In-service safety inspection and testing of electrical equipment

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as aluminum foil) wrapped over the insulation.(2) Some hybrid constructions exist whereby a Class I item is totally encapsulated. By denyingaccess to earthed parts, a protective earth continuity test cannot be performed. In these casesonly an insulation test can be performed.G3 Protective earthingThe resistance to earth from protectively earthed parts in Class I equipment has to be low enoughto permit adequate fault current to flow to earth, thereby ensuring that the overcurrent protectiondevice in the final sub-circuit (that is, fixed wiring) opens quickly in the event of insulation failure.The protective earthing conductor also ensures that any leakage current from the live parts withinClass I equipment flows to earth via a low resistance path.G4 Insulation resistanceInsulation resistance testing is intended to confirm the integrity of the insulation between live mainsparts and accessible metal parts.Accordingly, equipment has its insulation resistance measured prior to commissioning, and atregular intervals during its service life to ensure that no degradation has occurred sincemanufacture, during transport, or over its service life.G5 Test equipmentThe equipment required to carry out the tests detailed in this Standard should be subject to routineverification at regular intervals to ensure it is working correctly and its accuracy is maintained.G6 DocumentationRecords of maintenance, including (but not limited to) tests, should be kept throughout the workinglife of the equipment. Such records are a useful management tool for reviewing the frequency ofinspection and test actions, and ensuring these actions have been carried out. It is recommendedthat such records be retained for not less than 7 years.Page 33
APPENDIX HREGULATORY APPLICATION OF THIS STANDARD(Informative)H1 GENERALRelevant regulatory authorities in the Australian States and Territories and in New Zealand mayrequire compliance with this Standard under their various regulatory instruments.The purpose of this appendix is to provide contact details of the relevant authorities which enforceregulations relating to the in-service inspection and testing of electrical equipment in each of theAustralian States and Territories and in New Zealand.This information is accurate at the time of publication of this Standard. Users are advised to consultthe relevant nominated regulatory authority for information current at the time of use.H2 REGULATORY AUTHORITIESNew South WalesWorkCover NSW92-100 Donnison Street, Gosford.Postal Address: Locked Bag 2906, Lisarow NSW 2252WorkCover assistance service, Phone: 13 10 50Website: www.workcover.nsw.gov.auVictoriaVictorian WorkCover AuthorityLevel 24, 222 Exhibition StMelbourne 3000WorkCover Advisory ServicePh (03) 9641 1555Fax (03) 9641 1222Website: www.workcover.vic.gov.auQueenslandStreet Address: Electrical Safety OfficeDepartment of Industrial RelationsLevel 6, Neville Bonner Building75 William StreetBrisbane Qld 4000Postal Address: GPO Box 69Brisbane Qld 4001Telephone: (07) 3237 0220Facsimile: (07) 3237 0229Page 34
Page 5 and 6: PUBLIC COMMENT DRAFTDR 3760Australi
Page 7 and 8: PUBLIC COMMENT DRAFTContentsCommitt
Page 9 and 10: PUBLIC COMMENT DRAFTREFERENCED DOCU
Page 11 and 12: PUBLIC COMMENT DRAFTFOREWORDIn-serv
Page 13 and 14: electrical installation and falls w
Page 15 and 16: protective earthing conductor in th
Page 17 and 18: 1.4.16 Live partsLive parts include
Page 19 and 20: NOTE —(1) Clear backed plugs and
Page 21 and 22: 2.3.3.2.1Where equipment contains,
Page 23 and 24: (b)2.4.2.2The test or inspection da
Page 25 and 26: PUBLIC COMMENT DRAFTInterval betwee
Page 27 and 28: Figure A1 - Measurement of the eart
Page 29 and 30: Insulation resistance tests shall b
Page 31 and 32: APPENDIX CINSULATION RESISTANCE TES
Page 33 and 34: Figure C3 - Measurement of the insu
Page 35 and 36: D3.2button only, and observing the
Page 37 and 38: APPENDIX FPOLARITY FOR CORD EXTENSI
Page 39: APPENDIX GBACKGROUND( I n f o r m a
Page 43 and 44: 66 The EsplanadeDarwin NT 0800Posta
Page 45 and 46: APPENDIX JGUIDELINES ON THE ELECTRI

In-service safety inspection and testing of electrical equipment

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