Lorentz PSk3-7 User Manual

Controller Installation 3736 Controller Installation
1
6
4 9
2 7
3 8
5 10
EN ENFigure 12: Example conguration of dierent components
*It is the installer's duty to safely install the solar array according to local standards.
a
CAUTION – The wiring order will have
impact on the motor rotation direction.
The correct rotation direction is marked
with an arrow sticker on the pump and
motor.
CAUTION – Observe the rotation
direction of the pump when the system
installation is nished and the pump was
been successfully primed with water.
In case the rotation direction is incorrect exchange
any two of the three motor phases to reverse the
rotation direction.
7.4.1.4.2. Resistance measurement
We recommend checking the winding and insulation
resist ance before connecting the pump to the
controller. For a surface pump these measurements
should be done BEFORE taking the pump into
operation.
l
WARNING – Before starting any work
on the pump system, make sure that
the electricity supply has been switched
o and that it cannot be accidentally
switched on!
To measure the winding and insulation resistance
disconnect all motor leads from the controller. A
good quality multimeter is necessary to measure the
phase-to-phase resistance with an accuracy to the
rst decimal place. (“0.1 Ohms”). It is also advisable
to consider the resistance of the multimeter leads
when measuring very low values:
 Hold the tips of the multimeter together and note
the value.
a
NOTE – Always subtract this
value from your motor resistance
measurements!
Winding resistance
(1) Set the multimeter to “resistance measurement”
and select the lowest measuring range.
(2) All PSk3 motors are 3-phase motors. Measure
the resistance of phase-to-phase: 1-2, 2-3, 3-1.
Make sure there is good contact between the
probes and the cable.
(3) The deviation between the phases should be
within 10 %. If the deviation is too high, the
reason is likely a damaged submersible cable or
a faulty cable splice.
(4) The absolute value is made up of the resistance
of the motor winding and the submersible
cable. The resistance of the submersible cable
depends on its length and size. For copper cable
the values of the table "Table 6: Motor cable
resistance" on page 38 and "Table 7: Winding
resistances for surface pump motors" on page
39 can be used as a rough approximation.
PV Strings*
PV Disconnect 1000-40-5
PV Combiner 1000-125-4
PV Protect 1000-125
PSk3 Controller

Lorentz PSk3-7 Specifications

General

Brand	Lorentz
Model	PSk3-7
Category	Inverter
Language	English