Connecting the DC Cables

Qualified person

To connect the DC cables, always connect the 2 nearest battery modules to each other. All battery modules are connected in series.

Additionally required material (not included in the scope of delivery):

  • 2 DC cables for connecting to the inverter

  • At least 1 longer DC cable is required to connect the battery modules to each other if they are not mounted directly above each other. This is unavoidable for:

    • 4 or 5 battery modules

    • Back-to-back

Requirement:

  • The battery modules must be mounted.

  • All grounding cables must be connected.

Procedure:

  1. Ensure that the battery modules and the inverter are disconnected from all voltage sources.
  2. To make a longer cable, use the provided MC4 connectors.
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  3. Connect the battery modules to each other in series. For this, connect the plug connector of the DC cable BAT+ with the BAT- connector.
  4. Prepare the DC cables of the inverter. If needed, crimp the provided MC4 connectors with the cables.
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  5. Connect the top plug connector BAT+ of the top or last battery module with the positive terminal of the inverter (see inverter documentation). Pay attention to the polarity details on the battery module and inverter.
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  6. Connect the bottom plug connector BAT- of the bottom or first battery module with the negative terminal of the inverter (see inverter documentation). Pay attention to the polarity details on the battery module and inverter.

    Also see:

    Connecting the battery communication system to the inverter
    Commissioning