Cable glands with connecting thread in the terminal box (EN 50262)
② O ring
6.2 Tightening torques
Note the information in Chapter Tightening torques (Page169).
6.3 Connecting the grounding conductor
The machine's grounding conductor cross-section must comply with EN/IEC60034-1.
Please also observe installation regulations suchas those specied in EN/IEC60204-1.
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.
6.3.1 Minimum surface area of grounding conductor
Table 6-2 Minimum cross-sectional area of grounding conductor
Minimum cross-section of the phase conductor
for installation
S
mm²
Minimum cross-section of the associated
grounding connection
mm²
S ≤ 25 S
25 < S ≤ 50 25
S>50 0.5 S
Electrical connection
6.3Connecting the grounding conductor
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A 85
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