6 Electrical Connection
SMA Solar Technology AG
Operating manual
SBSxx-10-BE-en-11
46
Network cable requirements:
The cable length and quality affect the quality of the signal. Observe the following cable
requirements.
☐ Cable type: 100BaseTx
☐ Cable category: Cat5, Cat5e or higher
☐ Plug type: RJ45 of Cat5, Cat5e or higher
☐ Shielding: SF/UTP, S/UTP, SF/FTP or S/FTP
☐ Number of insulated conductor pairs and insulated conductor cross-section: at least 2 x 2 x
0.22 mm²
☐ Maximum cable length between two nodes when using patch cables: 50 m
☐ Maximum cable length between two nodes when using installation cables: 100 m
☐ UV-resistant for outdoor use
Procedure:
1.
DANGER
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section 9, page 86).
2. Remove the sealing plugs from the network connection opening on the inverter.
3. Insert the cable gland into the opening and tighten it with the counter nut from the inside.
4. Cut into the two-hole cable support sleeve with a box cutter. This will push the cable into the
grommet.
5. Press the cable support sleeve into the two-hole cable gland.
6. Insert the cable into the enclosure opening of the two-hole cable support sleeve.
7. Lead one end of each network cable into the inverter.
8. When using a self-assembly network cable, assemble the RJ45 connectors and connect them
to the network cable (see connector documentation).
9. Put the network plug of each cable into one of the
network sockets of the communication assembly.
D-IN
SPS
A
B
ANT.
FCC ID: SVF-KP20
IC: 9440A-KP20
Max. 30V DC
USB
SPS
B
D-IN
10. Ensure that the network connector is securely in place by pulling slightly on each cable.
11. If the inverter is installed outdoors, install surge protection device.
12. If you would like to establish a direct connection, connect the other end of the network cable
directly to the end device.
13. If you would like to integrate the inverter into a local network, connect the other end of the
network cable to the local network (e.g. via a router).