Test and tag intervals
Mga retest interval at pass limit para sa portable gear.
Reads AS/NZS 3760:2022. Tables checked 1 Oct 2026.
Subukan ang isang job 7
Nilalagyan ng halimbawang value ang bawat job. Palitan ang mga ito ng sarili mong value.
- 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.
Mga input
Worked example gamit ang mga default na input.
- Environment
- 1 · Mga pabrika, workshop, paggawa, assembly, maintenance
- Kagamitan
- Class I equipment
- RCD
- Walang RCD
- Suriin ang earth continuity
- Oo
- Sinukat na earth resistance
- 0.4 Ω
- Suriin ang insulation resistance
- Oo
- Sinukat na insulation resistance
- 25 MΩ
- Suriin ang leakage current
- Hindi
- Suriin ang tripping time ng RCD
- Hindi
Agwat ng retest
6months
- Pagtatago ng talaan
- 7 taon
- Earth continuity
- 0.4 laban sa 1
- Insulation resistance
- 25 laban sa 1
Design aid lang ang resultang ito. I-verify ito laban sa kasalukuyang standard.
Mga hakbang ng kalkulasyon
- Agwat ng retestResulta6months
AS/NZS 3760:2022 Table 2.4
- Limit ng earth continuity1Ω
AS/NZS 3760:2022 Cl 2.4.3.1
- Limit ng insulation resistance1MΩ
AS/NZS 3760:2022 Table 2.2
- Limit ng leakage current5mA
AS/NZS 3760:2022 Table 2.1
- Limit ng oras ng trip ng RCD300ms
AS/NZS 3760:2022 Table 2.3
- Limit ng oras ng trip ng RCD, permanenteng nakakabit na may external timing300ms
AS/NZS 3760:2022 Cl 2.4.3.4
- Pagtatago ng talaan7
AS/NZS 3760:2022 Cl 2.6.2
Tungkol sa calculator na ito
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.
Mga tanong
Design aid ang resulta. I-verify ito laban sa kasalukuyang standard.
Ano ang ginagawa ng Test and Tag tool?
Iniuulat ng tool ang retest interval para sa environment na pipiliin mo. Iniuulat nito ang push-button at operating time interval para sa portable o fixed RCD. Ibinibigay nito ang pass limit para sa leakage current, earth continuity at insulation resistance. Pagkatapos, sinusuri nito ang mga value na sinukat mo.
Gaano kadalas dapat subukan ang equipment?
Itinatakda ng AS/NZS 3760:2022 Table 2.4 ang interval ayon sa environment. Nagbibigay ito ng 6 na buwan para sa factories, workshops at commercial cleaning. Nagbibigay ito ng 12 buwan kapag gumagalaw ang cord, o kapag malupit o bukas sa pang-aabuso ang lugar. Nagbibigay ito ng 5 taon kapag walang nalalapat, at 2 taon sa hotel residential areas. 3 buwan ang hire equipment.
Ano ang mga pass limit?
Hindi dapat lumampas sa 1 ohm ang protective earth circuit. 1 megohm ang insulation resistance, pareho para sa Class I at Class II. 0.05 megohm ito para sa PRCD functional earth, at 0.01 megohm para sa sheathed heating element. 5 mA ang leakage para sa Class I at 1 mA para sa Class II.
Anong trip time ang dapat tugunan ng RCD?
Nagbibigay ang Table 2.3 ng 300 ms para sa 30 mA Type II device at 40 ms para sa 10 mA Type I device. Ibinibigay ng Clause 2.4.3.4 ang parehong oras para sa RCD na permanenteng nakakabit sa loob ng equipment at tinatimingan mula sa labas. Ang 2010 edition ay nagbigay ng 150 ms doon, kaya ang fixed RCD na nasa pagitan ng 150 at 300 ms ay pumapasa na ngayon.
Aling edition ang ginagamit ng tool?
AS/NZS 3760:2022, sa printing nito na may Amendment 1. Tugma ang limits at intervals sa 2010 edition. Dinadagdagan ng Table 2.4 ang second-hand equipment, na tumuturo sa AS/NZS 5761. Inirerekomenda ng Clause 2.6.2 ang 7 taon kapag may nakatalang records, at ipinauubaya ito sa regulator.
Mga worked example
- 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.
Background
- 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.
Mga clause at table na binabasa ng tool na ito
- 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
Bawat clause at table, kasama kung paano ito na-verify
Huling na-check ang mga table noong 1 Oct 2026.
Mga kaugnay na tool
- Construction site supply calculatorSupply, RCD and test rules for a construction site.AS/NZS 3012
- RCD standing leakage budgetHow much standing leakage one RCD can carry.AS/NZS 3000AS/NZS 3760
- Test results checkerCheck measured test results against Section 8 limits.AS/NZS 3000AS/NZS 3017Electricity (Safety) Regulations 2010
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