16 Technical Data
SMA Solar Technology AG
Operating manual
181
SI44M-80H-13-BE-en-15
TN-C-S grid configuration
This grid configuration is used in battery-backup systems
and systems for increased self-consumption (not for off-
grid systems). When using systems with MC-
BOX-12.3-20, a GRID-BOX-12.3-20 must be installed.
Suitable
TT grid configuration
Suitable
16.12 Protective Devices
AC short-circuit
yes
AC overload
yes
DC reverse polarity protection
not available
Battery deep discharge
yes
Overtemperature
yes
Overvoltage category as per IEC 60664-1
III
Maximum permissible fuse protection / back-up fuse
50 A
Power control / Demand response
Communication via Modbus interface
Export limiting in accordance with AS/NZS 4777.2
EDMM-10, EMETER-20, HM-20
Demand Response Mode
DRM0
16.13 Equipment
Number of buttons
3
Number of LEDs
3 two-color LEDs
Number of interface slots
1
COM SYNC
for internal communication only
SI-SYSCAN.BGx
optional for Sunny Island 6.0H/8.0H
Number of digital control inputs
1
High level digital input
9 V to 63 V
Low level digital input
0 V to 3 V
Potential-free control contacts
Two multifunction relays
Number of connections for battery current sensors
1
Measuring accuracy with connected battery current sen-
sor
± 10 %
Maximum length of measuring cable on battery current
sensor
3 m
AC load switching limit for multifunction relays 1 and 2
1 A at 250 V
DC load switching limit for multifunction relays 1 and 2
