990-91260A-001

Connect the Power Cables

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.
NOTE: The UPS is preconfigured for TNS earthing system. 3-wire installation using a bonding busbar will result in a higher leakage current.
  1. Only for TN-C/3-wire earthing system: Move the bonding busbar from position (A) to position (B) to connect the N busbar to the PE busbar.

    Rear View of UPS

  2. Only for dual mains system: Remove the indicated single mains jumper cables located behind the output/bypass terminals.

    Rear View of UPS

  3. Connect the power cables as shown:
    1. Connect the PE cables.
    2. Connect the input cables.
    3. Only for dual mains system: Connect the bypass cables.
    4. Connect the output cables.
    NOTE: Torque the insulated ferrules to 3.7 Nm (2.7 lb-ft / 32.7 lb-in).

    Rear View of UPS

    CAUTION
    Risk of equipment damage
    Check the fastening of the cable lugs/insulated ferrules. If the cable lugs/insulated ferrules move due to pulling on cables, the bolt/screw can become loose.
    Failure to follow these instructions can result in injury or equipment damage.
  4. Reinstall the right rear plate.
  5. Reinstall the left rear gland plate on the UPS.
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