IMO HD2 IP Series, Instruction Manual

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HD2 IP55 High-ingress Protection Series
Routine maintenance
-259-
Figure 8-1 Fan maintenance for inverters of 7R5G/011P or higher
Air direction Rotating direction
Air direction
8.4 Capacitor
8.4.1 Capacitor reforming
If the inverter 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 inverter
is delivered.
Storage time Operation principle
Less than 1 year No charging operation is required.
1 to 2 years
The inverter needs to be powered on for 1 hour before the first
running
command.
2 to 3 years
Use a voltage controlled power supply to charge the inverter:
Charge the inverter 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.
More than 3 years
Use a voltage controlled power supply to charge the inverter:
Charge the inverter 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.
The method for using a voltage controlled power supply to charge the inverter is described as
follows:
The selection of a voltage controlled power supply depends on the power supply of the inverter.
For inverters with an incoming voltage of 1PH/3PH 230 V AC, you can use a 230 V AC/2 A
voltage regulator. Both 1PH and 3PH inverters can be charged with a 1PH voltage controlled
power supply (connect L+ to R, and N to S or T). All the DC bus capacitors share one rectifier,
and therefore they are all charged.
For inverters of a high voltage class, ensure that the voltage requirement (for example, 380 V)