Siemens SINAMICS SH150 - Shield Connection

6.8.3 Shield connection
Only use shielded medium-voltage cables to reduce cable-conducted radio frequency
interference (RFI) and to achieve the appropriate EMC compatibility.
● The cable shield must be uninterrupted over the complete length of the cable and must
comprise non-magnetic material. Preferably use cables with foil-type shields.
● Do not connect other cable shields, power cables or control signals to the motor cable
shield. Powerful electrical interference and disturbances are induced in cables such as
these.
● For plants and systems distributed over a wide physical area, always use an equipotential
bonding conductor.
● Correctly connect armored cable using a cable gland. The cable armor must be connected
to the cable gland around its complete circumference. The gland itself must be in contact
with the gland plate around its complete circumference and must be connected to PE.
Procedure
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1 Shield connection
2 Cable gland with grounding bushing
Figure 6-7 Shield connection
Input side
Only connect shield 1 on the drive side to the PE shield busbar. Do not connect the shield on
the transformer side.
Output side
Connect shield 1 at the drive to the PE shield busbar. Connect shield 2 at the motor.
Electrical connection
6.8 Connecting power cables
SINAMICS SH150 6SL3805
76 Operating Instructions 05/2020