IEC 62059-31-1-2008 PDF

Full title and description

St IEC 62059-31-1-2008 — Electricity metering equipment — Dependability — Part 31-1: Accelerated reliability testing — Elevated temperature and humidity. This standard specifies a quantitative accelerated life-test method that uses elevated, constant temperature and humidity (with consideration of voltage and current variation) to estimate product life characteristics and dependability of energy metering equipment prior to and during serial production.

Abstract

IEC 62059-31-1:2008 provides procedures for conducting accelerated environmental reliability tests on electricity metering equipment by applying elevated temperature and humidity to accelerate ageing. It describes life‑stress modelling, statistical analysis (including Weibull methods), sample selection, termination criteria, failure classification and reporting so test results can be extrapolated to normal-use conditions with confidence limits. The published edition includes Corrigendum 1 (December 2008).

General information

• Status: Published and active; adopted as EN/ national variants; currently under revision work (IEC project to develop Edition 2 began in 2024).
• Publication date: 21 October 2008 (IEC edition 1.0); Corrigendum 1 published 9 December 2008.
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 17.220.20; 91.140.50 (measurement of electrical quantities; electricity supply systems / metering).
• Edition / version: Edition 1.0 (2008) with Corrigendum 1 (2008).
• Number of pages: 174 (IEC publication record).

Scope

This part of IEC 62059 applies to all types of electricity metering equipment used for energy measurement, tariff and load control within the scope of IEC TC 13. It gives a method for accelerated reliability testing that uses elevated temperature and humidity to accelerate failure mechanisms, and provides procedures and statistical models for extrapolating accelerated-test results to normal-use conditions. The method may be used for life estimation, design comparison and production monitoring.

Key topics and requirements

• Accelerated life-test method using elevated constant temperature and humidity to produce time‑to‑failure data for extrapolation.
• Life–stress modelling and calculation of acceleration factors (includes guidance on modelling temperature/humidity and electrical stress effects).
• Use of the Weibull distribution for modelling failure times, parameter estimation and confidence limits.
• Statistical procedures: ranking of time-to-failure data, reliability/unreliability estimates, confidence bounds, and minimum test duration calculations.
• Test setup and operation: sample selection, stress-level selection, termination criteria for maximum-stress tests, and data collection (failures and repairs).
• Failure classification and recommended presentation of results, plus informative and normative annexes with worked examples.

Typical use and users

Meter manufacturers, reliability engineers, test laboratories, utilities, certification bodies and QA/R&D teams use this standard to design and run accelerated environmental reliability tests, to estimate product lifetime characteristics, to compare designs, and to verify production batches. It is used both for pre‑production validation and ongoing reliability monitoring.

Related standards

IEC 62059‑31‑1 is part of the IEC 62059 series on metering equipment dependability and aligns with related documents such as IEC 62059‑32‑1 (durability / stability of metrological characteristics by elevated temperature), IEC 62059‑41, IEC 60300 series (reliability test conditions), IEC 61649 (Weibull analysis) and other dependability/terminology standards. It is commonly issued as EN/ national adoptions (EN 62059‑31‑1:2008 and equivalent national versions).

Keywords

Accelerated reliability testing; elevated temperature; humidity; electricity metering equipment; dependability; life‑stress model; Weibull analysis; life estimation; IEC TC 13.

FAQ

Q: What is this standard?

A: IEC 62059‑31‑1:2008 is an international standard that specifies an accelerated reliability test method (elevated temperature and humidity) for electricity metering equipment to estimate life characteristics and dependability.

Q: What does it cover?

A: It covers the test method, life–stress modelling, statistical analysis (including Weibull methods), sample selection, failure classification and reporting, and annexes with worked examples to enable extrapolation of accelerated‑test results to normal‑use conditions.

Q: Who typically uses it?

A: Meter manufacturers, reliability engineers, independent test laboratories, utilities, certification bodies and quality/R&D teams use the standard for design validation, life estimation and production monitoring of electricity meters.

Q: Is it current or superseded?

A: The 2008 edition (with Corrigendum 1, 2008) remains a published and adopted standard with a stability indication from the IEC record; a revision project (Edition 2) was initiated in 2024, so an updated edition is in development. Users should check national adoption status and the IEC project timetable for the publication of Edition 2 if they need the very latest text.

Q: Is it part of a series?

A: Yes — it is Part 31‑1 of the IEC 62059 dependability series for electricity metering equipment; related parts (for example Part 32‑1) address other dependability/durability test methods and metrological stability.

Q: What are the key keywords?

A: Accelerated testing, temperature, humidity, dependability, electricity meter, life‑stress model, Weibull, reliability engineering.