Grounding Connection Type; Minimum Surface Area Of Grounding Conductor - Siemens SIMOTICS DP 1PC134 Operating Instructions Manual

Electrical connection
6.3 Connecting the grounding conductor
6.3.1

Grounding connection type

Enclosure grounding method
Connection of an individual conductor under the ex‐
ternal grounding bracket.
Connection is made using a DIN cable lug under the
external grounding bracket. DIN 46 234
6.3.2

Minimum surface area of grounding conductor

Table 6-3
Minimum cross-section of the phase conductor for
Internal ground terminal
When making connections, ensure the following:
● Ensure that the connecting surface is bare and is protected against corrosion using a
suitable substance, e.g. acid-free Vaseline.
● Arrange the flat washer and spring washer under the bolt head.
● Locate the cable lug under the clamping bracket.
● Use the terminals designated for the grounding conductor in the terminal box.
● Observe the tightening torque for the locking screw.
56
Minimum cross-sectional area of grounding conductor
installation
S
[mm²]
S ≤ 25
25 < S ≤ 50
S > 50
Minimum cross-section of the associated ground‐
ing connection
[mm²]
S
25
0.5 S
1PC134, 1PC136 crane motors SH 132 ... 315
Operating Instructions, 02/2019, A5E43212221A
Conductor cross-
section
mm²
... 10
... 25