6 Electrical Connection
SMA Solar Technology AG
Operating manual
41
SI44M-80H-13-BE-en-15
Requirements:
☐ A separate cable must be laid for each Sunny Island from the AC distribution board or directly from the
generator.
☐ For a single-phase parallel cluster, the cable length and the conductor cross-section must be identical from each
Sunny Island to the AC distribution board or directly to the generator.
☐ With each three-phase cluster, the connection of the line conductor must be prepared as follows: L1 to the master,
L2 to slave 1 and L3 to slave 2. This results in a right-hand rotating magnetic field.
Procedure:
1. On the Sunny Island, connect the power cable to the
AC2 Gen/Grid
. To do this, connect the line conductor to
AC2 Gen/Grid L
and the neutral conductor to terminal
2. Thread the grounding conductor through a ferrite included in the scope of delivery and connect to
AC2 Gen/
Grid PE
6.5.7
Communication Connection
6.5.7.1
Connecting the Data Cable for Speedwire Network
The Sunny Island and 1 communication product (e.g. Sunny Home Manager 2.0) can be directly interconnected via
Speedwire. If more than 2 devices are to communicate via Speedwire or the Sunny Home Manager 2.0 is to establish
an internet connection to the Sunny Portal, a Speedwire network is required.
Requirements:
☐ All Speedwire devices must be connected to the same router.
☐ The router and the optional network switch must fully support Multicast.
☐ The router must support "Internet Enabled Devices" with the SIP and STUN interfaces.
Most common routers and network switches support Multicast and "Internet Enabled Devices".
Cable requirements:
☐ Cable length between 2 nodes:
– Maximum 50 m with patch cable
– Maximum 100 m with installation cable
☐ Cross-section: at least 2 x 2 x 0.22 mm² or at least 2 x 2 x 24 AWG
☐ Cable type: 100BaseTx, CAT5 with S-UTP, F-UTP shielding or higher
☐ Type of plug: RJ45
Procedure:
1. Insert the data cable in the pin connector
ComETH
on the Sunny Island (see Section 6.6.4, page 59).
2. Connect the other end of the data cable to the router or network switch.
6.5.7.2
Connecting the Data Cable of the Lithium-Ion Batteries
Requirements:
☐ The total length of the communication bus must not exceed 30 m. Keep in mind that the communication bus
possibly connects several nodes.
Cable requirements:
☐ Classification: CAT5e
☐ Type of plug: RJ45