AS 2374.1.2-2003 (2005) PDF

Full title and description

AS 2374.1.2:2003 — Power transformers — Part 1.2: Minimum Energy Performance Standard (MEPS) requirements for distribution transformers; amended by Amendment 1:2005 (commonly cited together as AS 2374.1.2-2003 (2005)). This document sets minimum energy-efficiency (MEPS) requirements for distribution transformers used on utility distribution networks.

Abstract

This standard specifies minimum and high efficiency performance levels and associated requirements for oil‑immersed and dry‑type distribution transformers (typical power ratings covered are from about 10 kVA up to 2500 kVA) intended for use on distribution networks (for example 11 kV and 22 kV systems). It is used to define MEPS for procurement, manufacture and regulatory programmes.

General information

• Status: Published 2003 and amended (Amdt 1) 2005; the document has been maintained and appears in revision/review records (see subsequent document history entries).
• Publication date: Original publication 2003; Amendment 1 published in 2005 (Amdt 1:2005; amendment date recorded 19 August 2005 in regulatory notes).
• Publisher: Standards Australia (Standards Australia Limited).
• ICS / categories: 29.180 — Transformers. Reactors (Electrical engineering / Power transformers).
• Edition / version: AS 2374.1.2:2003 with Amendment 1:2005 (often referenced as AS 2374.1.2‑2003 (2005)). Later reviews/reissues are recorded in the document history.
• Number of pages: Main Part (2003) typically listed at about 28 pages; the 2005 amendment is a short amendment document (commonly listed as 1–2 pages).

Scope

The standard applies to distribution transformers and defines mandatory minimum energy performance levels (MEPS) and related requirements for both oil‑immersed and dry‑type designs used in distribution networks. It addresses the range of transformer sizes normally used for distribution (approximately 10 kVA to 2500 kVA), and is intended to be referenced by manufacturers, purchasers and regulators when establishing allowable loss/efficiency limits and classification of efficiency performance. The standard has been used as the basis for MEPS regulations and procurement specifications in Australia.

Key topics and requirements

• Definition of MEPS levels: minimum power efficiency levels and optional higher "high efficiency" classes for distribution transformers.
• Applicability to oil‑immersed and dry‑type distribution transformers across a specified kVA range (typical 10–2500 kVA).
• Reference to test procedures and measurement methods (alignment with common transformer testing practices and IEC/AS series test methods).
• Marking/identification and documentation requirements to demonstrate compliance with MEPS where required by procurement or regulation.
• Amendment history: the 2005 amendment (Amdt 1) modifies and clarifies parts of the 2003 text and is incorporated in the published consolidated edition.

Typical use and users

Primary users are transformer manufacturers, electrical utilities and network operators, procurement/specification engineers, test laboratories, energy efficiency policy makers and regulators. The standard is used to set procurement minimums, to certify product compliance with national MEPS programmes, and to inform design choices that reduce transformer losses and improve network efficiency.

Related standards

Commonly referenced complementary documents include the broader AS 2374 series (power transformers), IEC/EN power transformer standards (for example IEC 60076 series) and related national MEPS/regulatory documents. National energy efficiency determinations and procurement regulations frequently cite AS 2374.1.2 when defining allowable transformer losses.

Keywords

distribution transformer; power transformer; MEPS; minimum energy performance standard; energy efficiency; transformer losses; oil‑immersed transformer; dry‑type transformer; Standards Australia.

FAQ

Q: What is this standard?

A: AS 2374.1.2:2003 (with Amendment 1:2005) is the part of the AS 2374 series that defines Minimum Energy Performance Standards (MEPS) requirements for distribution transformers used on electrical distribution networks.

Q: What does it cover?

A: It covers minimum and higher efficiency performance criteria for oil‑immersed and dry‑type distribution transformers (typical rating range ~10 kVA to 2500 kVA), associated marking/documentation and references to relevant test methods. It is intended to be used for procurement, manufacturing guidance and regulatory MEPS programmes.

Q: Who typically uses it?

A: Transformer manufacturers, electrical utilities and network operators, specification and procurement engineers, test houses, and government/regulatory bodies implementing energy efficiency rules or MEPS.

Q: Is it current or superseded?

A: The published core document date is 2003 with an amendment in 2005. The standard has recorded maintenance/review activity (document history entries and revised editions/reviews are listed in catalogues); users should check Standards Australia or their national standards body for the latest status or any more recent revisions or reissues before relying on it for compliance.

Q: Is it part of a series?

A: Yes — it is Part 1.2 of the AS 2374 series (Power transformers). Other parts of AS 2374 cover general requirements, testing and other transformer types and topics.

Q: What are the key keywords?

A: Distribution transformer, power transformer, MEPS, efficiency, transformer losses, oil‑immersed, dry‑type, Standards Australia.