Capacitor - INVT Goodrive20-EU Series Operation Manual

Goodrive20-EU Series VFD
Air direction

6.1.3 Capacitor

6.1.3.1 Capacitor reforming
If the VFD has been left unused for a long time, you need to follow the instructions to reform
the DC bus capacitor before using it. The storage time is calculated from the date the VFD is
delivered.
Storage time
Less than 1 year
1 to 2 years
2 to 3 years
More than 3 years
The method of using power surge to charge for the VFD:
The right selection of power surge depends on the supply power of the VFD. Single phase
230V AC/2A power surge applied to the VFD with single/three-phase 230V AC as its input
voltage. The VFD with single/three-phase 230V AC as its input voltage can apply Single phase
230V AC/2A power surge (L+ to R and N to S or T). All DC bus capacitors charge at the same
time because there is one rectifier.
Figure 6-2 Fan installation of the VFDs 3PH, 400V, ≥4kW
No charging operation is required.
The VFD needs to be powered on for 1 hour before the first
running command.
Use a voltage controlled power supply to charge the VFD:
Charge the VFD at 25% of the rated voltage for 30 minutes,
and then charge it at 50% of the rated voltage for 30
minutes, at 75% for another 30 minutes, and finally charge it
at 100% of the rated voltage for 30 minutes.
Use a voltage controlled power supply to charge the VFD:
Charge the VFD at 25% of the rated voltage for 2 hours, and
then charge it at 50% of the rated voltage for 2 hours, at
75% for another 2 hours, and finally charge it at 100% of the
rated voltage for 2 hours.
Rotation
direction
Operational instruction
-105-
Fault tracking
Air direction