Tightening Torques; Connecting The Grounding Conductor; Minimum Surface Area Of Grounding Conductor - Siemens SIMOTICS XP 1MB 1 Series Operating Instructions Manual

Cable glands with connecting thread in the terminal box (EN 50262)
6.2

Tightening torques

Note the information in Chapter Tightening torques (Page 169).
6.3

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.
6.3.1

Minimum surface area of grounding conductor

Table 6-2
Minimum cross-section of the phase conductor
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A
Minimum cross-sectional area of grounding conductor
for installation
S
mm²
S ≤ 25
25 < S ≤ 50
S > 50
6.3 Connecting the grounding conductor
②
O ring
Minimum cross-section of the associated
grounding connection
mm²
0.5 S
Electrical connection
S
25
85