4.3 Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply to the product including the power supply for the signal relays. Wait at least 5 minutes before you
make any connections in the terminal box. Make sure that the power supply cannot be switched on accidentally.
DANGER
Electric shock
Death or serious personal injury
‐
Check that the supply voltage and frequency correspond to the values stated on the nameplate.
DANGER
Electric shock
Death or serious personal injury
‐
It must be possible to lock the main switch in position 0. Type and requirements as specified in EN 60204-1 5.3.2.
If the power 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 correct earthing and protection according to local regulations.
All electrical connections must be carried out by qualified persons.
4.3.1 Protection against electric shock, indirect contact
WARNING
Electric shock
Death or serious personal injury
‐
Connect the product to protective earth and provide protection against indirect contact in accordance with local regulations.
Protective-earth conductors must have a yellow and green (PE) or yellow, green and blue (PEN) colour marking.
4.3.2 Protection against mains voltage transients
The product is protected against mains voltage transients in accordance with EN 61800-3.
4.3.3 Motor protection
The product incorporates thermal protection against slow overloading and blocking. No external motor protection is required.
4.3.4 Single-phase connections
The cables in the terminal box must be as short as possible. However, the separated protective earth conductor 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.
Check that the supply voltage and frequency correspond to the values stated on the nameplate.
If you want to supply the product through an IT network, make sure that you have a suitable product variant. If you are in doubt,
contact Grundfos.
Mains connection on a single-phase motor
PE
TM053494
11
English (GB)
