Eaton PowerXL DC1 20 Series - Circuit Types with Three-Phase Motors

2 Engineering
2.11 Three-phase motors
56 DC1…20… and DC1…OE1 Variable Frequency Drives 02/20 MN040059EN www.eaton.com
2.11.2 Circuit types with three-phase motors
A three-phase motor’s stator winding can be connected in a star connection
or delta circuit as per the mains voltage (U
LN
= output voltage U
2
) and the
rated operational data on the motor’s nameplate (rating plate).
Figure 20: Example of a nameplate (rating plate)
for a three-phase asynchronous motor
Figure 21: Configuration types:
Star-connected circuit (left), Delta circuit (right)
Examples based on figures 20 and 21
Motor in star connection,
mains voltage: three-phase 400 V; output voltage: three-phase 400 V

DC1-342D2…
Motor in delta circuit,
mains voltage: single-phase 230 V; output voltage: three-phase 230 V

DC1-124D3…
Motor connection
DC1 variable
frequency drive
according to
IEC
according to
UL
U U1 (-U2) T1 (-T4)
V
V1 (-V2) T2 (-T5)
W W1 (-W2) T3 (-T6)
1410 mi n
230/400 V 3.2/1.9 A
50 Hz
-1
0,75 KW
cos ϕ 0.79
U1 V1 W1
W2 U2 V2
U1 V1 W1
W2 U2 V2