Rockwell Automation SB3000 AC Power Modules - Manual (Page 54)

4-16 SB3000 Power Modules (Rittal)
Step 4. Remove the wiring harnesses from the IGBT Phase module assembly. The
wiring includes the power supply wiring, the temperature sensor wiring, and
the fiber-optic cables. Remove the fiber-optic cables by pressing the sides of
the connectors to release the locking mechanism. Label the harnesses to aid
in re-installation. Refer to the wiring diagrams supplied with your system.
Note that due to tight mechanical tolerances, it may be necessary to remove
IGBT Phase module assemblies U and/or V, in order to remove assemblies V
and/or W.
Step 5. Remove the bolts from the fuses. See figure 4.5, callouts 1 and 2.
Step 6. Remove the 2 bolts from the AC bus bar. The bolts are located below the
LEM device and above the fuse. See figure 4.5, callout 3.
Step 7. Remove the 2 hex nuts from the negative bus bar. See figure 4.5, callout 4.
Step 8. Remove the 2 hex nuts from the heatsink. One hex nut is located on each
side of the heatsink. See figure 4.5, callout 5.
Step 9. Remove the IGBT module assembly from the SB3000 Power Module.
Step 10. Install the new IGBT module assembly by performing steps 1 through 9 in
reverse order.
Step 11. Close the cabinet doors and reapply power to the SB3000 Power Module.
Figure 4.5 – IGBT Module Assembly Mounting Bolt Locations
5
4
1
2
3
PHASE V
PHASE W