Goodrive10 inverters Fault tracking
74
6.1.2 Capacitors
Reforming the capacitors
The DC bus capacitors must be reformed according to the operation instruction if the inverter has been
stored for a long time. The storing time is counted form the producing date other than the delivery data which
has been marked in the serial number of the inverter.
Time
Operational principle
Storing time less than 1 year
Operation without charging
Storing time 1-2 years
Connect with the power for 1 hour before first ON command
Storing time 2-3 years
Use power surge to charge for the inverter
• Add 25% rated voltage for 30 minutes
• Add 50% rated voltage for 30 minutes
• Add 75% rated voltage for 30 minutes
• Add 100% rated voltage for 30 minutes
Storing time more than 3
years
Use power surge to charge for the inverter
• Add 25% rated voltage for 2 hours
• Add 50% rated voltage for 2 hours
• Add 75% rated voltage for 2 hours
• Add 100% rated voltage for 2 hours
The method of using power surge to charge for the inverter:
The right selection of Power surge depends on the supply power of the inverter. Single phase 220V AC/2A
power surge applied to the inverter with single/three-phase 220V AC as its input voltage. All DC bus
capacitors charge at the same time because there is one rectifier.
High-voltage inverter needs enough voltage (for example, 380V) during charging. The small capacitor power
(2A is enough) can be used because the capacitor nearly does not need current when charging.
Change electrolytic capacitors
Read and follow the instructions in chapter
Safety Precautions
. Ignoring the instructions
may cause physical injury or death, or damage to the equipment.
Change electrolytic capacitors if the working hours of electrolytic capacitors in the inver ter are above 35000.
Please contact with Universal Motors.
