Protective Devices; Equipment - SMA SUNNY ISLAND 4.4M Operating Manual

SMA Solar Technology AG
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.
TT grid configuration

16.12 Protective Devices

AC short-circuit
AC overload
DC reverse polarity protection
Battery deep discharge
Overtemperature
Overvoltage category as per IEC 60664-1
Maximum permissible fuse protection / back-up fuse
Power control / Demand response
Export limiting in accordance with AS/NZS 4777.2
Demand Response Mode

16.13 Equipment

Number of buttons
Number of LEDs
Number of interface slots
COM SYNC
SI-SYSCAN.BGx
Number of digital control inputs
High level digital input
Low level digital input
Potential-free control contacts
Number of connections for battery current sensors
Measuring accuracy with connected battery current sen-
sor
Maximum length of measuring cable on battery current
sensor
AC load switching limit for multifunction relays 1 and 2
DC load switching limit for multifunction relays 1 and 2
Operating manual
Suitable
Suitable
yes
yes
not available
yes
yes
III
50 A
Communication via Modbus interface
EDMM-10, EMETER-20, HM-20
DRM0
3
3 two-color LEDs
1
for internal communication only
optional for Sunny Island 6.0H/8.0H
1
9 V to 63 V
0 V to 3 V
Two multifunction relays
1
± 10 %
3 m
1 A at 250 V
Section 16.15, page 182
SI44M-80H-13-BE-en-15
16 Technical Data
181