Maintenance
11.2 Replacing components
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
699
Replacing fuses for 1500 A to 3000 A units
The fuses are accessible after removing the front cover and withdrawing the fan module
(see the previous chapter). Each fuse is fixed with 2 hex screws. Tightening torque 25 Nm.
NOTICE
Damage to the device due to improper fuse installation
Incorrect installation of the fuses can cause damage to the device.
•
When installing the fuses, observe the following instructions:
–
Install the fuses with the same alignment as the fuses to be replaced. The rupture
indicator of the fuses in the left-hand and right-hand series must point towards the
center of the unit.
–
The fixing screws have different lengths. Use the screws at the same position.
Figure 11-10 Fuse replacement for devices 1500 A to 3000 A
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