Eaton PowerXL DC1 Series - 1.8 Selection criteria

1 DC1 device series
1.8 Selection criteria
22 DC1 variable frequency drive 12/13 MN04020003Z-EN www.eaton.com
1.8 Selection criteria
Select the variable frequency drive according to the supply voltage U
LN
of
the supply system and the rated operational current of the assigned motor.
The circuit type ( / ) of the motor must be selected according to the
supply voltage.
The rated output current I
e
of the variable frequency drive must be greater
than or equal to the rated motor current.
Figure 9: Selection criteria
When selecting the drive, the following criteria must be known:
• Type of motor
• Mains voltage = rated operating voltage of the motor (e. g. 3~ 400 V),
• Rated motor current (recommended value, dependent on the circuit type
and the power supply)
• Load torque (quadratic, constant),
• Starting torque,
• Ambient air temperature (rated value e. g. +40 °C).
• Ambient conditions (control cabinet installation for IP20 degree of
protection and direct local installation for IP66 degree of protection)
￫
When connecting multiple motors in parallel to the output of a
variable frequency drive, the motor currents are
added geometri-
cally
– separated by effective and idle current components.
When you select a variable frequency drive, make sure that it
can supply the total resulting current. If necessary, for damp-
ening and compensating the deviating current values, motor
reactors or sine filters must be installed between the variable
frequency drive and the motor.
1410 mi n
230/400 V 3.2/1.9 A
50 Hz
-1
0,75 KW
cos ϕ 0.79
P-07
P-08
P-10
P-09
L1/L
L2/N
L3
U
V
W
1
2
3
4
5
6
7
8
9
1
0
11

