EVVO 20000TLG23P, User Manual

Page: 9 / 36

EVVO 20000TLG23P~EVVO 33000TLG23P EVVO 20000TLG23P~EVVO 33000TLG23P
11 12
Figure2-10 Electrical block diagram
Function module
A. Configurable relay
The inverter has a configurable switching relay that can be used in various operating
conditions set in the dedicated menu. A typical application example is the closing of the
contact when an alarm occurs.
B. Energy management unit
B.1 Remote switching on/off
This control can be used to switch the inverter on/off through an external (remote) control.
B.2 Feeding reactive power into the grid
The inverter can produce reactive power and can therefore feed it into the grid through the setting of the phase
shift factor. Feed-in management can be controlled directly by the grid company through a dedicated RS485
serial interface.
B.3 Limiting the active power fed into the grid
The inverter, if enabled can limit the amount of active power fed into the grid by the inverter to the desired value
(expressed as a percentage).
B.4 Self-power reduction when grid over frequency
When the grid frequency is over limited value, inverter will reduce output power which do good to the grid
stability.
B.5 Power reduction due to environmental conditions, input output voltage
The power reduction value and the inverter temperature at which it occurs depend on the ambient temperature and
on many operating para-meters. Example: input voltage, grid voltage and power available from the photovoltaic
field. The inverter can therefore reduce the power during certain periods of the day and according to the value of
these parameters.
C. Data transmission
The inverter may be monitored remotely through an advanced communications system based on an RS485 serial
interface, or remotely via the WIFI.
D. Software update
SD card is used for updating the firmware
.
E. Monitoring string inputs
The inverter can monitor and display the voltage and current of each individual string input. It also checks the
status of the strings and generates a warning in the event of a fault.
INPUT EMI FILTER
OUTPUT EMI FILTER
WIFI
(O
P
T
)
R
S4
8
5
SD
C
a
rd
SL
AV
E D
SP
M
AS
TE
R D
SP
IN
1
A
(+
)
IN
1
B
(+
)
IN
1
C
(+
)
+
+
RLY
L1
L1
L1
L1
M
P
P
T
1
D
C
/D
C
IN
1
IN
1
A
(-
)
-
-
+
IN
1
B
(-
)
L2
L2
L2
L2
IN
1
C
(-
)
IN
V
E
R
T
E
R
D
C
/A
C
L3
L3
L3
L3
DC
S
P
DII
I
IN
2
A
(+
)
IN
2
B
(+
)
IN
2
C
(+
)
O
V
P
+
+
-
M
P
P
T
D
C
/D
C
N1
N
N
N
IN
2
IN
2
A
(-
)
-
-
IN
2
B
(-
)
AC
S
P
DIII
PE
PE
E
A
RT
H
IN
2
C
(-
)
E
A
RT
H
A
C
O
u
tp
u
t t
e
rm
in
a
l s
ta
tio
n
DC
S
P
DII
I
DC
S
W
IT
CH
O
V
P
A
n
ti
-g
ra
ft
p
ro
te
c
tio
n
A
n
ti-
g
ra
ft
p
ro
te
c
tio
n
IN
1
A
(+
)
+
IN
1
B
(+
)
+T
/R
IN
1
C
(+
)
IN
1
-T
/R
R
S
4
8
5
G
ND
IN1
(+)
IN1
(+)
IN
1
A
(-
)
-
IN
1
B
(-
)
+R G
ND
R
E
M
O
T
E
C
O
N
T
R
O
L
N.C
IN
1
C
(-
)
IN1
(-
)
IN1
(-
)
IN1
(+)
IN1
(+)
N.O
A
L
A
R
M
IN
2
A
(+
)
C
+
IN1
(-
)
IN1
(-
)
IN2
(+)
IN2
(+)
IN
2
B
(+
)
IN
2
C
(+
)
IN
2
IN2
(+)
IN2
(+)
M
A
R
K
Upp
e
r p
a
rt
of
the
c
a
s
e
IN
2
A
(-
)
IN2
(-
)
IN2
(-
)
-
IN
2
B
(-
)
IN1
(-
)
IN1
(-
)
M
A
R
K
L
o
wer
p
a
rt
of
the
c
a
s
e
IN
2
C
(-
)
M
A
R
K
O
P
T
IO
NA
L
DC
In
p
u
t t
e
rm
in
a
l s
ta
tio
n
DC
C
A
B
L
E
G
L
A
N
D
PV
C
O
N
N
E
C
T
O
R
M
a
c
h
in
e
ty
p
e
s
S
0
/S
1
/S
2
/S
3
/S
4
/S
5