NDLI: Comparison of protection requirements in IE2-, IE3-, and IE4-class motors

Content Provider	IEEE Xplore Digital Library
Author	Ferreira, Fernando J. T. E. Leprettre, Benoit Duarte, Andre Q. De Almeida, Anibal T.
Copyright Year	2015
Description	Author affiliation: Dept. Electrical and Computer Engineering, Institute of Systems and Robotics, University of Coimbra, Polo II, 3030-290, Coimbra, Portugal (Ferreira, Fernando J. T. E.; Duarte, Andre Q.; De Almeida, Anibal T.) \|\| Schneider Electric, Electropole 38EQI - 38 Eybens, France (Leprettre, Benoit)
Abstract	In this paper, an overview of the main motor features influencing the protection devices settings is presented, pointing out key differences between three-phase direct-on-line motors of different efficiency classes. The results of experimental tests and simulations are presented and discussed in the scope of the motor protection against overload, short-circuit, current unbalance and locked-rotor conditions, for 7.5-kW, 4-pole, IE2- and IE3-class squirrel-cage induction motors and for IE4-class line-start permanent-magnet motors, offering important data related to their electrical and thermal behavior. Two commercial digital thermal-magnetic motor protection devices, whose thermal models were in most cases designed for IE1- and IE2-class motors, are evaluated in terms of operation effectiveness in the tested motors. This work is important for industry due to the significant penetration of IE3-class induction motors, as well as to the recent introduction in the market of IE4-class induction motors and line-start permanent magnet motors.
Starting Page	1874
Ending Page	1880
File Size	833695
Page Count	7
File Format	PDF
e-ISBN	9781479979417
DOI	10.1109/IEMDC.2015.7409320
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-05-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Induction motors Permanent magnet motors Reluctance motors Surges Surge protection Rotors Locked Rotor Circuit Breakers Inrush Current Induction Motor Line-Start PM Motor Motor Protection Switchgears Undervoltage Voltage Unbalance
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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