Product Specification; General - Lorentz PSk2-7 Manual De Instalación Y Operación

4 Product Specification

4.1 General

LORENTZ PSk2 solar submersible and surface pump systems
are vertical multi stage pumps designed to efficiently deliver
the highest volumes of water from a solar power source.
PSk2-C-SJ submersible and PSk2-CS surface pumps are
typically used in irrigation projects and for wide area drink-
ing water applications where they reliably meet the most
demanding requirements, economically, without pollution
and without a grid connection or diesel generator.
The system is composed of a PV generator array, a pump
and a solar pump controller. Based on the design philosophy
that it is more efficient to store water rather than electricity,
there is no energy storing device such as storage battery in
the system.
The PV generator, an aggregation of PV modules connected
in series and in parallel, absorbs solar irradiation and
converts it into electrical energy, providing power for the
whole system. The pump controller controls and adjusts the
system operation and converts the DC produced by the PV
generator into AC to drive the pump, and adjusts the output
frequency in real-time according to the variation of sunlight
intensity to realize the maximum power point tracking
(MPPT).
The PSk2 controller converts the DC power from the solar
array to digitally created AC signal to run the motor. Motor
speed (RPM) is proportional to the signal frequency.
Each system consists of a pump, pump motor and a control-
ler. This modular concept keeps all electronics above ground,
simplifying servicing and lowering cost of ownership.
Product Specification
For surface pumps
The PSk2 CS-F and CS-G pumps are centrifugal pumps,
driven by a 3-phase air cooled AC motor.
The main difference between the CS-F and CS-G series is
the structural design. CS-F are vertical multi-stage, CS-G are
single stage pumps.
For submersible pumps
The frequency starts low (about 20 Hz), and increases
gradually to a maximum about 60 Hz.
The PSk2-CSJ pumps are centrifugal pumps driven by a
3-phase water cooled AC motor.
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