Connection; Connecting The Gateway - SMA RoofCommKit-P2-US Instructions D'installation

5 Connection

5 Connection
5.1

Connecting the Gateway

Requirements:
☐ If several Gateways are present in the system, these have to be connected to each other prior
connection to the module in the inverter.
☐ A maximum of three Gateways can be connected to one module in the inverter.
☐ A terminator must be plugged into the last gateway in the row.
Cabling plan of the Gateways:
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Figure 4 : Cabling plan of the Gateways with module in the inverter
Cable requirements for the communication cable between Gateway and inverter:
☐ Number of conductors: 4
☐ Conductor cross-section: at least 0.22 mm² (24 AWG)
☐ Maximum external diameter: 8 mm (0.31 in)
☐ Maximum cable length: 305 m (1000 ft)
☐ The conductors should be twisted pairs if the total length of the communication cable exceeds
61 m (200 ft).
☐ The conductors should be shielded if the cable is laid in a nonmetallic cable raceway.
☐ UV-resistant for outdoor use
☐ The conductors lengths in the inverter must be as short as possible. This prevents contact with
live conductors.
☐ If the conductor is to be installed without conduit, the conductor has to be suited for outdoor
use.
☐ If the conductor is to be installed in a conduit together with live conductors, the conductor has
to be insulated for 600 V.
14 RoofCommKit-P2-US-IA-xx-11
SMA Solar Technology America LLC
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Installation manual