NDLI: 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

Content Provider	IEEE Xplore Digital Library
Author	de Almeida, A.I. Ferreira, F.J.T.E. Busch, J.F. Angers, P.
Copyright Year	1972
Abstract	Since 1998, 817 motor efficiency test data sets, in the 1-500 hp (0.75-375 kW) range have been collected from several sources in different countries around the world, for 50 and 60 Hz. The test data include the motor efficiency using the IEC 34-2 and IEEE 112-B test standards, and the quantification of the stray load losses (SLLs), using the IEEE 112-B method. In 125 cases, the test data include the efficiency computed with both methods. The aim of this paper was the quantification of the discrepancy between the two mentioned standards, and to establish an approximate method to allow the comparison between motors tested with the two standards. Based on the significant number of collected motor data sets, it was concluded that, when compared to the IEEE 112-B standard, the IEC 34-2 standard is less accurate, and gives typically higher efficiency values, mainly because of the SLLs estimation procedure. The IEEE 112-B SLLs computed values are typically higher than the IEC SLLs predefined values, on average of 1.0 and 0.8 percentage points for 50-Hz and 60-Hz motors, respectively. Also, the average SLLs values vary slightly with the motor power. Using efficiency measurements made with both standards on the same motors, it was possible to confirm that the SLLs are the main reason for the observed discrepancy in the efficiency values. The results of the analysis carried out in this paper offer the possibility of comparing the efficiency of motors tested under the IEC 34-2 standard with motors tested with IEEE 112-B, leading to a choice of the most cost-effective option. This paper also provides a key contribution to the ongoing revision of the IEC 34-2 standard.
Sponsorship	IEEE Industry Applications Society
Starting Page	608
Ending Page	614
Page Count	7
File Size	366668
File Format	PDF
ISSN	00939994
Volume Number	38
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	IEC standards Testing Induction motors Power measurement Loss measurement Measurement standards Mechanical variables measurement Electric variables measurement Manufacturing Electric motors
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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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

An evaluation of induction machine stray load loss from collated test results

An Evaluation of Induction Machine Stray Load Loss From Collated Test Results

The repeatability of IEEE standard 112B induction motor efficiency tests

Induction motor efficiency measurements in accordance to IEEE 112-B, IEC 34-2 and JEC 37 international standards

A Comparison of direct and indirect measurement of induction motor efficiency

Evaluation of different measurement methods to determine stray load losses in induction machines

Comparison of IEEE 112 and New IEC Standard 60034-2-1

When loads stray: Evaluation of Different Measurement Methods to Determine Stray Load Losses in Induction Machines

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

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