Replacing The Fuses (F71 - F73) In The Line Connection Module - Siemens SINAMICS S120 Equipment Manual

Maintenance and servicing
6.4 Replacing components
6.4.11.3

Replacing the fuses (F71 - F73) in the Line Connection Module

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.
Removal and installation procedures
Note
On Line Connection Modules with a rated current of < 800 A, the fuses are freely accessible
and can be replaced once the fault cause has been eliminated.
Note
On Line Connection Modules with a rated current of between 800 and 1600 A, the removal
procedures described below must be followed to replace the fuses.
1. Open the cabinet.
2. Take the top screws out of the support plate underneath the fuses. Loosen the bottom
3. Attach the fuse grip to the fuse.
4. Remove the defective fuse.
5. Press the yellow button on the fuse grip to release the defective fuse from it.
6. Attach the new fuse onto the grip.
7. Place the new fuse in the fuse holder in the cabinet.
8. Press the yellow button on the fuse grip to release the new fuse from it.
9. Attach the support plates underneath the fuses again.
10. Close the cabinet.
Note
If necessary, the fuse grip can be ordered from Siemens.
300
screws slightly. The support plate can then be pushed downwards.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A