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<p>This paper proposes an approach to carry out step stress accelerated life testing of electronic type electric energy meters for estimating its reliability and life characteristics. In proposed method typical Indian environmental and usage conditions are considered for more realistic estimation of life characteristics. The recommended method uses step stress accelerated life testing method over generally used constant stress accelerated life testing methods of metering equipment. The new method aims to reduce test time as well as sample size besides obtaining realistic failures by accelerating one stress that is temperature and applying other potential stresses to resemble typical Indian field environment and operating conditions. The proposed method has been applied on an electronic type of electrical energy meter. The experimental results from laboratory testing are found to be simulating field failures appropriately in lesser time. These are highly desirable given the present day pressure on industry’s to shorten new product introduction time while obtaining realistic estimations. The recommended approach is quite simple in application and applicable to electronic types of electric energy metering equipment. The proposed method overcomes the limitations of accelerated life testing method outlined in International Electro-technical Commission (IEC) standard 62,059-31-1 for reliability testing of metering equipment. The major problem observed in implementation of the IEC standard is large sample size and long test time requirements, which restricts its application for reliability demonstration/estimation purposes. A new approach is designed keeping in mind requirement of electrical energy meter customers. These customers face the problem during selection of appropriate meter, which are mostly electronic these days. These meters are supposed to work 24&#xa0;h a day for a long life. The customers need an efficient and effective way of estimating life of meters. The proposed testing method helps in achieving desired results with an advantage of reducing sample size, cost, man-hour, test equipment use-age and material requirements, by assuring quick failures in lesser test time. With short launch time of product, it is the need of hour to produce test results in short span of time.</p>

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Reliability estimation of electric energy meters using step stress accelerated life testing

  • 期刊论文

  • 发表日期：

    2025年11月12日

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  • Neeraj Kumar Goyal,
  • Kuldeep Singh Taluja

摘要

This paper proposes an approach to carry out step stress accelerated life testing of electronic type electric energy meters for estimating its reliability and life characteristics. In proposed method typical Indian environmental and usage conditions are considered for more realistic estimation of life characteristics. The recommended method uses step stress accelerated life testing method over generally used constant stress accelerated life testing methods of metering equipment. The new method aims to reduce test time as well as sample size besides obtaining realistic failures by accelerating one stress that is temperature and applying other potential stresses to resemble typical Indian field environment and operating conditions. The proposed method has been applied on an electronic type of electrical energy meter. The experimental results from laboratory testing are found to be simulating field failures appropriately in lesser time. These are highly desirable given the present day pressure on industry’s to shorten new product introduction time while obtaining realistic estimations. The recommended approach is quite simple in application and applicable to electronic types of electric energy metering equipment. The proposed method overcomes the limitations of accelerated life testing method outlined in International Electro-technical Commission (IEC) standard 62,059-31-1 for reliability testing of metering equipment. The major problem observed in implementation of the IEC standard is large sample size and long test time requirements, which restricts its application for reliability demonstration/estimation purposes. A new approach is designed keeping in mind requirement of electrical energy meter customers. These customers face the problem during selection of appropriate meter, which are mostly electronic these days. These meters are supposed to work 24 h a day for a long life. The customers need an efficient and effective way of estimating life of meters. The proposed testing method helps in achieving desired results with an advantage of reducing sample size, cost, man-hour, test equipment use-age and material requirements, by assuring quick failures in lesser test time. With short launch time of product, it is the need of hour to produce test results in short span of time.