工具读取的条款和表格
- NZS 4512:2010 Cl 402.1Fire alarm cable
- NZS 4512:2010 Cl 402.2Fire alarm cable installation
- Cl 402Fire alarm cable and circuit requirements
表格最后核对于 26 Sept 2026。
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