Electrical Installation; Mains Supply - Grundfos Hydro Multi-E Series Installation And Operating Instructions Manual

6.4 Electrical installation

Carry out the electrical connection according to local regulations.
Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
DANGER
Electric shock
Death or serious personal injury
- Switch off the power supply and wait at least five
minutes before you make any connections in the
breaker cabinet or terminal boxes. Make sure that
the power supply cannot be accidentally switched
on.
- Connect the motor to protective earth and protect
against indirect contact according to local
regulations.
- Installation must be carried out by trained
personnel.
If the power supply cable is damaged, it must be replaced by the
manufacturer, the manufacturer's service partner or a similarly
qualified person.
The user or the installer is responsible for the installation of
correct earthing and protection according to local regulations. All
operations must be carried out by a qualified electrician.
The booster system must be stationary and installed permanently.
Furthermore, connect the booster system permanently to the
power supply.
Carry out the earth connection as duplicate conductors.
If the system cannot be installed with the supply disconnecting
device located minimum 0.6 m above service level according to
EN 60204-1 paragraph 5.3.4, install the system with an external
"supply disconnecting device" made according to EN 60204-1,
paragraph 5.3.2. The system must be provided with a means
permitting it to be locked in OFF (isolated) position.
6.4.1 Protection against electric shock, indirect contact
WARNING
Electric shock
Death or serious personal injury
- Connect the motor to protective earth and protect
against indirect contact according to local
regulations.
Protective-earth conductors must always have a yellow and
green (PE) or yellow, green and blue (PEN) colour marking.
Protection against mains voltage transients
The motor is protected against mains voltage transients in
accordance with EN 61800-3.
Motor protection
The motor requires no external motor protection. The motor
incorporates thermal protection against slow overloading and
blocking.
6.4.2 Insulation resistance
Do not measure the insulation resistance of motor
windings or an installation incorporating motors with
integrated frequency converters using high-voltage
megging equipment as this may damage the built-in
electronics.
8

6.5 Mains supply

Check that the supply voltage and frequency correspond to the
values stated on the nameplate.
Use dedicated IT network motors if the booster
system is supplied through an IT network. Contact
Grundfos.
The wires in the breaker cabinet must be as short as possible.
Excepted from this is the separated earth conductor which must
be so long that it is the last one to be disconnected in case the
cable is inadvertently pulled out of the cable entry.
For maximum backup fuse, see section
ELCB
Installation in building
Fig. 11 Example of a mains-connected Hydro Multi-E with
backup fuses and additional protection (applies only
for systems with single-phase motors)
For maximum backup fuse, see section
ELCB
(GFCI)
Installation in building
Fig. 12 Example of a mains-connected Hydro Multi-E with
backup fuses and additional protection (applies only
for systems with three-phase motors)
25.1 Supply voltage.
Breaker cabinet
26.1 Supply voltage.
Breaker cabinet