IEC 60034-7:2001 pdf download

IEC 60034-7:2001 pdf download.Rotating electrical machines -Part 7:
Classification of types of construction,mounting arrangements and terminalbox position (IM Code).
This part of IEC 60034 specifies the IM Code, a classification of types of construction. mounting arrangements and the terminal box position of rotating electrical machines,
Two systems of classlhcation are provided as follows:
— Code I (see section 2>: An alpha-numeric designation applicable to machines with end- shield bearing(s) and only one shaft extension.
— Code Il (see section 3): An all-numeric designation applicable to a wider range of types of machines including types covered by Code I.
The type of machine not covered by Code II should be fully described in words.
The relationship between Code I and Code II is given in annex A.
1.2 DefinitIons
For the purposes of this part of IEC 60034. the following definitions apply:
1.2.1
type of construction
the arrangement of machine components with regard to fixings, bearing arrangement and shaft extension
(1EV 60411.13.34)1)
1.2.2
mounting arrangement
the orientation on site of the machine as the whole with regard to shalt alignment and position of fixings
(1EV 60411-13-35)
1.2.3
shaft extension
a portion of a shaft extending beyond an extreme bearing
(1EV 60411-13-07)
NOTE The bearing may be on the machine itselt ci be part of an assembly comprising a machine and (an) additional bearing(s),
1.2.4
drive-end of a machine CD-end)
that end of the machine which accommodates the shalt end
(1EV 60411-13-36)
NOTE 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 shalt extensions of different diameter: the end with the larger shaft diameter;
b) Machine with a cylindrical shalt extension and a conical shaft extension of the same diameter: the end with cylindrical shaft extention;
C) Machine with other arrangements: according to IEC 60034-8 if applicable: otherwise by agreement.
NOTE The outer diameter of a lorged-on flange Is taken to be the diameter of the shaft extension.