ABB ACS800-04 Hardware Manual page 140

140 Non-ABB du/dt filter selection
Note: Impedances over 1.5% or 2% can be used, but then the voltage drop across
the filter will be increased, thus reducing the pull-out torque and attainable
power.
u t
2. The d /d value of the inverter output voltage is approximately
5 kV / microsecond. The filter limits the d
less than 1 kV / microsecond.
3. The filter withstands the continuous current of the drive (
the filter core is not allowed up to the maximum output current of the drive
I
( ).
max
4. The filter is dimensioned thermally to withstand a switching frequency of 2 kHz
with 690 V units, and 3 kHz with 500 V units.
5. The cable between the drive and the filter is shorter than the maximum length
specified by the filter manufacturer.
6. The motor cable does not exceed the maximum length specified by the filter
manufacturer and the hardware manual.
7. Maximum output frequency does not exceed the limit specified by the filter
manufacturer and 300 Hz specified by the drive.
u t
/d value at the motor terminals to
I
cont.max
). Saturation of