Siemens SINAMICS S120 Manual page 304

Maintenance and servicing
6.4 Replacing components
Note
If you order a complete power unit as a replacement, make sure that only DC fuses are
used. If option L37 (DC interface with pre-charging input circuit) is installed in your cabinet,
the DC fuses of the spare part must be replaced with the lugs of the existing power unit.
Replacing the DC fuses, frame sizes HX and JX
Figure 6-27
Preparatory steps
● Observe the "five safety rules".
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Remove the protective cover.
● Allow unimpeded access.
The DC voltage may still be present for up to 5 minutes.
304
Replacing the DC fuses, frame sizes HX and JX
CAUTION
Cabinet Modules
Manual, (GH5), 05/2010, A5E03263538A