KEB COMBIVERT G6 Instructions For Use And Installation

5.2 Storage
The DC link of the KEB COMBIVERT is equipped with electrolytic capacitors. If elec-
trolyticcapacitorsarestoredde-energized,theoxidelmworkingasdielectricuidre-
acts with the acidic electrolyte and destroy themselves slowly. This affects the dielectric
strength and the capacity.
Ifthecapacitorstartsrunningwithratedvoltage,itistriedtobuildtheoxidelmabrupt
again. This causes heat and gas and leads to the destruction of the capacitor.
In order to avoid defectives, the KEB COMBIVERT must be started up depending on the
storageperiodinaccordancewiththefollowingspecication:
Storage period < 1 year
• Start-up without special measures
Storage period 1…2 years
• Operate drive converter one hour without modulation
Storage period 2…3 years
• Remove all cables from the power circuit; especially of braking resistor or module.
• Open control release
• Connect variable transformer to drive converter input
• Increase variable transformer slowly to indicated input voltage (>1 min) and remain
atleastonthespeciedtime.
Voltage class Input voltage Residence time
230 V
0…160 V 15 min
160…220 V 15 min
220…260 V 1 h
400 V
0…280 V 15 min
280…400 V 15 min
400…500 V 1 h
Storage period > 3 years
• Input voltages as before, however double the times per year. Eventually change
capacitors. Change the capacitors optionally.
After expiration of this start-up the KEB COMBIVERT can be operated on nominal rating
conditions or delivered to a new storage.
45
STORAGE

KEB COMBIVERT G6 Specifications

General

Brand	KEB
Model	COMBIVERT G6
Category	DC Drives
Language	English