SMA SI 3.0-11 Installation - Manual (Page 61)

SMA Solar Technology AG 7 Electrical Connection
Installation Manual SI30M-44M-60H-80H-IA-en-30 61
Checking the wiring of the communication products
Checking the system devices
7.7 Sealing and Closing the Sunny Island
Figure 19: Position of the cable glands and the cable feed-through plate
Test point Test criterion OK
Electricity supply to communication
products
The plug-in power supply units are plugged in. □
The communication products are connected to an electricity supply. □
Termination of the communication buses The communication buses are connected to the first and last device
in the bus.
□
Test point Test criterion OK
System devices All system devices are correctly connected (see the manuals for the
devices).
□
Ensure by measuring that all system devices are connected with the
same ground potential.
□
Connection AC1 in the off-grid system The stand-alone grid or the Multicluster Box is connected to the
AC1 Loads/SunnyBoys terminals.
□
Connection AC2 in the off-grid system The generator is connected to connection AC2 Gen/Grid. □
The neutral conductor is connected to the terminal AC2 Gen/
Grid N.
□
Position Designation
A Cable glands
B Cable feed-through plate