Unitronics UMI-B1 UL Series Operation Manual page 104

UMI-B1 UL Series Inverter
Time
Storing time less than 1 year
Storing time 1-2 years
Storing time 2-3 years
Storing time more than 3
years
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. The inverter with single/three-phase 220V AC as its input voltage
can apply Single phase 220V 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.
High-voltage inverter needs enough voltage (for example, 460V) 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
inverter are above 35000. Contact the local UNITRONICS offices or dial our national
service hotline (400-700-9997) for detailed operation.
6.1.3 Power cable
•
Read and follow the instructions in chapter Safety Precautions.
Ignoring the instructions may cause physical injury or death, or
damage to the equipment.
1. Stop the inverter and disconnect it from the power line. Wait for at least the time
designated on the inverter.
2. Check the tightness of the power cable connections.
3. Restore power.
Operational principle
Operation without charging
Connect with the power for 1 hour before first ON
command
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
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
102
Fault tracking