Connecting the AC conductors

Qualified person

Additionally required material:

  • 1 conduit (trade size: 27 mm (1 in) or smaller with suitable reducer bush)

  • Sealing compound for sealing the join between the conduit and inverter if a weep hole has been added to the conduit

  • 1 rain-tight conduit fitting or conduit fitting for wet locations complying with UL 514B (trade size: 27 mm (1 in) or smaller with suitable reducing bush)

Requirements:

  • The AC and DC electric circuits are isolated from the enclosure. If required by the National Electrical Code® ANSI/NFPA 70 or Canadian Electrical Code® CSA C22.1, the installer is responsible for grounding the system.

  • All electrical installations must be carried out in accordance with the local standards and the National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1.

  • The grid voltage must be within the permissible range. The exact operating range of the inverter is specified in the operating parameters .

Procedure:

  1. Disconnect the miniature circuit breaker from all 3 line conductors and secure against reconnection.
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  2. Ensure that the DC load-break switch is in the O position / OFF.
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  3. If your country requires the DC load-break switch to be protected against reconnection, secure the DC load-break switch against reconnection with a padlock.
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  4. Unscrew the screws of the enclosure lid with a Torx screwdriver (TX 25) and remove the enclosure lid carefully forward.
  5. Remove the adhesive tape from the enclosure opening for the AC connection.
  6. Attach the conduit to the enclosure opening.
  7. Guide the conductors from the conduit into the inverter.
  8. Strip off the conductor insulation by 0.71 in to 0.79 in each.
  9. If necessary, provide each conductor with a bootlace ferrule.
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  10. Press the locking lever of terminal PE upward, guide the equipment grounding conductor into the terminal, and press the locking lever downward again.
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  11. For connection without a neutral conductor, use the jumper provided to bridge terminal blocks PE and N. For this, press the locking levers of terminals PE and N upward, guide the jumper into the terminals, and press the locking levers downward again.
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  12. Press the locking levers of terminals L1, L2, L3, and if applicable N upward, guide conductors L1, L2, L3, and if applicable N into the terminals according to the labeling, and press the locking levers downward again.
  13. Ensure that the correct conductors are assigned to all the terminals.
  14. Ensure that all conductors are securely in place.
  15. If a weep hole has been added to the conduit, seal the conduit with sealing compound.

    Also see:

    Electrical connection procedure
    Connecting the Network Cables