Grounding - Lorentz PS2-150 Manuel D'installation Et De Fonctionnement

30 Controller Installation

7.6.6 Grounding

Before starting to work on the electrical system make sure
that all components are disconnected from the power
source. Only switch on the system when you have finished
all work.
Grounding is mandatory to protect the users from potential-
ly fatal electric shocks. It also protects against electric charg-
ing or a short circuit inside the device. This is accomplished
through clamping, bolting or other mechanical means to
provide an effective grounding path to the earth to ensure
safe operation at all time.
The grounding is also important to the system for lightning
protection. In general it is meant for indirect lightning strikes
and induced electrical potentials during operation of the
pump system.
Before installation, contact the local code authorities to
determine the necessary grounding requirements.
Insufficient ground source: Where there is an
inadequate ground source you can use a grounding rod.
A grounding profile rod should be located not more than
4 – 5m (13 – 16 ft) from the controller. The cable must not
carry any mechanical loads. The rod must be completely bur-
ied in the ground (2.5 m/8 ft below ground level). You must
refer to local standards and requirements. The grounding
cable should be a copper cable with a cross section of not
less than 16 mm (AWG 6).
2
A protective earth connection must be linked to the
controllers earth connector which is located below the pcb
and marked with the protective earthing symbol
protective earth wire of the motor must also be connected
to the controllers earth connector.
The protective earth connection can also be linked to the
grounding bolt on the outside of the controller near the
cable glands.
All metallic support structures and electrical enclosures must
be grounded.
For grounding of the PV generator, follow manufacturer
instructions.
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