Wilo VeroLine-IPL Series Installation And Operating Instructions Manual page 39

Preparation/notes
Connection
W2 U2 V2
U1 V1 W1
WSK (optional)
WSK
L1 L2 L3
W2 U2 V2
U1 V1 W1
WSK (optional)
WSK
L1 L2 L3
Fig. 13: Mains connection 3~
Installation and operating instructions Wilo-IPL...N/DPL...N
• The electrical connection must be established via a fixed power cable,
which is provided with a plug device or an all-pole switch with a con-
tact opening width of at least 3 mm (in accordance with VDE 0730
Part 1 in Germany).
• The connection line is to be installed in such a way that it cannot
under any circumstances come into contact with the pipe and/or the
pump and motor housing.
• In order to ensure drip protection and strain relief on the threaded
cable connection, cables are to be used which have a sufficient outer
diameter and are to be screwed sufficiently tightly. To get rid of any
drips that accumulate, the cables are to be bent into a drain loop near
the threaded cable connection.
• Position the threaded cable connection or lay the cables accordingly
to ensure that no drips can run into the terminal box.
• Unused threaded cable connections must be sealed to ensure the
electrical protection class of the motor is maintained.
• When pumps are used in systems with water temperatures above
90 °C, a suitably heat-resistant power cable must be used.
• Check the current type and voltage of the mains connection.
• Observe the data on the rating plate of the motor. The current type
and voltage of the mains connection must correspond to the details
on the rating plate.
• Fuse on mains side: 16 A, slow-blow.
• Earth the pump/installation in accordance with the regulations.
NOTE
The connection diagram for the electrical connection can be found in
the terminal box cover (see also Fig. 13 - 15).
• For connection voltage see motor rating plate
• When connecting automatic switchgears/frequency converters,
observe the corresponding installation and operating instructions.
The following are to be observed in addition to other aspects:
• Appropriate cable with sufficient cross-section (max. 5 % voltage
loss).
• Connect correct shielding according to the recommendation of the
frequency converter manufacturer.
• Install data cables (e.g. PTC analysis) separately from the mains
cable.
• Possible utilisation of a sine filter (LC) upon consultation with the
frequency converter manufacturer.
English
35