Lorentz PS2-150 Series Manual For Installation And Operation page 65

9.8 Surge Protector
CAUTION – Installing a surge protector at
all well probe and remote switch sensor
inputs is recommended, damaged inputs
due to electric surges are not covered by
the warranty.
CAUTION – Surge protectors provide an
extended protection, not a guaranteed
safety. Damages caused by electric surges
are not covered by warranty.
CAUTION – When installing surge
protectors, correct polarity must be
ensured.
Surge protectors are designed to protect electrical devices
from voltage spikes. The surge protectors are to be con-
nected in series to the sensor/input, ideally within the PS
controller case. It can only be used for well probe, remote
switch and water meter terminals. It can not be used for
analog input 1, 2, water sensor and the relay output. For
more information on the surge protector please refer to the
datasheet in COMPASS.
Figure 28: Surge Protector
Pump Accessories Installation
9.9 PV Disconnect with Lightning Surge Protection
The LORENTZ PV Disconnect series is a PV connection box
with an integrated disconnect switch and optional integrat-
ed lightning surge protector. The box is designed to connect
one PV module string (6 strings for the 440-40-6) with the
pump controller by using the terminal clamps located inside
the box. The DC-rated disconnect switch is used as a manual
circuit breaker between the solar array and the load. This
switch is easily accessible by opening the hinged lid at the
bottom spring lock.
The use of a properly sized DC disconnect switch is an
important safety measure and obligatory for a professional
installation of a solar pumping system. The switch must
be installed between the solar generator and the pump
controller. It must meet the electrical requirements of the
connected devices. The PV Disconnect has been designed to
cover the range of PS pump systems PS2-150 to PS2-4000.
Optionally a lightning surge protection device can be
purchased from LORENTZ that fits into a pre-built hole of
the PV Disconnect. It requires proper grounding to fulfil its
protective function. There are a number of different devices
available to suit the voltage level of each controller type.
For more information on installing the PV Disconnect please
refer to the PV Disconnect manual.
Figure 29: PV Disconnect with surge protection
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