Capacitor Life Curve - Hitachi L300P-110L Instruction Manual

5.6 Capacitor Life Curve

Ambient temperature (ºC)
50
40
30
20
10
0
-10
1 2
(Note 1)
Ambient air temperature means the surrounding temperature of the inverter. In case the inverter is
installed in a cabinet, ambient air temperature is the temperature of the internal air of the cabinet.
(Note 2)
DC bus capacitors are recommended to be replacing every 5 years. And if the inverter is used in a worse
condition, this recommended replacing period is reduced.
24h/day operation
3 4 5 6 7
Chapter 5 Maintenance, Inspection
12h/day operation
Life time (year)
8 9 10
5-5