Circuit Types For Three-Phase Motors - Eaton PowerXL DB1 Installation Manual

2 Engineering
2.8 Three-phase motors

2.8.2 Circuit types for three-phase motors

36
Based on the mains voltage (
the motor's nameplate (rating plate), the stator winding of a three-phase
motor can be configured as a star or delta circuit.
230/400 V 3.2/1.9 A
0,75 KW cos ϕ 0.79
-1
1410 mi n
Figure 12: Example of a nameplate (rating plate)
for a three-phase asynchronous motor
U1 V1 W1 U1 V1 W1
W2 U2 V2 W2 U2
Figure 13: Configuration types:
Star circuit (left), delta circuit (right)
Examples based on figures 12and 13
Motor with star circuit configuration,
Mains voltage: 3~ 400 V; Output voltage: 3~ 400 V
￫ DB1-342D2...
Motor with delta circuit configuration,
Mains voltage: 1~ 230 V; Output voltage: 3~ 230 V
￫ DB1-124D3...
Motor connection
DB1
variable frequency drive
U
V
W
DB1 Variable Frequency Drives 09/17 MN040031EN www.eaton.com
= output voltage U
LN
50 Hz
V2
as per as per
IEC UL
U1 (-U2) T1 (-T4)
V1 (-V2) T2 (-T5)
W1 (-W2) T3 (-T6)
) and the rated data on
2