Skip to main content

AS/NZS 3760:2022 In-service safety inspection and testing of electrical equipment and RCDs

Standards Australia/Standards New Zealand

Version:  Sixth Edition 2022.  (Current)
error_outline
You are currently viewing a preview version of this resource. Sign in or subscribe for full access.
Publication date
19-12-2022
Pages
58
Current status
Current
Document Number
3760
Description

In-service testing is a necessary part of any safety programme to help ensure the safety of persons using electrical equipment in the workplace. This standard specifies in-service safety inspection and testing protocols and criteria that satisfy these obligations, and provides a cost-effective approach to safety without jeopardizing personnel safety or involving excessive equipment downtime.

Note: In-service testing and inspection deals with the safety of electrical equipment and not just the electrical safety.

The philosophy of the document is to provide an inspection and testing regime capable of implementation with only simple instrumentation, and performed by a person not necessarily having formal qualifications or registration, but who has the necessary practical and theoretical skills, acquired through training, qualification, experience or a combination of these, to correctly undertake the tasks prescribed by this standard.

Words in bold in the text are defined in 1.4. When a definition concerns an adjective, the adjective and associated noun are also in bold. 

Edition 1 AS 3760:1990. Edition 2 AS/NZS 3760:1996. Edition 3 AS/NZS 3760:2000. Edition 4 AS/NZS 3760:2001. Edition 5 AS/NZS 3760:2003. Edition 6 AS/NZS 3760:2010. Reissued incorporating Amendment No. 1 (April 2011). Reissued incorporating Amendment No. 2 (December 2012)

AS/NZS 3760:2022 was prepared by the Joint Standards Australia/Standards New Zealand Committee EL 036 – In-service testing of electrical equipment to supersede AS/NZS 3760:2010 and its Amendment No. 1 (2011) and Amendment No. 2 (2012) on the 24th June 2023.This edition has undergone a complete revision. Edition 1 AS 3760:1990. Edition 2 AS/NZS 3760:1996. Edition 3 AS/NZS 3760:2000. Edition 4 AS/NZS 3760:2001. Edition 5 AS/NZS 3760:2003. Edition 6 AS/NZS 3760:2010. Edition 7 AS/NZS 3760:2022. Reissued incorporating Amendment No 1 (December 2022).

Scope

This standard specifies procedures for the safety inspection and testing of low voltage single phase and polyphase electrical equipment, connected to an electrical supply by a flexible cord or connecting device, and that:

1. Is new equipment placed into service for the first time;
2. Is already in-service;
3. Has been serviced or repaired;
4. Is returning to service from a second-hand sale; or
5. Is available for hire.

This standard also specifies procedures for the safety inspection and testing of:

i. In Australia, residual current devices (RCDs) installed in the electrical installation;
ii. Portable inverters that generate or produce low voltage.

Typical examples of equipment covered by this standard are:

A. Portable equipment, hand-held equipment and stationary equipment, designed for connection to the low voltage supply by a supply cord, an appliance inlet or pins for insertion into a socket-outlet:
B. Cord sets, cord extension sets and portable outlet devices;
C. Portable residual current devices (PRCD), outgoing assemblies for construction sites(ACS); portable socket-outlet assemblies (PSOA), outlet boxes;
D. Flexible cords connected to fixed equipment in hostile environments;
E. Portable power supplies (includes power adaptor/plug-pack, both of the safety isolating transformer and switch-mode type);
F. Battery chargers, including those for commercial or industrial use;
G. Portable and transportable heavy duty tools such as high-pressure washers and concrete grinders.

Contents:

Referenced Documents
Foreword
Outcome Statement
Section 1: Scope and General
Section 2: Inspection And Tests
Appendix A: Background
Appendix B: Guidelines On The Electrical Knowledge Of A Competent Person
Appendix C: Polarity For Cord Sets And Cord Extension Sets
Appendix D: Test Of Earthing Continuity
Appendix E: Insulation Testing
Appendix F: Insulation Resistance Testing Of Portable Isolating Transformers
Appendix G: Insulation Resistance Testing Of A Power Supply
Appendix H: Test For The Operating Time Of Residual Current Devices (RCDs)
Appendix J: Arc Welders
Appendix K: Regulatory Application Of This Standard
 
Tables:

2.1: Leakage Current Limits
2.2: Insulation Resistance Limits
2.3: Maximum Tripping Times
2.4: Indicative Testing And Inspection Intervals For Electrical Equipment
C.1.1: Conductor colours For Flexible Cords
C.1.2: Colour schemes of conductor insulation in modern sheathed flexible cords
H.1: Tripping time accuracy
 
Figures:

C.1: Cord Set
C.2: Cord Extension Set
D.1: Measurement Of The Earth Continuity Resistance Between Accessible Earthed Metal Parts And The Earth Pin Of The Mains Plug
D.2: Measurement Of The Earth Continuity Resistance Between The Mains Plug Earth Pin And The Earthing Aperture Contacts Of An EPOD
E.1: Leakage Current Test Setup Using Differential Test Method For Class Il Single-Phase Equipment
E.2:Leakage Current Test Setup Using Differential Test Method For Class II Three-Phase Equipment
E.3: Measurement Of The Insulation Resistance Between Live Supply Conductors And Accessible Earthed Metal Parts Of Typical Class I Equipment
E.4: Measurement Of The Insulation Resistance Between Live Supply Conductors And Accessible Metal Parts Of A Typical Class I Equipment
E.5: Measurement Of The Insulation Resistance Of An EPOD
F.1: Measurement Of The Insulation Resistance Between Live Supply Conductors To A Portable Isolating Transformer And Accessible Earthed Parts For Class I Isolating Transformers Or Accessible Metal Parts For Class I Isolating Transformers
F.2: Measurement Of The Insulation Resistance Between Live Supply Conductors And The Portable Isolating Transformer Output (Secondary) Winding
F.3: Measurement Of The Insulation Resistance Between A Portable Isolating Transformer (Secondary) Winding And Accessible Earthed Parts For Class I Isolating Transformers
G.1: Measurement Of The Insulation Resistance Of A Power Supply

Committee

EL-036 In-service Testing of Electrical Equipment.

EL-036

Better Regulation Division - SafeWork NSW; Better Regulation Division– NSW Fair Trading; Building Services Contractors of NZ; Consumer Electronics Suppliers Association; Electrical Regulatory Authorities Council; Electrical Workers Registration Board; ECANZ - Master Electricians NZ; Hire and Rental Industry Association of Australia; Hire Industry Association of NZ; HousingIndustry Association; National Electrical and Communications Association; New Zealand Electric Fence Energiser Manufacturers’ Standards Working Group; Standards Australia (Co-opted); Standards New Zealand (Co-opted); WorkSafe New Zealand.

ISBN
978 1 76113 874 4
Attribution
Standards Australia/Standards New Zealand 2022.
Licence
© All Rights Reserved
NSW
VIC
QLD
NT
WA
ACT
TAS
SA
Sector
Residential
Civil
Commercial
Industrial
AS/NZS 3760:2022 In-service safety inspection and testing of electrical equipment and RCDs 2022 cover