English
36
Salmson 12/2017
Installation/setting of the motor
protection switch
• 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 nominal motor current.
• In special version K3 (also see chapter 5.1 “Type key” on page 28) the
motor is equipped with PTC thermistor sensors. Connect the PTC
thermistor sensors to the PTC thermistor tripping unit.
Standby heating connection
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).
Fig. 14: Mains connection 1~ with operating
capacitor
Fig. 15: Mains connection 1~ with starting and
operating capacitor
Z1
CB
U1
L
N
Z
2
U
2
Z
2
U
2
Set bridges horizontally for reversal
of rotation direction.
Z1
BK
RV
Z
2
L
N
GY
RD
U1
U
2
WH
CA
CB
RE
2
4
3
