Cooling Circuit; Table 9: Storage - KEB COMBIVERT F5 Instruction Manual

Annex A
Storage period < 1 year
• Start-up without special measures
Storage period 1...2 years
• Operate frequency inverter 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 inverter input
• Increase variable transformer slowly to indicated input voltage (>1 min) and remain at
least on the specified time.
Storage period > 3 years
• Input voltages as before, however double the times per year. Eventually change capac-
itors.
Table 9:
After expiration of this start-up the KEB COMBIVERT can be operated on nominal rating con-
ditions or delivered to a new storage.
A.5.1

Cooling circuit

The cooling circuit must be completely empty if a unit shall be switched off for a longer period.
The cooling circuit must be blown out additionally with compressed air at temperatures below
0°C.
40
Voltage class
400 V
Storage
Input voltage
0...280 V
280...400 V
400...500 V
Residence time
15 min
15 min
1 h