EN
Introduction
Up to 4 Steca Solarix PI 550, PI 550-L60 or PI 1100 stand-alone inverters can be
operated in parallel with the PAx4 parallel switch box. Up to 2 Steca Solarix PI
1100-L60 can be connected parallel to the PAx4. In this case one inverter works
as a master, all the others as slaves.
The PAx4 parallel switch box has 2 outputs (230 V or 115 V, depending on the
connected inverters). Consequently the loads can be divided into 2 circuits.
The parallel switch box also allows communication with Tarom or Power Tarom
charge controllers. This allows the PV system to be controlled depending on
SOC*.
Example of a possible application.
G
E
Key:
A
Solar module
B
Solar charge controller
C
Battery
D
Sine wave inverter
Steca Solarix PI
E
Parallel switch box
F
Generator junction box
G
Electric load (230 V or 115 V)
Possible configurations
Parallel
Master
operation
2 x PI 550
3 x PI 550
1 x PI 550
4 x PI 550
2 x PI 550-L60
3 x PI 550-L60
1 x PI 550-L60
4 x PI 550-L60
2 x PI 1100
3 x PI 1100
1 x PI 1100
4 x PI 1100
2 x PI 1100-L60 1 x PI 1100-L60
3 x PI 1100-L60 Invalid configuration!
4 x PI 1100-L60 Invalid configuration!
* State Of Charge (you will find more details on our website: www.steca.com).
725259 | Z04 | 2012-11-06
F
B
D
C
Slave(s)
1 x PI 550
2 x PI 550
3 x PI 550
1 x PI 550-L60
2 x PI 550-L60
3 x PI 550-L60
1 x PI 1100
2 x PI 1100
3 x PI 1100
1 x PI 1100-L60
A
Continuous
output
1000 W
1500 W
2000 W
1000 W
1500 W
2000 W
1800 W
2700 W
3600 W
1800 W
15