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:
- Disconnect the AC and backup miniature circuit breaker from all 3 line conductors and secure against reconnection.
- Ensure that the DC load-break switch has been switched off and secured against reconnection.
- Ensure that the battery is switched off.
- Label the AC connector for connection to the utility grid to prevent subsequent confusion with the AC connector for connection to the backup loads.
- Unscrew the swivel nut of the AC connector and remove the terminal from the AC connector.
- For a cable diameter of ≥ 19 mm, remove the inner sealing ring from the AC connector.
- Route the AC cable through the swivel nut and connector enclosure.
- Dismantle the AC cable (80 mm to 90 mm).
- Strip the insulation of L1, L2, L3, N and the grounding conductor (12 mm).
- Insert the conductors L1, L2, L3, N, and grounding conductor into the terminal block according to the labeling and tighten the terminal block screws (PH2, torque: 1.5 Nm).
- Ensure that the conductors are correctly assigned and firmly seated in the terminal.
- Insert the terminal into the connector enclosure. The terminal must snap audibly into place.
- Tighten the swivel nut on the connector enclosure.
- Remove the protective cap from the AC-GRID socket.
- Insert the AC connector into the AC-GRID socket. The AC connector must snap audibly into place.
- Slide the fuse terminal block onto the bracket of the AC connector from the left and screw tight (PH1, torque: 0.5 Nm).
