6 Electrical Connection
SMA Solar Technology AG
Operating manual
SI44M-80H-13-BE-en-15
46
2. Connect the
insulated measuring conductor to the side
for connecting the battery fuse on the battery current sensor.
BatCur −
Battery
Battery fuse
3. Connect the
BatCur-
insulated measuring conductor to the side
for connecting the battery on the battery current sensor.
BatCur −
Battery
Battery fuse
4. Thread both insulated conductors through a ferrite included in the scope of delivery and connect to the terminals
und
BatCur-
on the Sunny Island (see Section 6.6.6, page 61).
6.5.10 Connecting the Control Cable for Autostart Generators
Relevant for off-grid systems
Autostart generators are started and stopped with a contact.
Signal generator or generator control in a cluster
Slaves control the generator less reliably than masters do.
• Connect the generator control preferably to the master.
• In a multicluster system, always connect the signal generator to the master of the main cluster.
SUNNY ISLAND
NO
C
EXTERNAL GENERATOR
Relay
Star
t
Figure 11: Connecting the Generator Control to Sunny Island
Requirements:
☐ The technical requirements of the multifunction relay must be met (see Section 16, page 175).
Cable requirements:
☐ Conductor type: copper wire
☐ Conductor cross-section: 0.2 mm² to 2.5 mm²
