SMA SB 240 - Manual (Page 40)

2. Route the AC cable of the utility grid through one opening at the bottom of the distribution box
to the terminal Grid of the Sunny Multigate.
3. Dismantle the AC cable to the desired length.
4. Strip 8 mm insulation off each of the three conductors of the AC cable of the utility grid.
5.
Damage to the Sunny Multigate due to incorrectly connected conductors
If PE and L or N are swapped, the Sunny Multigate could be damaged during commissioning.
• Be sure to observe the terminal labels on the Sunny Multigate.
• Connect all conductors in accordance with the terminal labels.
– Connect the grounding conductor of the AC cable to the terminal PE of the Sunny
Multigate. Make sure that the conductor is inserted into the terminal right up to the
stop.
– Connect the line conductor of the AC cable to the terminal L of the Sunny Multigate.
Make sure that the conductor is inserted into the terminal right up to the stop.
– Connect the neutral conductor of the AC cable to the terminal N of the Sunny
Multigate. Make sure that the conductor is inserted into the terminal right up to the
stop.
6. Tighten all three screws of the connecting terminal plate using a flat-blade screwdriver (torque:
0.6 Nm).
7. Make sure that all terminals are correctly
allocated.
8. Make sure that all conductors are securely in place.
9. Connect the grounding conductor of the Sunny Multigate to the equipotential bonding of the
AC distribution board.
6.8 Connecting the PV Modules to the Inverters
Requirements:
☐ The PV modules must be correctly mounted in accordance with the manufacturer specifications.
☐ Each inverter must be connected to no more than one PV module.
☐ The thresholds for the input voltage and the input current of the inverter must be adhered to.
☐ The positive connection cable (DC+) of the PV module must be fitted with a positive DC
connector suitable for the DC connector of the inverter.
☐ The negative connection cable (DC−) of the PV module must be fitted with a negative DC
connector suitable for the DC connector of the inverter.
6 Electrical Connection SMA Solar Technology AG
Installation Manual SMA-SB240-IA-en-12 40