•Finally it is possible to calculate the effective hours of operation
of the inverter after one year of
operation
•
•Therefore
it is assumed that degrading increases with a
factor 2 for every 10 degrees increase of temperature.
•
•This means that:
–1
hour at 100 ºC gives the same degradation as
–2
hours at 90 ºC or
–4
hours at 80 ºC or
–8
hours at 70 ºC or
–Et
cetera
–
•Since the lifetime of electrolytic capacitors is usually specified at
105 ºCelsius
this temperature is used as reference.