Remove and Install the AC Input Link Fuses for Frame 7

Replace the AC input link fuses with the appropriate kit catalog number based on the LCL filter module that is identified in table:
Fuse Kit Cat. No.
LCL Filter Module Cat. No.
Voltage Rating
Fuses per Kit
Fuse Rating
Bussman Fuse Number
SK-RM-ACFUSE1-F8
20-750-ML4-C585D617
400V/480V
3
690/700V (IEC/U.L.), 900 A
170M6463
SK-RM-ACFUSE5-F8
20-750-ML4-E395F370
600V/690V
3
690/700V (IEC/U.L.), 700 A
170M6461
All fuses are Bussman Square Body - Flush End Contact -BKN/- Type K Indicator.
Follow these steps to remove and install the AC input 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 connector P1 from J1 on the I/O panel at the back of the LCL filter module.
  6. Disconnect the fuse wire harness connectors from the fuse indicator switches and discard the wire harness.
    Frame 7 AC input fuse connections
  7. NOTE: Some components are not shown for clarity only.
  8. Remove the two M12 hexagonal screws that secure each fuse terminal to the AC input and output bus bars and remove the fuse.
    example of how to remove the AC input fuses from a frame 7 LCL filter module
  9. Install the AC input link fuses in the reverse order of removal. Verify that the new fuse wire harness connectors are installed on the outer two terminals of the fuse indicator switches.
    AC input fuse harness connections
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