Replacing The Encapsulated Fuses; Replacing The Lv Hrc Fuses - Siemens SINAMICS S120 Equipment Manual

Maintenance and servicing
6.4 Replacing components
6.4.11.6

Replacing the encapsulated fuses

Preparatory steps
● Observe the "five safety rules".
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
Replacement steps
1. Open the cabinet.
2. Open the fuse holder (push the flap down/up).
3. Remove the defective fuse.
4. Insert the replacement fuse.
5. Close the fuse holder (push the flap up/down).
6. Close the cabinet.
6.4.11.7

Replacing the LV HRC fuses

Preparatory steps
● Observe the "five safety rules".
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Have the fuse grip ready.
Replacement steps
1. Open the cabinet.
2. Attach the fuse grip to the fuse.
3. Remove the defective fuse.
4. Press the yellow button on the fuse grip to release the defective fuse from it.
5. Attach the new fuse onto the grip.
6. Place the new fuse in the fuse holder in the cabinet.
7. Press the yellow button on the fuse grip to release the new fuse from it.
8. Close the cabinet.
Note
If necessary, the fuse grip can be ordered from Siemens.
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S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A