salmson SIL Serie Instalacion Y Puesta En Servicio página 61

W2
PTC
U1
L1
Fig. 45: Y-Δ-start (standard)
W2 U2
PTC
U1 V1
Fig. 46: Δ connection
Installation and operating instructions SIL, PBS (with cartridge mechanical seal)
U2 V2
V1 W1
L2 L3
V2
W1
• To get rid of any drips that accumulate, the cables are to be bent into
a drain loop near the threaded cable connection.
• By positioning the threaded cable connection or by laying the cables
accordingly, ensure that no drips can enter the terminal box. Non-
assigned threaded cable connections must remain sealed with the
plugs provided by the manufacturer.
• The connection pipe is to be placed in such a way that it can under no
circumstances come into contact with the pipe and/or the pump and
motor housing.
• When pumps are used in systems with water temperatures
above 90 °C, a suitably heat-resistant connection pipe 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 41).
NOTE:
The connection diagram for the electrical connection is in the
terminal box (also see Fig. 4546).
Setting the motor protection switch:
• Adjust according to the rated motor current specified on the name
plate of the motor.
Y-Δ start: If the motor protection switch is switched in the supply line
to a Y-Δ contactor combination, adjust the switch as for direct start-
ing.
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
sensors. Connect the PTC thermistor sensors to the PTC thermistor
tripping 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 to the terminal board is dependent on the
motor power P , the mains voltage and the activation type. The
2
recommended switching arrangement of the connection bridges in
the terminal box should be taken from the following list "Table 4:
Connection terminal assignment" on page 50 and Fig. 45/46.
• When connecting automatic switchgears, observe the relevant
installation and operating instructions.
• For three-phase current motors with Y-Δ connection, be sure that the
switch-over points between star and triangle are very close together
in time. Longer switch-over times can lead to pump damage.
English
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