en
– Original Instructions
18
4.2 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.
4.2.1 Electrical requirements
Local directives prevail on the specific requirements indicated below.
Electrical connection check list
Check that the following requirements are met:
The electrical leads are protected from high temperature, vibrations, and collisions.
The main power supply current and voltage must meet the specifications on the data plate on
the unit
The power supply line is provided with:
- A mains isolator switch with a contact gap of at least 3 mm.
Ground fault circuit breaker (GFCI), or residual current devices (RCD), also known as
automatic earth leakage circuit breakers (ELCD); comply with the following:
- For single-phase power supply versions use GFCI (RCD), which are capable of detecting
alternate currents (AC) and pulsing currents with DC components. These GFCI (RCD) are
marked with the following symbol
- For three-phase power supply versions use GFCI (RCD), which are capable of detecting
AC and DC currents. These GFCI (RCD) are marked with the following symbols
- Use GFCI (RCD) with a starting delay, to avoid problems due to transient earth currents.
- The size of the GFCI (RCD) must comply with the system configuration and the
environmental conditions.
NOTICE:
When selecting an automatic earth leakage circuit breaker or a ground fault circuit breaker, make
sure to consider the total earth leakage current of all the electric devices of the system.
The electrical control panel checklist
NOTICE:
The control panel must match the ratings of the pump unit. 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 C type
circuit breaker (MCB) can be used to protect the pump.
The pump is fitted with thermal and overload protection.
DANGER: Electrical hazard
Before completing any electrical connections, make sure that the unit and the electric panel
are isolated from the power supply and cannot be energized.
Contact with electric components may cause death, even after the unit has been switched off.
Before any interventions on the unit, the network voltage and any other input voltages must be
disconnected for the minimum time indicated in Table 9.
