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7.4
Connecting the grounding conductor
7.4.1
General information on connecting the grounding conductor
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.
7.4.2
Minimum surface area of grounding conductor
Table 7-3
Minimum cross-section of the phase conductor
7.4.3
Grounding connection type
Type of enclosure grounding
Connection of an individual conductor under the
external grounding bracket.
Connection is made using a DIN cable lug under
the external grounding bracket. DIN 46 234
1FU9
Operating Instructions, 10/2023, A5E46712792A
Minimum cross-sectional area of grounding conductor
for installation
S
mm²
S ≤ 25
25 < S ≤ 50
S > 50
Electrical connection
7.4 Connecting the grounding conductor
Minimum cross-section of the associated
grounding connection
mm²
S
25
0.5 S
Conductor cross-sec‐
tion
mm²
... 10
... 25
75
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