salmson SIL Serie Instalacion Y Puesta En Servicio página 54

Adjusting 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. 17: Mains connection
Activation type
Direct
Y- starting
Table 4: Connection terminal assignment
Installation and operating instructions SIL, DIL, PBS
• When pumps are used in systems with water temperatures above
90 °C, a suitably heat-resistant mains connection cable must be used.
• Check the current type and voltage of the mains connection.
• 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 rated motor current.
• Take additional earthing into account!
• The motor must be secured against overloading using a motor pro-
tection switch or the PTC thermistor tripping unit (see chapter 5.4
"Accessories" on page 36).
NOTE:
The connection diagram for electrical connections is in the cover of
the terminal box cover (see also Fig. 17).
• Adjust according to the rated motor current specified on the rating
plate of the motor, Y- starting: If the motor protection switch is
switched in the supply line to a Y- 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.
• The special version of the motor is equipped with PTC thermistor sen-
sors. Connect the PTC thermistor sensors to the PTC thermistor trip-
ping unit.
CAUTION! Risk of property damage!
Risk of damage due to incorrect handling.
• Only a maximum voltage of 7.5 V DC may be applied to the
PTC thermistor sensor terminals. A higher voltage will destroy
the PTC thermistor sensor.
• The mains connection is dependent on the motor power P
voltage and the activation type. The recommended switching
arrangement of the connection bridges in the terminal box should be
taken from the following list "Table 4: Connection terminal assign-
ment" on page 45 and Fig. 17.
• When connecting automatic switchgears, observe the relevant
installation and operating instructions.
Motor power P
Mains voltage 3~ 230 V
-connection (Fig. 17 top)
Remove connection bridges
(Fig. 17 below)
NOTE:
Use of soft starters is recommended to limit the starting current and
preventing tripping of excess current protection devices.
3 kW
2
Mains voltage 3~ 400 V
Y-connection (Fig. 17 centre)
not possible
English
, the mains
2
Motor power P 4 kW
2
Mains voltage 3~ 400 V
-connection (Fig. 17 top)
Remove connection bridges
(Fig. 17 below)
45