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IEC 60034-7

IEC 60034-7:2020
Rotating electrical machines - Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM Code)
IEC 60034-7:2020 specifies the IM Code, a classification of types of construction, mounting arrangements and the terminal box position of rotating electrical machines. Two systems of classification are provided as follows:
- Code I: An alpha-numeric designation applicable to machines with end-shield bearing(s) and only one shaft extension
- Code II: An all-numeric designation applicable to a wider range of types of machines including types covered by Code I.
This third edition cancels and replaces the second edition, published in 1992, and its Amendment 1:2000. The main technical changes with regard to the previous edition are as follows:
- note on twin motors added
- reference to 4.3 instead of duplication of text
- new subclause on marking of shaft inclination or declination.
The contents of the corrigendum of March 2023 have been included in this copy.

Technical committee

TC 2 Rotating machinery
Publication typeInternational Standard
Publication date2020-10-07


Stability date2028
ISBN number9782832288450
File size1.87 MB
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