Electrical Installation; Electrical Requirements - Lowara e-SVE Installation, Operation And Maintenance Manual

en – Original instructions

4.3 Electrical Installation

DANGER: Electrical hazard
The connection to the electric power supply must be completed by an electrician possessing the
technical-professional requirements outlined in the current regulations.

4.3.1 Electrical requirements

Local directives prevail on the specific requirements indicated below.
Electrical connection checklist
Check that the following requirements are met:
 The electrical leads are protected from high temperature, vibrations, and collisions.
 The current type and voltage of mains connection must correspond to the specifications on
 The power supply line is provided with:
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the electric pump. Inappropriate combinations do not
guarantee the protection of the unit.
Check that the following requirements are met:
 The control panel must protect the pump against short-circuit. A time lag fuse or a circuit
 The pump has built in overload and thermal protection, no additional overload protection is
DANGER: Electrical hazard
Before starting work on the unit, make sure that the unit and the control panel are isolated from
the power supply and cannot be energized.
Grounding (earthing)
DANGER: Electrical hazard
 Always connect the external protection conductor to the ground terminal before attempting to
 Connect all the electric accessories of the pump and the motor to the ground, making sure that
 Check that the protection conductor (ground) is longer than the phase conductors; in case of
Use a cable with several strands to reduce electric noise.
20
the data plate on the pump.
- A high-sensitivity differential switch (30 mA) [residual current device RCD] suitable for
earth fault currents with DC or pulsating DC content (a Type B RCD is suggested).
- A mains isolator switch with a contact gap of at least 3 mm.
breaker (Type C model is suggested) can be used to protect the pump.
required.
make any other electrical connections
the connections are completed correctly
accidental disconnection of the power supply conductor, the protection conductor (ground)
must be the last one to detach itself from the terminal.