SMA SUNNY ISLAND 4548-US Operating Manual page 40

6 Electrical Connection
Terminal
AC terminals
Additional
Connections
An overview of the different devices and their connection areas of the Sunny Island 4548-US /
6048-US can be found in section (see Section 2.2 "At a Glance", page 22).
Detailed installation descriptions of the connections are provided in the following sections:
• Grounding (see Section 6.5 "Interface for External Communication", page 62)
• DC Connection (see Section 6.2 "DC Connection", page 43)
• AC Connection (see Section 6.3 "AC Connection", page 48)
• Data Cable of the Lithium-Ion Battery (see Section 6.4.2 "Connecting the Data Cable of the
Lithium-Ion Batteries", page 53)
• Battery Temperature Sensor (see Section 6.4.3 "Battery Temperature Sensor", page 53)
• Battery Current Sensor (see Section 6.4.4 "Battery Current Sensor", page 54)
• Communication for Multi-Device Connection (see Section 6.4.5 "Communication for
Multi-Device Connection", page 56)
• Multifunction Relay 1 and 2 (see Section 6.4.6 "Multifunction Relay 1 and 2", page 58)
• External Communication (see Section 6.5 "Interface for External Communication", page 62)
40 SI4548-6048-US-BE-en-21
Torque
22 in-lb (2.5 Nm)
5 in-lb to 7 in-lb
(0.56 Nm to
0.79 Nm)
SMA Solar Technology America LLC
Cable size
AWG 4 (25 mm²)
AWG 30 to AWG 12
(0.05 mm² to 4 mm²)
Cable type
Only use copper
conductors. These
cables must be
approved for 167°F
(75°C).
Only use copper
conductors. These
cables must be
approved for 167°F
(75°C).
Operating Manual