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Preparation
1. Detach the fiber-optic cables for the IGBT power semiconductors on the front and rear of the
2. Disconnect the auxiliary power supply for the gating boards from the rear.
3. On each IGBT, remove the six screw connections
SINAMICS SM150 6SL3815-7NP41-0AA1
Operating Instructions Rev.201910281301 EXAMPLE
PowerCard.
②
screw connection
between the phase busbar and the neutral potential.
Figure 9-9
Releasing screw connections
①
between the phase busbars and the
Maintenance
9.5 Repair
167
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