Remove and Install the Power Module Balance Resistors for Frames 8...15

Replace the power module balance resistors with the appropriate kit catalog number:
  • SK-RM-INVBR1-F8M (400/480V) - For power module catalog numbers 20-750-MIn-CnnnDnnn
  • SK-RM-INVBR2-F8M (600/690V) - For power module catalog numbers 20-750-MIn-EnnnFnnn
Follow these steps to remove and install the balance resistors.
  1. Review the product advisories in Before You Begin.
  2. Remove power from the system.
  3. Open the corresponding enclosure door.
  4. Remove the power module from the enclosure.
  5. Remove the three M6 x 16 mm Torx screws that secure the right-side cover to the power module chassis and remove the cover.
    example of how to remove the frame 8…15 power module right-side cover
  6. Disconnect the stab connectors from the terminals on the balance resistors.
    frame 8…15 power module balance resistor connection locations
  7. NOTE: Frame 8…15 power modules contain either two or four balance resistors.
  8. Loosen the lower M4 nut that secures the balance resistor to the power module chassis.
  9. Remove the upper M4 nut that secures the balance resistor to the power module chassis and remove the resistors.
    example of how to remove the frame 8…15 power module balance resistors
  10. Install the balance resistors in the reverse order of removal.
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