Connect the Power Cables in the UPS

NOTE: If a breaker kit for AC power supply of external Lithium-ion BMS (GVXLOPT004) is part of your installation, the breaker kit for AC power supply of external Lithium-ion BMS must be installed before the power cables are connected in the UPS. Follow the installation manual provided with the breaker kit for AC power supply of external Lithium-ion BMS.

Remove the two inner doors. Save all parts for reinstallation:
1. Remove the two screws and the two L-shaped parts. Remove the 13 screws.
  
  Front View
2. Open the two inner doors.
3. Unplug the signal cable connectors.
4. Remove the nut and brackets in both sides.
  
  Front View
5. Lift the inner doors upwards to remove them.
  
  Front View
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
Only for TNC earthing system: Move busbar 880-63490 to connect the N busbar to the PE busbar in the UPS:
1. Remove the four screws and remove busbar 880-63490 from its original position (A). Save the screws.
2. Install busbar 880-63490 with the four screws in the new position (B). Lift/move the cardboard plate enough to get access, but do not remove the cardboard plate.
Front View

Connect the power cables in the described order. Assemble the cable lugs to the busbars as shown.

Front View

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

Spring washer (A) – provided in kit 0M-18450. Flat washer (B) (not provided).

Connect the PE cables.

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.

Connect the output cables (L1, L2, L3, N). Note that the three N busbars are common for input, bypass, and output.
Connect the input cables (L1, L2, L3, N). Note that the three N busbars are common for input, bypass, and output.
Only for dual mains system: Connect the bypass cables (L1, L2, L3, N). Note that the three N busbars are common for input, bypass, and output.

Remove all debris and clean the cabling area. Cut up the cardboard plate and remove it. Ensure that no cardboard pieces are left in the cabinet.

Front View
Reinstall the two inner doors:

NOTE: The inner doors also have to be removed for installation of external synchronization. If external synchronization is part of your system, go directly to Connect the Signal Cables for External Synchronization.
1. Lift the inner doors onto the hinges.
2. Reinstall the nut and brackets in both sides.
3. Reconnect the signal cable connectors.
4. Close the inner doors and reinstall the 13 screws.
5. Reinstall the L-shaped part in both sides with the two screws.
Front View