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

2 Engineering
2.5 Motor
38 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
2.5.3 Circuit types with three-phase motors
The three-phase motor's stator winding can be connected in a star or delta
circuit as per the rated operational data on the rating plate.
Figure 14: Example of a motor rating plate
Figure 15: Configuration types:
Star-connected circuit (left), Delta circuit (right)
NOTICE
If multiple motors are connected in parallel to a single variable
frequency drive, make sure to dimension the individual motors'
contactors as required for utilization category AC-3.
The
motor contactors must be selected according to the rated
operational currents of the motors that will be connected.
￫
If several motors are being run in parallel, you will not be able to
use the variable frequency drive's electronic motor protection.
Each motor will have to be protected individually with thermis-
tors and/or an overload relay.
￫
Within a frequency range of 20 to 120 Hz, the PKE electronic
motor-protective circuit-breaker can be used for motor protec-
tion at the variable frequency drive's output as well.
￫
For more information, please refer to application note
AP040048.
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