22 • vacon
TECHNICAL DATA
Tel. +358 (0)201 2121 • Fax +358 (0)201 212 205
4
If the motor is continuously (besides start and stop ramps) run at frequencies below 5 Hz, pay attention to the drive dimension-
ing for low frequencies, i.e. maximum I
H
= 0.66*I
th
or choose drive according to I
H
. It is recommended to check the rating with
your distributor or Vacon.
Drive overrating may also be necessary if the process requires high starting torque.
The voltage classes for the inverter units used in the tables above have been defined as follows:
Input 540VDC
=
Rectified 400VAC supply
Input 675VDC
=
Rectified 500VAC supply
The enclosure class of all inverter units is IP00.