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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
Removing the PowerCard
1. Remove the PowerCard.
SINAMICS SM150 6SL3810-7NN38-0AA1
Operating Instructions Rev.201910281406 EXAMPLE
PowerCard.
②
screw connection
between the phase busbar and the neutral potential.
Figure 9-10
Releasing screw connections
CAUTION
Power card can cause injury if it is dropped
A PowerCard weighs 20 kg. If the PowerCard falls down, it could cause personal injury or
damage to property.
● Carefully lift out the PowerCard.
①
between the phase busbars and the
Maintenance
9.5 Repair
161
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