测试与标签周期
便携设备的复测周期和合格限值。
Reads AS/NZS 3760:2022. Tables checked 1 Oct 2026.
尝试一个工程 7
每项工作都会预填示例数值。请替换为您自己的数值。
- Tag a workshop angle grinderThe retest interval and the pass marks for a Class I tool in a workshop.
- Tag a kettle in an officeThe retest interval for a Class I appliance in an office kitchen.
- Tag a double-insulated drillThe interval and insulation limit for a Class II tool.
- Tag a hire extension leadThe interval for hire equipment.
- Test a portable RCDWhether a portable RCD that trips in 25 ms passes.
- Tag cleaning equipmentThe interval for commercial cleaning equipment.
- Check a leakage readingWhether 3 mA of leakage passes on a Class I heater.
输入
使用默认输入值的示例计算。
- 环境
- 1 · 工厂、车间、制造、装配、维护
- 设备
- Class I 设备
- RCD
- 无 RCD
- 检查接地连续性
- 是
- 实测接地电阻
- 0.4 Ω
- 检查绝缘电阻
- 是
- 实测绝缘电阻
- 25 MΩ
- 检查泄漏电流
- 否
- 检查 RCD 跳闸时间
- 否
复测间隔
6months
- 记录保存
- 7 年
- 接地连续性
- 0.4 对比 1
- 绝缘电阻
- 25 对比 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
- 复测间隔结果6months
AS/NZS 3760:2022 Table 2.4
- 接地连续性限值1Ω
AS/NZS 3760:2022 Cl 2.4.3.1
- 绝缘电阻限值1MΩ
AS/NZS 3760:2022 Table 2.2
- 漏电流限值5mA
AS/NZS 3760:2022 Table 2.1
- RCD 动作时间限值300ms
AS/NZS 3760:2022 Table 2.3
- RCD 动作时间限值，永久接线并配外部计时300ms
AS/NZS 3760:2022 Cl 2.4.3.4
- 记录保存7
AS/NZS 3760:2022 Cl 2.6.2
关于此计算器
How this is calculated
The tool gives the retest interval for portable electrical equipment. It checks test readings against the limits of AS/NZS 3760:2022. It does not print a tag.
- Interval. You pick the environment, from 1 to 8. The tool reads the retest interval for that environment and the equipment class from Table 2.4.
- Earth continuity. For Class I equipment, the tool reads the earth continuity limit from Cl 2.4.3.1 and compares your reading.
- Insulation resistance. It reads the minimum insulation resistance for the equipment from Table 2.2. Your reading must not be lower.
- Leakage current. Table 2.1 gives the leakage limit. The tool checks it only when you enter a reading.
- RCD trip time. Table 2.3 gives the trip time limit for a portable or fixed RCD. A permanently wired RCD with external timing uses Cl 2.4.3.4.
- Records. Cl 2.6.2 sets how long you keep the test record. The tool states that period.
| Step | Table or clause | What it decides |
|---|---|---|
| Interval | AS/NZS 3760:2022 Table 2.4 | How often you retest |
| Earth continuity | Cl 2.4.3.1 | The highest resistance that passes |
| Insulation resistance | Table 2.2 | The lowest resistance that passes |
| Leakage current | Table 2.1 | The highest leakage that passes |
| RCD trip time | Table 2.3 and Cl 2.4.3.4 | The slowest trip that passes |
| Records | Cl 2.6.2 | How long you keep the record |
Worked example
- Class I equipment in environment 2. Environment 2 covers flexing cord, abuse or a hostile place. The retest interval is 12 months. The tool keeps the record for 7 years. An earth reading of 0.4 Ω passes against a limit of 1 Ω. An insulation reading of 25 MΩ passes against 1 MΩ.
Limits
The tool reports the interval and compares the readings you type. It does not run a test. It does not print a tag. Cl 2.5.2.1 says what a tag must carry. Check the tag against that clause.
The tool gives one interval for one environment. Equipment used in more than one environment needs your own decision.
See also: Testing to Section 8, the test results checker and the assessment intervals tool.
问题
结果仅供设计参考。请依据现行标准核对。
测试与标签工具有什么作用？
工具报告您所选环境下的复测周期。它报告便携式或固定式 RCD 的试验按钮和动作时间周期。它给出漏电流、接地连续性和绝缘电阻的合格限值。然后检查您测得的数值。
设备多久须测试一次？
AS/NZS 3760:2022 Table 2.4 按环境规定检验周期。工厂、车间及商业清洁场所为 6 个月。软线经常弯曲，或场所环境恶劣、易被误用时为 12 个月。不适用以上情况的为 5 年，酒店住宿区域为 2 年。租赁设备为 3 个月。
合格限值是多少？
保护接地回路不得超过 1 ohm。绝缘电阻为 1 MΩ，I 类和 II 类相同。PRCD 功能接地为 0.05 MΩ，带护套加热元件为 0.01 MΩ。漏电流对 I 类为 5 mA，对 II 类为 1 mA。
RCD 必须满足什么动作时间？
Table 2.3 规定 30 mA 的 II 型装置为 300 ms，10 mA 的 I 型装置为 40 ms。Clause 2.4.3.4 对于永久接线于设备内部、并由外部计时的 RCD，给出相同的时间。2010 版在此处规定为 150 ms，因此现在介于 150 至 300 ms 之间的固定式 RCD 亦可通过。
工具采用哪个版本？
AS/NZS 3760:2022（含 Amendment 1 的印刷版）。限值和周期与 2010 版一致。Table 2.4 增加了二手设备，并指向 AS/NZS 5761。Clause 2.6.2 建议在保存记录的情况下为 7 年，并以监管机构的规定为准。
计算示例
- Builder's pole: supply, RCDs and cord lengthsA builder's pole for a house build, worked to AS/NZS 3012:2019. The supply it may take, the 30 mA RCDs, the Table 1 cord lengths and the test intervals.
- RCD tripping with no fault: add up the leakageAn RCD on a home office and kitchen trips with no fault found. Add up the standing leakage, check it against a third of 30 mA, and split it over two RCDs.
- Reading the wiring in an older houseA 1970s New Zealand house with yellow actives, a green earth and a black neutral. What each colour can be, what may stay, and how to sleeve new terminations.
背景
- Wire colours in NZ and Australia, old and newThe active, neutral and earth colours of AS/NZS 3000 Table 3.4, the NZ black neutral, older yellow and green conductors, and flexible cord colours.
- Construction site supplies: AS/NZS 3012What AS/NZS 3012:2019 asks of the electrical supply on a construction or demolition site, from the supply and the RCDs to cords, generators and testing.
- RCD leakage and nuisance trippingWhy an RCD trips with no fault. Where standing leakage comes from, the one-third and one-half points of Cl 2.6.2.1, class limits against measured figures.
本工具读取的条款和表格
- AS/NZS 3760:2022 Cl 2.4.3Tests on equipment in service
- AS/NZS 3760:2022 Cl 2.4.3.1Earth continuity limit in service
- AS/NZS 3760:2022 Cl 2.4.3.4RCD operating test
- AS/NZS 3760:2022 Cl 2.5.2.1Tag content
- AS/NZS 3760:2022 Cl 2.6.2Keeping test records
- AS/NZS 3760:2022 Table 2.1, 2.2, 2.3In-service test limits for electrical equipment
- AS/NZS 3760:2022 Table 2.4Indicative testing and inspection intervals for electrical equipment
表格最后核对于 1 Oct 2026。
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