Siemens 6RA7086-6KS22

05.05 Maintenance
SIEMENS AG 6RX1700-0AD76 13-9
SIMOREG DC Master Operating Instructions
13.2.4 Replacement of fuses and thyristor assemblies on converters of 1500A and
above
1
2
3
7
8
4
5
6
25 Nm
6 Nm
6 Nm
10 Nm
25 Nm
• Undo the M6 hexagonal nut
a.
• Swing the fan
s upwards and hold in place with support rail d .
• Remove the brace
f with the attached protective cover by undoing the 2 M6 hexagon-head
screws.
• Remove fuses
g by undoing the 2 hexagon-head screws on each (M10 or M12 depending on
converter model).
• Undo the M10 hexagon-head screw
h and swing thyristor assembly j out towards you.
• Undo assembly locking mechanism (M6 hexagonal nut)
k , and pull out thyristor assembly j
upwards at an angle.
• Install the new components in the reverse order.
Caution
: The fuse mounting screws are of different lengths!