Replacing Fuses; Replacing The Current Transformer - Siemens SINAMICS SM150 6SL3810-7NN38-0AA1 Operating And Installation Instructions

6. Push the Power Stack Adapter upwards.
7. Remove the Power Stack Adapter.
Installing the Power Stack Adapter
1. Execute the steps described in the section "Removing the Power Stack Adapter" in the
2. Tighten the fastening screws with a torque of 10 Nm.
3. Ensure the correct connection of the fiber-optic cables.
Sending in the Power Stack Adapter
You can send in the defective Power Stack Adapter for a special examination. Further
information is contained in the note "Special examination of defective components (Page 155)".
Observe the following when you send in a component:
1. Close the fiber-optic cable connectors with blanking plugs.
2. Send the defective Power Stack Adapter only in the approved packaging.
9.5.7

Replacing fuses

To replace the -F11, -F12 or -F21 fuses, proceed as follows:
1. Disconnect the auxiliary power supply.
2. Remove the defective fuse.
3. Rectify the cause of the fault.
4. Fit the replacement fuse and close the fuse holder.
The order numbers for replacing fuses that have blown can be found in the spare parts list.
9.5.8

Replacing the current transformer

The current transformer may only be replaced by technicians trained by Siemens.
SINAMICS SM150 6SL3810-7NN38-0AA1
Operating Instructions Rev.201910281406 EXAMPLE
reverse order.
NOTICE
Damage to the power semiconductors
The power semiconductors can be damaged if you replace the fiber-optic cable at the
Power Stack Adapter.
Observe the connector assignment marked on the fiber-optic cables.
Maintenance
9.5 Repair
163