Circuit Types With Three-Phase Motors - Eaton PowerXL DC1 20 Series Installation Manual

2 Engineering
2.11 Three-phase motors

2.11.2 Circuit types with three-phase motors

56
A three-phase motor's stator winding can be connected in a star connection
or delta circuit as per the mains voltage (U
rated operational data on the motor's nameplate (rating plate).
230/400 V 3.2/1.9 A
0,75 KW cos ϕ 0.79
-1
1410 mi n
Figure 20: Example of a nameplate (rating plate)
for a three-phase asynchronous motor
U1 V1 W1 U1 V1 W1
W2 U2 V2 W2 U2
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 according to
frequency drive IEC
U U1 (-U2)
V V1 (-V2)
W W1 (-W2)
DC1...20... and DC1...OE1 Variable Frequency Drives 02/20 MN040059EN www.eaton.com
50 Hz
V2
according to
UL
T1 (-T4)
T2 (-T5)
T3 (-T6)
= output voltage U
LN
) and the
2