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Electrical connection
6.4 Connecting the grounding conductor
6.3.1
Cable entries, sealing plugs and thread adapters
Note the following when mounting:
• Avoid damaging the cable jacket.
• Adapt the tightening torques to the cable jacket materials.
Observe the documentation for tightening torques of the cable entries and sealing plugs for
direct mounting at the machine as well as additional glands (e.g. adapters).
6.4
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.
6.4.1
Minimum surface area of grounding conductor
Table 6-3
Minimum cross-section of the phase conductor
70
Minimum cross-sectional area of grounding conductor
for installation
S
mm²
S ≤ 25
25 < S ≤ 50
S > 50
Minimum cross-section of the associated
grounding connection
mm²
S
25
0.5 S
1LE1, 1FP1/3, 1PC1/3 shaft height 63 ... 315
Operating Instructions, 11/2023, A5E38483075A
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