IEC 60034-7-2020 pdf free

IEC 60034-7-2020 pdf free.Rotating electrical machines – Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM Code).
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• lEG Electropedia: available at http:/!www.electropedia.org!
• ISO Online browsing platform: available at http://www.iso.org/obp
type of construction arrangement of machine components with regard to fixings, bearing arrangement and shaft extension (SOURCE: IEC 60050-411:1996. 41 1-43-34]
3.2 mounting arrangement
orientation on site of the machine as the whole with regard to shaft alignment and position of fixings
3.3 shaft extension
portion of a shaft extending beyond an extreme bearing
Note 1 to entry: The beanng may be on the machine itself or be part of an assembly comprising a machine and (an) additional bearing(s).
[SOURCE: IEC 60050-411:1996, 411-43-07]
3.4 drive-end of a machine D-end
that end of the machine which accommodates the shaft end
Note 1 to entry: This is normally the driving end of a motor or the driven end of a generator. Where for some machines the above definition is Inadequate, the D-end is defined as follows:
a) Machine with two shaft extensions of different diameter: the end with the larger shaft diameter.
b) Machine with a cylindrical shaft extension and a conical shaft extension of the same diameter: the end with cylindrical shaft extension;
c) Machine with other arrangements: according to lEc 60034.8 it applicable: otherwise by agreement.
Note 2 to entry: The outer diameter of a forged.on flange is taken to be the diameter of the shaft extension.
(SOURCE: IEC 60050-411:1996, 41 1-43-36J
3.5 non-drive end of the machine N-end
that end of the machine opposite to the drive end
(SOURCE: IEC 60050-411:1996, 41 1-43-37J
4 Code I (alpha-numeric designation)
4.1 Designation of machines with horizontal shafts
In Code I, a machine with a horizontal shaft is designated by the code letters IM (International Mounting), followed by a space, the letter B, one or two numerals as shown in Table 1 and an optional letter as shown in 4.3.IEC 60034-7 pdf free download.