SMA SI 3.0-11 Installation - Manual (Page 60)

7 Electrical Connection SMA Solar Technology AG
60 SI30M-44M-60H-80H-IA-en-30 Installation Manual
Checking the generator connection
Checking the control and measuring cables
AC power cable at connection AC1 The cables are sufficiently protected by circuit breakers. □
Trip-capable circuit breakers are installed and additional type A
residual-current devices have been installed.
Maximum trip-capable circuit breakers:
• SI3.0M-11: Trip characteristic B6
• SI4.4M-11: Trip characteristic B6
• SI6.0H-11: Trip characteristic B16 or C6
• SI8.0H-11: Trip characteristic B16 or C6
□
With a three-phase system, allocation of
the Sunny Island inverters
The allocation of the Sunny Island inverters to the line conductors of
the stand-alone grid or the Multicluster Box results in a right-hand
rotating magnetic field. The master must be assigned to L1, slave 1
must be assigned to L2, slave 2 must be assigned to L3.
□
Test point Test criterion OK
The connection cables The conductor cross-section is sufficient for the maximum generator
current.
□
The cables are sufficiently protected by circuit breakers. □
With a three-phase off-grid system,
allocation of the line conductors
The allocation of the Sunny Island inverters to the line conductors of
the generator results in a right-hand rotating magnetic field. The
master must be assigned to L1, slave 1 must be assigned to L2,
slave 2 must be assigned to L3.
□
Grounding The exposed conductive part of the generator is grounded. □
Test point Test criterion OK
Battery temperature sensor if installed The battery temperature sensor is connected to the terminal
BatTmp.
□
The battery temperature sensor is secured in the middle of the
battery bank, in the upper third of the battery cell.
□
If installed, the control and measuring
cables of the Multicluster Box
The control and measuring cables are correctly connected
(see Multicluster Box manual).
□
If installed, the measuring cable of the
battery current sensor
The measuring cable of the battery current sensor is connected to
the terminal BatCur with the correct polarity (see Section 7.4.9
"Connecting the Battery Current Sensor in the Off-Grid System",
page 40).
□
Control cable of the load shedding, if
installed
The multifunction relay and the load-shedding contactors are
correctly wired (see Section 7.4.12 "Connecting Load-Shedding
Contactors", page 43).
□
Communication with
Sunny Island Charger 50, if installed
The data cable between the Sunny Island Charger 50 and the
Sunny Island is connected correctly (see manual for Sunny Island
Charger 50 charge controller).
□
Test point Test criterion OK