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000063BG
5 - Installation
G
rid output connection (AC side)
For the connection to the inverter grid you need 3 connections: ground,
neutral and phase.
The ground connection to the inverter is obliga-
tory
.
Plug the grid cable into the inverter using the specific
AC cable gland
08
and connect the AC output screw terminal block
09
.
Use a properly sized tripolar cable and check the tightness of the
AC
cable gland
08
at the end of the installation.
C
haracteristics and sizing of the line cable
The cross-section of the AC line conductor must be sized in order to
prevent unwanted disconnections of the inverter from the grid due to
high impedance of the line that connects the inverter to the power supply
point; In fact, if the impedance is too high, it causes an increase in the
AC voltage that, on reaching the limit set by the country of installation,
causes the inverter to switch off.
The table shows the maximum length of the line conductor based on the
cross-section of this conductor:
Cross-section of the line con-
ductor (mm
2
)
Maximum length of the line conductor (m)
UNO-2.0-I-OUTD
UNO-2.5-I-OUTD
2,5
15
12
4
25
20
6
38
30
The values are calculated considering an energy loss along the line (in rated power condi-
tions) not exceeding 1%.
The temperature rating of the line cable must be at least 20° C above the maximum expected
ambient temperature.
RS485 CARD
J24
RS485(B)
17
1
18
J15
1
J16
2
J6
1
RS485
T/R
T/R
RTN
LNK
J14
BT1
CR2032
WIND REM
WT
WT
R
R
RS485(A)
J13
ALARM
N.C
.
N.O
.
C
TERM. 120
ON
OFF
S3
17
MEMORY CARD
J4
18
K4
J23
S1
1
S2
2
N
1
L
2
MOV3
3
MOV4
J25
RED
GFI
GFI
BLACK
W4
W3
WHITE
GND_MODE
W2
GRID
MOV2
J10
3
+IN
4
J20
F1
J5
1
5
2
9
6
14
11
J9
DC IN
-IN
1
-IN
2
J19
J7
1
MOV1
+IN
J17
J18
J8
1
RS485 CARD
J24
RS485(B)
17
1
18
J15
1
J16
2
J6
1
RS485
T/R
T/R
RTN
LNK
J14
BT1
CR2032
WIND REM
WT
WT
R
R
RS485(A)
J13
ALARM
N.C
.
N.O
.
C
TERM. 120
ON
OFF
S3
17
MEMORY CARD
J4
18
K4
J23
S1
1
S2
2
N
1
L
2
MOV3
3
MOV4
J25
RED
GFI
GFI
BLACK
W4
W3
WHITE
GND_MODE
W2
GRID
MOV2
J10
3
+IN
4
J20
F1
J5
1
5
2
9
6
14
11
J9
DC IN
-IN
1
-IN
2
J19
J7
1
MOV1
+IN
J17
J18
J8
1
08
09
08
09
RS485 CARD
J24
RS485(B)
17
1
18
J15
1
J16
2
J6
1
RS485
T/R
T/R
RTN
LNK
J14
BT1
CR2032
WIND REM
WT
WT
R
R
RS485(A)
J13
ALARM
N.C
.
N.O
.
C
TERM. 120
ON
OFF
S3
17
MEMORY CARD
J4
18
K4
J23
S1
1
S2
2
N
1
L
2
MOV3
3
MOV4
J25
RED
GFI
GFI
BLACK
W4
W3
WHITE
GND_MODE
W2
GRID
MOV2
J10
3
+IN
4
J20
F1
J5
1
5
2
9
6
14
11
J9
DC IN
-IN
1
-IN
2
J19
J7
1
MOV1
+IN
J17
J18
J8
1
RS485 CARD
J24
RS485(B)
17
1
18
J15
1
J16
2
J6
1
RS485
T/R
T/R
RTN
LNK
J14
BT1
CR2032
WIND REM
WT
WT
R
R
RS485(A)
J13
ALARM
N.C
.
N.O
.
C
TERM. 120
ON
OFF
S3
17
MEMORY CARD
J4
18
K4
J23
S1
1
S2
2
N
1
L
2
MOV3
3
MOV4
J25
RED
GFI
GFI
BLACK
W4
W3
WHITE
GND_MODE
W2
GRID
MOV2
J10
3
+IN
4
J20
F1
J5
1
5
2
9
6
14
11
J9
DC IN
-IN
1
-IN
2
J19
J7
1
MOV1
+IN
J17
J18
J8
1
08
09
08
09
S Version
Standard version
max 6 mm
10 ÷ 17 mm
2