10
0
20
30
40
50
60
100 2 4 6 8
Ambient temperature [°C]
Capacitor life [Year]
Single-phase 200 V, 0.2 kW to 3.7 kW
Electrification for 24 hours a day,
at load rate of 80% (HND)
(excluding 3.7 kW)
Electrification for 24 hours a day,
at load rate of 80% (HHD)
Electrification for 24 hours a day,
at load rate of 100% (HHD)
Electrification for 24 hours a day,
at load rate of 100% (HND)
(excluding 3.7 kW)
Note 1. “Ambient temperature” refers to the temperature measured at a distance of approximately 1 cm from the
bottom center of the inverter (atmospheric temperature).
It refers to an interior temperature if the inverter is stored in a cabinet.
Note 2. The smoothing capacitor has a limited life because it is subjected to chemical reaction inside the part
and, as a guide, the inverter needs to be replaced once a decade approximately. (This period is an ex-
pected design life, and not the guaranteed value.)
However, if the inverter is used at a high ambient temperature or in a heavy loaded environment, such
as at the over-rated current, its life will be significantly shortened.
Appendix
A-8
M1 Series Standard Type User's Manual (I669)
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