Siemens SIMOTICS HV C - Connecting the Grounding Conductor

6.2.7 Connecting the grounding conductor
The grounding conductor cross-section of the machine must be in full conformance with the
installation specifications and to IEC 60034-1.
External conductor cross-section S
mm²
Grounding conductor cross-section
mm²
4 4
6 6
10 10
16 16
25 25
35 25
50 25
70 35
95 50
120 70
150 70
185 95
240 120
300 150
400 185
There is a hexagon bolt with a flat washer and a spring washer on the stator frame at the
designated connecting point for the grounding conductor.
The grounding conductor can be connected as follows:
● With stranded cables with cable lugs
● With flat cables with cable end designed accordingly
Connecting the grounding conductor
● Use the connecting terminals designated for the grounding conductor in the terminal box.
● 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 screw head.
Electrical connection
6.2 Preparation
SIMOTICS HV C 1NB1402-2AA84-4CA0-Z
Operating Instructions 06/2018 59