1 DB1 device series
1.9 Selection criteria
DB1 variable frequency drive
11/20 MN040031EN
Eaton.com
22
1.9 Selection criteria
Select the variable frequency drive according to the supply voltage U
LN
of the
supply mains and the rated current of the assigned motor.
The circuit type (
Δ
/
) of the motor must be selected according to the
supply voltage.
The variable frequency drive’s rated output current I
e
must be greater than or
equal to the rated motor current.
Figure 14: Selection criteria
When selecting the drive, the following criteria must be known:
•
Mains voltage = rated operating voltage of the motor (e.g. 3~ 400 V)
•
Type of motor (e.g., three-phase asynchronous motor)
•
Rated motor current (recommended value, depends on the circuit type
and the power supply)
￫
The DB1 series variable frequency drives are designed for instal-
lation on external cooling surfaces.
The rated currents I
e
are permissible up to an ambient tempera-
ture of 60 °C. Appropriate cooling must be taken into account
during configuration (
section 3.3.2, “Cooling measures”,
page 52).
The lower the ambient temperature, the more favorable the
cooling ratios.
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