Grounding Using A Make-Proof Grounding Switch - Siemens SINAMICS SM150 Operating Instructions Manual

Attaching the grounding spider
Secure the clamps for the grounding spider to the ball heads
①
②
Figure 9-3
9.2.2

Grounding using a make-proof grounding switch

The drive is equipped with a make-proof grounding switch (in compliance with the requirements
of IEC61800-5-1, Section 4.2.13).
You can close the make-proof grounding switch when the doors are closed and only at a
voltage below 60 V. If the auxiliary voltage fails completely, the make-proof grounding switch
cannot be closed. It is not permissible that you open the doors before the make-proof grounding
switch is closed.
Danger to life as a result of a DC link short-circuit
A DC link short-circuit can occur if you ground the drive under voltage. This can result in death,
serious injury or material damage.
● Remove the socket wrench before switching on the power. This activates the interlocking.
SINAMICS SM150 6SL3845-7NN42-2AA3 HBIS Shigang WRM NTM
Operating Instructions Rev.202003051222 3005356504
; Ball heads
Attaching the grounding spider
WARNING
Maintenance
9.2 Grounding the system
① ②
and .
125