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Test procedures and regulatory standards for transformers and converters are published by Standards Australia. The following parts are relevant:
These standards can be purchased from SAI Global under licence from Standards Australia.
This test method involves testing a transformer/converter as a stand-alone unit with its input and output power measured using electrical power measurement equipment when driving incandescent halogen lamp(s).
The output of electronic converters can have a frequency of many kHz, thus a new high frequency power calibration technique was developed for this standard by the National Measurement Institute of Australia. This technique allows traceable calibration of digital wattmeters or power analysers to the international unit (Watt).
The standard also details the voluntary use of a performance marking system for energy efficiency, in roman numerals I to X.
Scope: this standard specifies Minimum Energy Performance Standards (MEPS) requirements for magnetic isolating transformers and electronic step-down converters with the following characteristics:
The standard does not cover safety requirements which are covered separately in AS/NZS 61347.1 and AS/NZS 61347.2.2. The standard applies to units used in Class III luminaires or SELV lighting systems with an output voltage not exceeding 50 V a.c.
The standard specifies MEPS in terms of minimum full load efficiency as set out on the MEPS page.
Additionally, it requires that the output voltage of any units rated between 50-70 W (inclusive) shall be more than 11.0 V and less than 12.8 V when measured under special load conditions with a 35 W lamp.
The standard also describes the required number of test samples and the statistical conditions for compliance.
This page last modified 02 February 2009
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