Wilo VeroLine-IPL Notice De Montage Et De Mise En Service page 35

Setting the motor protection switch:
W2 U2 V2
U1 V1 W1
L1 L2 L3
W2 U2 V2
U1 V1 W1
L1 L2 L3
W2 U2 V2
U1 V1 W1
Fig. 11: Mains connection
Start-up type
Direct
Y-∆ starting
Standby heating connection
Installation and operating instructions Wilo-IPL/DPL (1.1-7.5 kW)
• Observe the rating plate information for the pump. The current type
and voltage of the mains connection must correspond to the details
on the rating plate.
• Fuse protection on mains side: Dependent on nominal motor rating
• Earth the pump/installation in accordance with the regulations.
• The motor must be secured against overloading using a motor pro-
tection switch or the PTC thermistor tripping unit.
NOTE
• The connection diagram for electrical connections is in the cover of
the terminal box cover (see also fig. 11).
• The use of a motor protection switch is necessary.
• Set according to the nominal motor current specified on the rating
plate of the motor, Y-Δ starting: If the motor protection switch is
switched in the supply line to a Y-Δ contactor combination, set the
switch as for direct starting. If the motor protection switch is switched
in a thread of the motor supply line (U1/V1/W1 or U2/V2/W2), set the
motor protection switch to 0.58 x rated motor current.
• In the K3 special version (see also chapter 5.1 "Type key" on page 26)
the motor is equipped with a PTC thermistor sensor. Connect the PTC
thermistor sensors to the PTC thermistor tripping unit.
• The mains connection to the terminal board is dependent on the
motor power P
mended switching arrangement of the connection bridges in the ter-
minal box should be taken from the following table and fig. 11.
• For connection voltage see motor rating plate
• When connecting automatic switching devices, observe the relevant
installation and operating instructions.
Motor power P
Mains voltage 3 ~ 230 V
∆-circuit (fig. 11 top)
Remove connection bridges
(fig. 11 below)
We recommend standby heating for motors which, due to climatic
conditions, are at risk of condensation (e.g. stationary motors in moist
atmospheres, or motors exposed to extreme variations in tempera-
ture). Corresponding motor variations which are equipped with
standby heating at the factory, can be ordered as a special version.
Standby heating is used to protect the motor windings against con-
densation water inside the motor.
• The standby heating is connected to the terminals HE/HE in the ter-
minal boxes (connection voltage: 1~230 V/50 Hz).
, the mains voltage and the start-up type. The recom-
2
 3 kW
2
Mains voltage 3 ~ 400 V
Y-circuit (fig. 11 centre)
not possible
English
Motor power P  4 kW
2
Mains voltage 3 ~ 400 V
∆-circuit (fig. 11 top)
Remove connection bridges
(fig. 11 below)
33