Product Description; General; Features; Naming - Lorentz PS15k2 C-SJ42-6 Manual

7 Product Description

7 1 General

LORENTZ PSk2 solar submersible pump systems are vertical
multi stage pumps designed to efficiently deliver the high-
est volumes of water across a wide range of lifts. PSk2-C-SJ
submersible pumps are typically used in irrigation projects
and for wide area drinking water applications where they
reliably meet the most demanding requirements, economi-
cally, 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 sa
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. Due to
the special nature of this PWM signal it cannot be meas-
ured with a multimeter. Motor speed (RPM) is proportional
to the signal frequency. The frequency starts low (about
20 Hz), and increases gradually to a maximum about 60 Hz.
The PSk2 C-SJ pumps are centrifugal pumps, driven by a
3-phase water cooled AC motor.
Each system consists of a pump, pump motor and a
controller, this modular concept keeps all electronics above
ground, simplifying servicing and lowering cost of owner-
ship.
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
differ from actual products depending on local market requirements and regulations.

7 2 Features

LORENTZ PSk2-C-SJ series has the following features:
ƒ Engineered in Germany using high quality non
corrodible materials
ƒ IP54 / NEMA 3A corrosion resistant housing
ƒ 0 – 60Hz motor speed control
ƒ Wide range of inputs to influence pump behaviour
ƒ Integrated monitoring and management including
onboard recording of 5 years performance data, smart
device access via PumpScanner Android™ App and
integration to LORENTZ pumpMANAGER remote
management service
ƒ Inbuilt irradiation measurement and pump control based
on power available
ƒ Integration with the LORENTZ SmartPSU for grid / gen-
erator connection and power blending
7

7 3 Naming

Pump model definition
for C-SJ8-44 to C-SJ75-4 pumps
C - SJ
12 - 9
number of impellers
rated flow (m³/h)
submersible
centrifugal
for CS-SJ120-2-1 pumps
C - JS 120 - 2 - 1
number of small impellers
number of impellers
rated flow (m³/h)
submersible
centrifugal
Sun. Water. Life.