Comparative analysis of IEEE 112-B and IEC 34-2 efficiency testing standards using stray load losses in low-voltage three-phase, cage induction motors

Almeida, Anı́bal T. de; Ferreira, Fernando J. T. E.; Busch, John; Angers, Pierre

doi:10.1109/28.993186

Cited by 43 publications

(11 citation statements)

References 7 publications

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“…2) [5] -derives SLL from assigned values, is still widely used in Europe, Japan, India, Australia, China, etc. -leads to medium-high uncertainty and is no longer recommended, due to its inherent error, as demonstrated in [6].…”

Section: B New Motor Efficiency Testing International Standardmentioning

confidence: 95%

“…Furthermore, measurement tolerances vary in the different test methods, and the impact of the supply frequency (50 Hz or 60 Hz) used during the test on the final test results complicates things further. The efficiency measurements using IEEE 112-B or the old IEC 60034-2 lead to different results [6]. Fig.…”

Section: Minimum Motor Efficiency Requirements Around the Worldmentioning

confidence: 98%

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Electric motor standards, ecodesign and global market transformation

Almeida

Ferreira

Fong

et al. 2008

2008 IEEE/IAS Industrial and Commercial Power Systems Technical Conference

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The use-phase cost of most industrial electric motors, namely the consumed electrical energy, dominates by far their overall life-cycle cost. Because electric motors use about 70% of the total industrial electricity use, they present attractive opportunities to save a huge amount of electricity in a costeffective way, and contribute to mitigate climate change. The lack of global efficiency classes has prevented the large-scale adoption of high efficiency motors in most countries around the world. This paper addresses the most relevant electric motor efficiency-related international standards, including minimum efficiency requirements and a new efficiency classification standard, which have a profound impact on motor market transformation, being a powerful tool to reduce electric motor systems consumption. Moreover, the final results and conclusions of a European study to identify and recommend ways to improve the life-cycle environmental performance of electric motors at their design phase are presented, focusing lifecycle cost assessment of standard and best available electric motor technologies. It was found that if high efficiency or premium class motors replace standard efficiency class motors, significant reductions in the environmental impact will be achieved.

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Section: B New Motor Efficiency Testing International Standardmentioning

confidence: 95%

Section: Minimum Motor Efficiency Requirements Around the Worldmentioning

confidence: 98%

Electric motor standards, ecodesign and global market transformation

Almeida

Ferreira

Fong

et al. 2008

2008 IEEE/IAS Industrial and Commercial Power Systems Technical Conference

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“…Machine efficiency results are illustrated in Table III [12,23,24]. Secondly, the ratios of SSL to input power for the five machines are all in excess of 0.5%.…”

Section: Machine Efficiencymentioning

confidence: 99%

Assessment of iec 60034-2-1 in determining induction machine efficiency

Cao

Huang

French

et al. 2010

Euro. Trans. Electr. Power

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This paper evaluates the efficiency of induction machines and measurement uncertainties arising from applying two editions of the International Electrotechnical Commission (IEC) testing standard in industry. Machine testing standards vary in methodology, procedure and required instrumentation accuracy, therefore leading to significant discrepancies in the experimentally determined efficiency for the same induction machine tested to different standards as well as by different testing personnel. Five new induction machines with ratings between 7.5 and 150 kW are carefully tested using IEC 60034-2 (old edition), 60034-2-1 (new edition) and Institute of Electrical and Electronics Engineers (IEEE) standard 112 method B which is used as a benchmark. Furthermore, a 30 kW calorimeter is employed to validate power loss measurements and a realistic uncertainty estimation (RUE) is adopted to assess associated measurement uncertainties in power losses and efficiency, and then to assess the standard methods. Experimental results and uncertainty analysis confirm that IEC 60034-2-1 standard has improved over its previous version in defining a set of higher instrumentation accuracy, a more detailed testing procedure and more accurate models for core loss and particularly stray load loss (SLL). Overall, calorimetric methods justify the effectiveness of IEC 60034-2-1 in terms of providing reliable power losses and efficiency. Finally the need for a unified international induction machine testing standard is highlighted.

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“…efficiency [2]. The efficiency on the nameplate (given by the manufacturers) is measured and calculated according to a number of efficiency standards [5]. With many of the motors in South Africa coming from around the world, the efficiency on the motors needs to be consistent.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Standards for Determining Losses and Efficiency of Three-Phase Induction Motors

Mzungu

Sebitosi

Khan

2007

2007 IEEE Power Engineering Society Conference and Exposition in Africa - PowerAfrica

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The efficiency of induction motors has emerged as having the biggest potential in saving energy consumption. This is important to South Africa where energy saving has risen as a major concern. This paper looks at the different motor efficiency standards that are available and attempts to compare them. The paper discusses results obtained from tests done on a 3kW high efficient motor. Three standards used were the CSA-390 a Canadian standard, IEEE 112 an American standard and the new European standard, the IEC 61971. Results show that the IEEE and CSA-390 produce higher efficiencies than the IEC standards. The reasons for this are discussed. The effects of equipment accuracy and supply harmonics are discussed in brief. A suggestion for a South African Standard with aspects drawn from the standards is put down as the present SANS IEC 60034-2 (1972) is outdated.

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Comparative analysis of IEEE 112-B and IEC 34-2 efficiency testing standards using stray load losses in low-voltage three-phase, cage induction motors

Cited by 43 publications

References 7 publications

Electric motor standards, ecodesign and global market transformation

Electric motor standards, ecodesign and global market transformation

Assessment of iec 60034-2-1 in determining induction machine efficiency

Comparison of Standards for Determining Losses and Efficiency of Three-Phase Induction Motors

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