Siemens SIMOTRAS 6SG7050 - Replacement of Fuses and Thyristor Assemblies on D400; 900 Mre Converters

01.04 Maintenance
SIEMENS AG 6SG7000-0BA76 13-9
SIMOTRAS HD Operating Instructions
13.2.4 Replacement of fuses and thyristor assemblies on D400 / 900 Mre converters
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, then 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!