Connecting The Network Cables - SMA SB3.0-1SP-US-41 Installation Manual

SMA Solar Technology AG
6.3

Connecting the Network Cables

Danger to life due to electric shock in case of overvoltages and if surge
protection is missing
Overvoltages (e. g. in the event of a flash of lightning) can be further conducted into the building
and to other connected devices in the same network via the network cables or other data cables
if there is no surge protection. Touching live parts and cables results in death or lethal injuries due
to electric shock.
• Ensure that all devices in the same network are integrated in the existing overvoltage
protection.
• When laying the network cable outdoors, ensure that there is suitable surge protection at
the network cable transition from the product outdoors to the network inside the building.
• The Ethernet interface of the inverter is classified as "TNV-1" and offers protection against
overvoltages of up to 1.5 kV.
Additionally required material (not included in the scope of delivery):
• One to two network cables
• Where required: Field-assembly RJ45 connector.
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 (2 x 2 x 24 AWG)
☐ Maximum cable length between two nodes when using patch cables: 50 m (164 ft)
☐ Maximum cable length between two nodes when using installation cables: 100 m (328 ft)
☐ UV-resistant for outdoor use
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section 8, page 61).
2. Remove the sealing plugs from the network connection opening on the inverter.
3. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.
4. Attach the conduit to the conduit fitting.
Installation Manual
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SBxx-1SP-US-41-IA-xx-10
6 Electrical Connection
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