Technical data

Solsafe Technology Solsafe Technology
Steca Compact
Sine wave inverter
1,600 W - 4,000 W
(page 40)
Steca Compact
ARM-01
Relay module
for Steca sine wave
inverter
AC
AC
AC
DC
DC
A
D
C
B
E
F
G
H
StecaGrid 10000 3ph
Grid inverter
10,000 W up to several 100,000 W
StecaGrid 9000 3ph
(not shown)
(Steca PV Grid Connected)
StecaGrid 10000 3ph
Steca Xtender XTH
Sine wave inverter
3,000 W - 72,000 W
(page 44)
Steca Xtender XTM
Sine wave inverter
1,500 W - 36,000 W
(page 42)
Steca Xtender XTM
Solasafe S-Box
Anti-blackout system
for Steca sine wave
inverter
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Steca Elektronik GmbH | 87700 Memmingen | Germany | Fon [phone] | Fax [phone] | www.steca.com
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Why choose Steca Solsafe?
It allows great system flexibility. The grid inverter
is designed according to the PV generator, and
the sine wave inverter according to the desired
emergency power supply.
The PV system’s output and operating voltage
can be freely selected, and do not depend on the
size and battery voltage of the emergency power
supply.
It should be noted, however, that the AC output
of the grid inverter may never be greater than
the rated output of the sine wave inverter.
The PV voltage of the grid inverter does not
depend on the battery voltage.
Existing grid-connected solar power systems can
be fitted with Steca Solsafe without alterations
of any kind.
The available PV capacity is added to that of
the sine wave inverter in the event of a power
outage, or the solar power is stored in the
battery.
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Overview of devices:
Steca XPC
Sine wave inverter
1,400 W - 2,200 W
(page 39)
Steca XPC
StecaGrid 2010+
Grid inverter
2,000 W up to several 10,000 W
StecaGrid 2000+,
StecaGrid 1900
(not shown)
(Steca PV Grid Connected)
Steca HPC
Sine wave inverter
2,800 W - 8,000 W
(page 41)
Yet, in the event of a power outage, the grid-con-
nected PV system also stops working. This means
that although power may be available, it cannot be
used. The Solsafe system offers a simple, efficient
and cost-effective solution to this problem.
Installing one of our combined inverters Steca XPC,
Steca Compact, Steca HPC, Steca Xtender XTM or
Steca Xtender XTH with the supplementary ARM-01
relay module and a battery system turns any grid-
connected PV system into an emergency power sup-
ply in the event of a power outage. If the public grid
is available, the electrical output generated by the
solar modules is fed directly into the grid by the grid
inverter (B) and the grid-feed electricity meter (D).
In parallel to this, the unsupplied loads (H) receive
power directly from the grid, via the consumption
electricity meter (E). The batteries are kept fully char-
ged from the public grid via the hybrid system inver-
ter (F), and, if necessary, they are recharged. Further-
more, the supplied loads (G) receive power from the
public grid during transfer mode.
If there is a grid outage, the hybrid system inver-
ter automatically switches mode to operate as a sine
wave inverter, and continues to feed power to the
supplied loads (G) without any interruption. Because
the grid inverter can no longer supply power to the
grid, its output is channelled directly to the supplied
loads (G) by the ARM-01 relay module (C). In this
way, the loads can receive power directly from the
grid inverter of the solar modules. At the same ti-
me, the battery can be recharged with the available
solar energy, which increases the length of time for
which the supplied loads can receive power during
the night.
With this set-up, the capacity of the battery can be
kept small, allowing for an optimal design of system
costs.
The Solsafe system is fully automatic, and can be in-
tegrated into any new or existing PV system.
Solsafe ensures the power supply, and furthermore al-
lows the solar energy to be fully utilised.
Key:
A Solar modules
B Grid inverter
C Relay module ARM-01
D Grid-feed electricity meter
E Consumption electricity meter
F Sine wave inverter
G Supplied loads
H Unsupplied loads
Steca Solsafe
Blackout - and yet it stays light!
Large-scale power supply failures are beco-
ming increasingly common. With emergency
systems such as generators or uninterruptib-
le power supplies (UPS), the power supply
can be assured.
StecaGrid 300 and
StecaGrid 500
Grid inverter
300 W - 3,600 W
(Steca PV Grid Connected)
StecaGrid 300 and