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.

1. Disconnect the AC miniature circuit breaker and secure against reconnection.
2. Remove the adhesive tape from the enclosure opening for the AC connection.
3. Insert the cable gland into the opening and tighten it with the counter nut from the inside.
4. Guide each cable into the inverter. In the process, lay each cable in such a way that they do not come into contact with the communication assembly.
5. Connect the grounding conductor to the grounding terminal:

• Guide the conductor between the washer and clamping bracket and tighten the screw (TX 25) (torque: 6 Nm ± 0.3 Nm).

Connection of conductors of finely stranded wire

To connect conductors made of finely stranded wire, each terminal point must be opened.

1. First insert the conductor into the terminal point all the way to the lock (round opening). Then insert a flat-blade screwdriver (blade width: 3.5 mm) as far as it can go into the actuation shaft (rectangular opening). Hereby the lock opens and the conductor can be placed into the terminal point as far as possible. After the connection has been made, the flat-blade screwdriver must be pulled out of the actuation shaft.

WARNING

Fire hazard due to faulty conductor connection

If the conductors are inserted into the actuation shafts (right-angled openings), a fire may occur during inverter commissioning.

• Connect L to the terminal block in accordance with the labeling. Insert the conductor into the corresponding terminal point (round opening) up to the stop.