Grounding Connection Type; Minimum Surface Area Of Grounding Conductor; Ground Connection Inside And Outside - Siemens SIMOTICS A 1FU8 Operating Instructions Manual

6.4.2

Grounding connection type

Enclosure grounding method
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
6.4.3

Minimum surface area of grounding conductor

Table 6- 5
Minimum cross-sectional area of phase conduc-
6.4.4

Ground connection inside and outside

Internal ground connection
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.
● Comply with the tightening torque for the terminal screw.
1FU8
Operating Instructions, 02/2016, 5 610 70000 02 000
Minimum cross-sectional area of grounding conductor
tor for installation
S
[mm²]
S ≤ 16
16 < S ≤ 35
S > 35
6.4 Connecting the grounding conductor
Minimum surface area of associated grounding
connection
[mm²]
S
16
0.5 S
Electrical connection
Conductor
cross-
section
[mm²]
... 10
... 25
61