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4.3.4
Tightening torques, cable entry and sealing ring
Table 4-8 Tightening torques of clamping screw connections
Frame
size
100
112
132
160
180
200
225
250
280
315
355
Maximum cable diameter corresponds to the hole diameter of the sealing
ring.
4.4
Grounding device
The machine's grounding conductor cross-section must comply with EN / IEC
60034-1.
Please also observe installation regulations such as those specified in EN / IEC
60204-1.
Basically, there are two ways of connecting a grounding conductor to the
machine.
• Internal grounding with a connection in terminal box at the location
intended for this purpose and marked accordingly.
• External grounding with connection at the stator housing at the locations
intended for this purpose and marked accordingly.
104
Number
of
the sealing
cable
entries
80
90
1
2
Clamping ring
Size of
Screw
rings
size
∅ mm
42
M6 x 35
58
M8 x 40
72
M10 x 40
90
M10 x 45
Clamping plate
Tightening
Screw
torque
size
Nm
8
M6 x 16
8
M6 x 25
18
M8 x 25
28
Tightening
torque
Nm
8
20
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