Technical data

Solar Home Systems Solar Home Systems
Steca PF 166
Solar refrigerator/freezer
12 / 24 V
(page 48)
Steca PF 166
Steca Solsum F
Solar charge controller
5 - 10 A, 12 / 24 V
(page 25)
Steca Solsum F
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Steca PL 2085
Solar charging point
8 x 5 A, 12 V
(page 34)
Steca PL 2085
Steca Solarix PRS
Solar charge controller
10 - 30 A, 12 / 24 V
(page 29)
Steca Solarix PRS
Steca Solsum ESL
Energy-saving light
5 W, 7 W, 11 W / 12 V
(page 49)
Steca Solsum ESL
Steca ULED 11
Energy-saving light
1.1 W / 12 V
(page 50)
Steca ULED 11
DC
A
C
E
B
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Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon [phone] | Fax [phone] | www.steca.com
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Overview of devices:
The solar charge controller is connected directly to
the battery using a cable as short as possible, and
fixed to the wall near to the battery, so that it can be
effectively cooled by the passing air flow.
In principle, the battery is always connected to the
solar charge controller first. Then the solar modu-
le array is connected to the solar module input of
the solar charge controller. Only direct current loads
are used in solar home systems. They are connected
directly to the load output of the solar charge con-
Steca PR
Solar charge controller
3 - 5 A, 12 V
(page 24)
Steca PR
troller. This means the Steca solar charge controllers
always show the battery‘s exact state of charge, and
thus ensure optimal battery maintenance in all situa-
tions. Various Steca energy-saving lights, Steca solar
cooling units, DC-to-DC converters and other loads
can be used.
Key:
A Solar modules
B Solar charge controller
C Battery
D Generator junction box
E Electrical load
A solar home system consists of a Steca solar charge
controller, one or more solar modules, a battery and
the connected loads.
The Steca solar charge controllers control the energy
flow of the entire system. They make sure that the
solar module charges the battery quickly and effec-
tively, but they also protect the battery against over-
charging. If the loads discharge the battery, the solar
charge controller, thanks to its precision in calcula-
ting the state of charge, switches off the load at ex-
actly the right moment, thus protecting the battery
from the dangers of deep discharge.
Furthermore, Steca solar charge controllers are
equipped with an intelligent battery monitoring sys-
tem. The most effective charging method is selected
according to the requirements of the batteries. The
solar charge controller is the central controlling
component in solar home systems, for it affects all
the functions of the system. For this reason, it is im-
portant to choose a reliable and high-performance
solar charge controller.
Solar home
systems
with Steca solar charge controllers.
Steca Solsum VC
Voltage converter
1,5 A, 3 / 6 / 7,5 / 9 / 12 V
(page 46)
Steca PR
Solar charge controller
10 - 30 A, 12 / 24 V
(page 27)
Steca Solarix MPPT
Maximum Power Point Tracker
20 A, 12 / 24 V
(page 30)
South Africa
Sri Lanka Australia