AS 2374.1.2-2003 (R2016)

Specifies minimum power efficiency levels and high power efficiency levels for oil-immersed and dry-type distribution transformers, with power ratings from 10 kVA to 2500 kVA, intended to be used on 11 kV and 22 kV networks. It is expected that this Standard will be called into legislation by individual States and Territories mandating these requirements under Minimum Energy Performance Standard (MEPS) regulations.RECONFIRMATION NOTICETechnical Committee EL-008 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 25 September 2015.The following are represented on Technical Committee EL-008:Australian Chamber of Commerce and IndustryAustralian Industry GroupAustralian Institute of PetroleumElectricity Engineers Association (New Zealand)Energy Efficiency and Conservation Authority of New ZealandEnergy Networks AssociationEngineers AustraliaIndustry Training BodyRail Industry Safety and Standards Board

This standard applies to dry-type and oil-immersed type, three-phase and single-phasepower transformers with power ratings from 10 kVA to 2500 kVA and system highest voltage up to 24 kV. This standard does not apply to certain categories of special transformers such as—(a) transformers other than those on 11 or 22 kv networks;(b) instrument transformers;(c) auto transformers;(d) traction transformers mounted on rolling stock;(e) starting transformers;(f) testing transformers;(g) welding transformers;(h) three phase transformers with three or more windings per phase;(i) arc-furnace transformers;(j) earthing transformers;(k) rectifier or converter transformers;(l) uninterruptible power supply (ups) transformers;(m) transformers with an impedance less than 3% or more than 8%;(n) voltage regulating transformers;(o) transformers designed for frequencies other than 50 hertz;(p) gas-filled dry-type transformers; or(q) flameproof transformers.

First published as AS 2374.1.2-2003.
Reconfirmed 2016.