Galaxy VXL Backfeed Protection Cabinet for 380/400/415 V – Installation PDF
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Install Interconnection Busbars and Power Cables in the Backfeed Protection Cabinet and the UPS (380/400/415 V)

NOTE: Use the neutral extension busbar JPT04181, the neutral interconnection busbar TME73420, the interconnection busbar assembly JPT00104, the part TME78392 (provided in installation kit TME86016), the interconnection ground busbar TME73425 (provided in installation kit TME86016), spring washers (provided in installation kit 0M-18450), and hardware from installation bag number 3, 4, 5, and 6 for this procedure.
  1. Remove the transparent plate from the backfeed protection cabinet.
  2. Open and remove the inner doors from the UPS – see the UPS installation manual for details.
  3. In the top left side of the UPS, remove the indicated part and save the screws. Install the new provided part TME78392 as shown in the UPS with the reused screws.

    Front View of the UPS

  4. Only for dual mains system: Remove the three single mains busbars. Save the three single mains busbars for testing during start-up of the UPS.

    Front View of the UPS

  5. Install the neutral busbar assembly:
    1. Install the neutral extension busbar JPT04181 in the UPS as shown. Use four M10 nuts provided in installation bag number 3.
    2. Install the neutral interconnection busbar TME73420 between the neutral busbars in the UPS and the backfeed protection cabinet. Use eight M8 nuts provided in installation bag number 3.

    Front View of the Backfeed Protection Cabinet and the UPS

  6. Connect the power cables:

    Front View of the Backfeed Protection Cabinet and the UPS – Single Mains

    Front View of the Backfeed Protection Cabinet and the UPS – Dual Mains

    1. Connect the PE cables. Note that only the four rear-most positions on PE busbar in the left side of the UPS can be used. All positions on the PE busbar in the right side of the UPS can be used.

      View of the PE Busbar in the Left Side of the UPS

    2. Connect the DC- cables. Connect the DC+ cables. Ensure correct polarity – incorrect polarity will damage the power modules at start-up.
      CAUTION
      Risk of equipment damage
      Ensure correct connection of DC cables. Ensure correct polarity – incorrect polarity will damage the power modules at start-up.
      Failure to follow these instructions can result in injury or equipment damage.
    3. Connect the output cables (L1, L2, L3, N). Note that the two N busbars in the UPS are common.
    4. Connect the input cables (L1, L2, L3, N). Note that the two N busbars in the UPS are common.
    5. Only for dual mains system: Connect the bypass cables (L1, L2, L3, N).
    CAUTION
    Risk of cable lug disconnection
    • Use the provided spring washers when connecting the cable lugs to the busbars as shown in the illustration.
    • Connect the cable lugs to the busbars as shown in the illustration.
    Failure to follow these instructions can result in injury or equipment damage.

    Cable Lug to Busbar Assembly

    Cable Lug to Busbar Assembly

    The spring washers (marked with (A) in the illustration) are provided in installation kit 0M-18450. The flat washers (marked with (B) in the illustration), bolts, and nuts are not provided.

  7. Install the interconnection ground busbar TME73425 between the PE/ground busbars in the UPS and the backfeed protection cabinet. Use three M10 bolts and three M10 nuts provided in installation bag number 4.

    Front View of the Backfeed Protection Cabinet and the UPS

  8. Install the busbar assembly JPT00104 by performing one of the following:
    • For single mains: Install the busbar assembly JPT00104 on the bypass busbars (L1, L2, L3) in the UPS. Use 12 M10x45 bolts provided in installation bag number 5. OR
    • For dual mains: Install the busbar assembly JPT00104 on the bypass busbars (L1, L2, L3) in the UPS. Use 12 M10x45 bolts provided in installation bag number 5 and 12 M10 nuts provided in installation bag number 7.

    Front View of the Backfeed Protection Cabinet and the UPS

  9. Mount the busbar assembly JPT00104 on the busbars (L1, L2, L3) in the backfeed protection cabinet. Use 12 M10x45 bolts provided in installation bag number 6.

    Front View of the Backfeed Protection Cabinet and the UPS

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