Technical data

PV GRID
CONNECTED
14|
|15
Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon [phone] | Fax [phone] | www.stecasolar.com
Inverter
Connection examples
for DC disconnect
Master Master + Slave Master + Slave + Slave
Independent inputs (2 MPP trackers)
2 MPP-optimised module strings*
2 module strings are connected to the two inputs
of a master. Each string is controlled via its own
MPP tracker for optimum yield.
The 4-pin switch is installed near the inverter as
a DC disconnect.
4 MPP-optimised module strings*
2 module strings are connected to the four inputs
of a master/slave system. Each string is controlled
via its own MPP tracker for optimum yield.
In variant (a) the DC disconnect is made up of two
switches; in variant (b) there is just one switch.
6 MPP-optimised module strings*
6 module strings are connected to the six inputs of
a master/slave/slave system. Each string is control-
led via its own MPP tracker for optimum yield.
Each inverter has its own DC disconnect.
1 MPP-optimised module string*
1 module string is connected to the parallel-con-
nected inputs of a master and controlled via an
MPP tracker for optimum yield.
The parallel connection of the inputs is particular-
ly suitable for high module currents (up to 16 A!)
or for saving on DC cabling.
2 MPP-optimised module strings*
2 module strings are connected to the respective
parallel-connected inputs of a master/slave sys-
tem and controlled for optimum yield.
In variant (a) the DC disconnect is made up of two
switches; in variant (b) there is just one switch.
3 MPP-optimised module strings*
3 module strings are connected to the respective
parallel-connected inputs of a master/slave/slave
system and controlled for optimum yield.
In variant (a) the DC disconnect is made up of
three switches; in variant (b) there is just one
switch.
Parallel inputs (1 MPP tracker)
(a) (b)
(a) (b) (a) (b)
*Negative poles are internal bridged in the inverter.
4-pole
2x
4-pole
6-pole
3x
4-pole
4-pole
2x
4-pole
4-pole
3x
4-pole
6-pole