SIEMENS
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Siemens D 83.1 · 2016
1
Introduction
General technical specifications
Types of construction
■
Overview
Degrees of protection of rotating electrical machines
according to EN 60034-7
The most common types of construction are shown in the table.
It can be seen from the option lists for which frame size range the
individual types of construction are supplied. Other types of con-
struction are available on request. The type of construction is spec-
ified on the rating plate in accordance with Code I, EN 60034-7,
according to the type of construction ordered and also appears as
code letters in the type designation. This is not the case with motor
versions whose type of construction has not been standardized ac-
cording to Code I. In such cases, the type of construction is speci-
fied in accordance with Code II. Standard motors, that is frame
sizes 90 to 315 M, that are ordered in the basic (universal) types of
construction IM B3, IM B5 or IM B14, can also be operated in other
mounting positions as follows:
IM B3
in IM B6, IM B7, IM B8, IM V5 or IM V6,
IM B5
in IM V1 or IM V3,
IM B14
in IM V18 or IM V19.
For motors up to frame size 180 (standard version without
condensation drain), this applies without constraints. With frame
size 200 and above, it is important that the motors are installed
with the condensation drainage holes at the lowest point.
The line connection of the motors is suitable for all types of
construction due to the ability to rotate the terminal box by 90°.
The motors in the version "without explosion protection" for vertical
installation with the shaft extension pointing downwards are
supplied without a protective cover over the fan cover, unless
specified otherwise.
Type of construction
Acc. to EN 60034-7
Bearings
Motor type
Type of construction
code, 12th position of
the Article No.
Additional
identification code
with order code
Horizontal installation with bearing plates
Without flange
IM B3/IM 1001
2 bearing plates
A
0
IM B6/IM 1051
2 bearing plates
B
9
+M1A
IM B7/IM 1061
2 bearing plates
B
9
+M1B
IM B8/IM 1071
2 bearing plates
B
9
+M1C
IM B15/IM 1201
1 bearing plate – IM B3
no bearing plate
(also no roller bearing) at DE
J
9
+M2K
or
+M2L
IM B20/IM 1101
2 bearing plates
L
9
+M1Q
With flange
IM B35/IM 2001
2 bearing plates
D
6
IM B34/IM 2101
2 bearing plates
F
2
IM B5/IM 3001
2 bearing plates
C
1
IM B9/IM 9101
1 bearing plate – as for IM B5 or
IM B14, but no bearing plate and
no roller bearing at DE
G
9
IM B14/IM 3601
2 bearing plates
E
3
Special type of construction
–/IM 5210 without shaft,
rotor sits on external shaft
Without bearing
Y
9
© Siemens AG 2016