Siemens SINAMICS S150 NEMA, Operating Instructions Manual

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Maintenance and servicing
11.4 Replacing components
Enclosed Drives
Operating Instructions, 12/2018, A5E36652151A
789
WARNING
Electric shock as the cover above the line supply connections has been removed
When the lower cover (over the line connections) is removed, line voltage is present
even when the main switch is switched off. Contact with the connections can result in
death or serious injury.
• Do not remove the cover (shock protection) over the line connections.
3. Loosen the screws of the defective fuse.
Note
Loosen the screws, but do not fully unscrew them.
Do not fully unscrew the screws of the fuses as the screws can fall into the device.
4. Remove the defective fuse.
NOTICE
Device failure after a LV HRC fuse trips
When a low-voltage high-rupturing-capacity fuse trips, the neighboring low-voltage high-
rupturing-capacity fuses may also become damaged. Failure to replace all fuses at the
same time can cause the device to fail.
•
After a low-voltage high-rupturing-capacity fuse trips, always replace all low-voltage
high-rupturing-capacity fuses at the same time. Always use fuses of the same type.
Installation steps
The following steps are used to install the screw-mounted LV HRC fuse:
1.
Insert the new fuse in the correct position.
2. Tighten the screws with the required torque.
3. Attach the front shock hazard protection cover.
The mains switch can then be switched on.
WARNING
Electric shock when using unsuitable fuses
If unsuitable fuses are used, an electric shock can cause severe injury or death.
•
Use only fuses specified in the spare parts list.