Connecting the connections to the automatic transfer switching device

Qualified person

Requirements:

  • The lid of the enclosure of the automatic transfer switching device has been opened or removed.

  • The installation cover of the automatic transfer switching device has been removed.

Procedure:

  1. Disconnect the inverter from voltage sources (see inverter manual).
  2. Switch off the battery (see battery manual).
  3. Switch off the AC fuse in the meter cabinet.
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  4. Connect the grounding cable to the connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm).
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  5. Connect conductor N for connection to the utility grid to the GRID N connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm).
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  6. Connect conductor L1 for connection to the utility grid to the GRID L1 connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm).
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  7. Connect conductor L1 for the backup loads to the LOAD L1 connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm).
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  8. Connect conductor N for the backup loads to the LOAD N connection on the automatic transfer switching device. To do this, unlock the terminal with a suitable tool (blade width 5.5 mm).
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  9. Connect conductor N to the INV N connection on the fuse block in the automatic transfer switching device.
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  10. Connect conductor L1 to the INV L1 connection on the fuse block in the automatic transfer switching device.
  11. Connect conductors L1, N and PE to the inverter (see inverter manual).
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  12. Connect the SPS OUT AC cable to the L and N connections on the automatic transfer switching device as labeled. To do this, unlock the terminal with a suitable tool (blade width 3.5 mm).
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  13. Connect the SPS IN AC cable to the 1 and 2 connections on the automatic transfer switching device as labeled. To do this, unlock the terminal with a suitable tool (blade width 3.5 mm).
  14. Tug lightly to ensure that all conductors are secured in the terminals.
    TN-C-S grid configuration
    Optional: Connecting residual-current device