90
Fan installation of the inverters 1PH,220V, ≤2.2kW
Fan installation of the inverters 3PH,380V,≥4kW
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
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