Connecting the Inverter to the Utility Grid

Qualified person

Requirements:

  • The connection requirements of the grid operator must be met.

  • 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 AC miniature circuit breaker and secure against reconnection.
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  2. Ensure that the DC load-break switch is in the O position.
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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.
  4. Dismantle the AC cable by 50 mm.
  5. Shorten L1, L2, L3 and N by 8 mm each so that the grounding conductor is 8 mm longer. This ensures that the grounding conductor is the last to be pulled from the screw terminal in the event of tensile strain.
  6. Strip the insulation of L1, L2, L3, N and the grounding conductor 12 mm.
  7. If the conductor cross-section is 1.5 mm² to 2.5 mm², provide each conductor with a bootlace ferrule in accordance with DIN 46228.
  8. Assemble the AC connector and connect the conductor to the AC connector (see manual of the AC connector).
  9. Ensure that all conductors are securely connected to the AC connector.
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  10. Plug the AC connector into the jack for the AC connection. When doing so, align the AC connector so that the key on the inverter AC jack is inserted into the keyway on the AC connector bush insert.
    Requirements for the AC Connection
    Connecting Additional Grounding