18_06_07_Battery Backup Distribution_10010371_ENG_V1.8 Seite -28- von -38-
Thermal nominal power [kW] and peak current [A] may not be exceeded! – Please observe
the technical data at Chapter -18-
Please note that the pre-fuse for the main supply (acc. Chapter -9-) also determines
simultaneously the cross section of the “X2” cable to the building’s distribution board. In this
case we also we recommend the cross-section of 16mm
2
– e.g. cable NYY 5 x 16mm
2
(within
PE).
11. Connecting the Sunny Island‘s
11.1 Terminal Block X3
The Battery Backup Distribution ensures the protection of Sunny Island’s “AC2 – grid terminals”
with the help of the circuit breaker “F6” (32A – “C” characteristic; 1-pole breaker for 1PH-BBDAP
and accordingly the 3-pole breaker for 3PH-BBDAP).
We recommend a cable-cross section of 6mm
2
for the Sunny Island connection, even better
10mm
2
in order to achieve a high efficiency at peak power conditions (e.g. NYY-J 3x6mm
2
or
3x10mm
2
)
11.2 Terminal Block X4/X5
The terminals for the Sunny Island’s control-in/outputs are suitable for a cross-section up to
2,5mm
2
.
NOTICE
- X5 “L1/N/PE”: Please use a cross-section of at least 6mm
2
!
(Background: The Sunny Island is capable to induce a high short circuit current into a damaged
cable - this may cause a cable fire if the copper cross section is undersized)
- X5 “3/4”: Please use a shielded cable!
Cable-types below could be used:
Single-Phase Battery Backup Distribution
terminal cable-type functionality
X4 „L1/N“ + „1/2“ NYM-J 3 x 1,5mm
2
Relay 1 + ExtVtg
X5 „1/2“ NYM-J 3 x 1,5mm
2
Relay 2
X5 „3/4“ J-Y(St) Lg e.g. 4x2x0,8mm
DigIn/BatVtgOut
X5 “L1/N” NYM-J 3 x 6,0mm
AC1 – L/N/PE
Three-Phase Battery Backup Distribution
terminal cable-type functionality
X4 „L1/N“ + „1/2“ NYM-J 3 x 1,5mm
Relay 1 + ExtVtg Master
X4 NYM-J 3 x 1,5mm
ExtVtg Slave 1
X4 NYM-J 3 x 1,5mm
2
ExtVtg Slave 2
X5 „1/2“ NYM-J 3 x 1,5mm
2
Relay 2 Master
X5 „3/4" J-Y(St) Lg e.g. 4x2x0,8mm
2
DigIn/BatVtgOut Master
X5 „L1/N“ NYM-J 3 x 6,0mm
2
AC1 – L/N/PE Master
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