4 Specifications
Application 5
4 Application
The LORENTZ PowerPack PP4000S allows PS2-4000
systems to be powered by an AC power supply
from the grid or a generator*. Typical uses are for
powering the system overnight or for meeting higher
water demands in low solar power situations. If PV is
disconnected, a separate timer switch can be used
to control the AC power supply to the PowerPack
in cases where scheduled use of the PowerPack is
necessary (e.g. to extend pumping time).
Figure 1: System layout
The PowerPack can be remotely activated through
its remote-control terminals by means of a separate
switch or a contact signal. Further details can be
found in section 4.2.
*Running the pump with a PowerPack can reduce the
maximum speed of the pump in some applications.
PV disconnect
PS2-4000 controller
PowerPack 4000S
PV generator
submersible pump
AC mains supply
(grid or generator)
PV disconnect
