Safety and inspection of electrical equipment revised Standard published AS NZS 3760


6 October 2010

A revised Standard for the safety inspection and testing of electrical equipment has recently been published.

'The revisions to AS/NZS 3760 will help to assure users that electrical equipment is safe when it has been tested and marked in accordance with this Standard,' says Derek Johns, Chairman of EL-036 In-service safety inspection and testing of electrical equipment.

In-service safety inspection and testing of electrical equipment AS/NZS 3760:2010 provides a process to reduce the risk of electrical shock to users of electrical equipment. The Standard covers electrical equipment that connects to the mains supply by a flexible cord and plug. AS/NZS 3760 is used by electricians and electrical contractors that inspect electrical equipment.

AS/NZS 3760 has been completely revised and the key changes to the Standard are as follows.

  • Requirements for medical electrical equipment have been clarified to reduce confusion between the use of AS/NZS 3760 and AS/NZS 3551:2004 Technical management programs for medical devices.
  • Table 4 has been reviewed to align with the Electricity (Safety) Regulations 2010. Changes have been made to some requirements, including allowing for the intervals between testing to be varied, based on a risk analysis.
  • Equipment with functional earthing has been identified – such equipment does not need an earth continuity test.
  • The Standard now includes information for leakage current tests on Class II single-phase and three-phase equipment, and leakage current test methodology for equipment that is normally immersed in water.
  • New information to test three phase residual current devices (RCDs) and electrical equipment has been added to improve user safety.

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