990-91111D-001

Connect the Power Cables

DANGER
hazard of electric shock, explosion, or arc flash
In single mains systems where power cables are split due to the cable size restriction, use the bypass busbars for the second input cable set. There is not enough space to land two input cable sets on the input busbars due to the single mains jumper busbars.
Failure to follow these instructions will result in death or serious injury.
NOTICE
Risk of equipment damage
To ensure correct load sharing in bypass operation in a parallel system:
  • All bypass cables must be the same length for all UPSs.
  • All output cables must be the same length for all UPSs.
  • All input cables must be the same length for all UPSs (only required in single mains system).
Failure to follow these instructions can result in equipment damage.
  1. Only for 3-wire systems:
    1. Remove the RFI bracket. Save the two screws.
    2. Remove the screw in the left side and save it.
    3. Install the RFI bracket in the left side with the three screws.

    Front View of the UPS

  2. Only for dual mains system: Remove the three single mains jumper busbars.

    Front View of the UPS

  3. Connect the power cables as shown in the described order:

    *Provided in kit.

    1. Connect the equipment grounding conductor/PE cables.
    2. Connect the N cables. Connect battery midpoint (if present in battery solution).
    3. Connect the DC+ cables.
    4. Connect the output cables.
    5. Connect the DC- cables.
    6. Only for dual mains system: Connect the bypass cables.
    7. Connect the input cables.
      NOTE: Ensure to connect the input cables to the correct input busbars in the top left side of the UPS.

      Front View of the UPS – Single Mains System

      Front View of the UPS – Dual Mains System

      CAUTION
      Risk of equipment damage
      Check the fastening of the cable lugs. If the cable lugs move due to pulling on cables, the bolt can become loose.
      Failure to follow these instructions can result in injury or equipment damage.
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