6 Electrical Connection
• Remove the two-hole cable support sleeve from the cable gland.
• Remove the sealing plug from one of the enclosure openings of the two-hole cable
support sleeve and insert the network cable into the enclosure opening.
• Press the two-hole cable support sleeve with the cable into the cable gland and guide the
network cable to the communication assembly in the DC connection unit. Ensure that any
unused enclosure openings of the two-hole cable support sleeve are sealed with sealing
plugs.
6. When using a self-assembly network cable, assemble the RJ45 connector and connect to the
network cable (see connector documentation).
7. Put the RJ45 plug of the cable into one of the network sockets of the communication assembly.
8. Ensure that the RJ45 plug is securely in place by pulling slightly on the cable.
9. When using the cable glands, tighten the swivel nut of each cable gland hand-tight. This will
secure the network cable in place.
10. If the inverter is installed outdoors, install overvoltage protection for all components in the
network.
11. Connect the other end of the network cable to the local network (e.g. via a router).
40
STP50-US-40-IA-en_es-11
SMA Solar Technology America LLC
Installation Manual