Remove and Install the DC Link Fuses for Frame 7

Replace the DC link fuses with the appropriate kit catalog number that is identified in this table:
Cat. No.
Power Module Voltage Class
Fuses per Kit
Fuse Amps /Leg (1 Leg)
Bussman Fuse Number
SK-RM-DCFUSE1-F8
400V/480V AC
2
1400
170M6467
SK-RM-DCFUSE2-F8
600V/690V AC
2
1100
170M6499
Follow these steps to remove and install the DC link fuses.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. Open the enclosure door.
  4. Remove the protective guard. See Remove and Install the Protective Guard for Frame 7.
  5. Disconnect the fuse wire harness connectors from the fuse indicator switches and retain the wire harness for reuse.
    example of how to disconnect the wire harness from the frame 7 DC link fuses
  6. TIP: Some components not shown for clarity only.
  7. Loosen, but do not remove the two M12 hexagonal nuts that secure each of the fuses to the connection DC bus bars and DC terminals on the power module.
  8. Remove the M10 hexagonal nut and bolt that secure each of the connection DC bus bars to the DC terminals on the power module.
    example of how to remove the frame 7 DC connecting bus bars
  9. Remove the two M12 hexagonal nuts that secure each of the fuses to the connection DC bus bars and DC terminals on the power module and remove the DC bus bars and fuses.
    example of how to remove the frame 7 DC bus fuses
  10. Install the DC link fuses in the reverse order of removal.
    DC link fuse harness connections
  11. Verify that the fuse wire harness connectors are installed on the outer two terminals of the fuse indicator switches.
Provide Feedback
Have questions or feedback about this documentation? Please submit your feedback here.
Normal