Datasheet

19
th
JAN 2018 - PRELIMINARY
C4AF
Environmental Condition Reference
The formula used to calculate the max power dissipated by the capacitor is the following:



󰇛



󰇜

   

 
 

󰇛


󰇜


Where:
- 

[W]= Dissipated power by Customer application
-
󰇛


󰇜

󰇟󰇠 = r.m.s current of the i
th
harmonic in Ampere from customer application
- 

󰇟󰇠 = Frequency of the i
th
harmonic in Hertz
- 

󰇛

󰇜

= Max. dissipation factor corresponding to the frequency of the i
th
harmonic
- = Number of significant harmonics
-  [ F] = Capacity in Farad







   

 
 

󰇛

󰇜






󰇧




󰇨






 󰇧




󰇨



-
󰇛


󰇜

󰇟󰇠= Permissible r.m.s current of the i
th
harmonic in Ampere linked to the graphic of the
working condition
- 


󰇟

󰇠
= Max power dissipated by the capacitor:







- 
󰇟

󰇠
= Temperature change from ambient temperature
- 

󰇟󰇠 = Maximum temperature change allowed for the capacitor
- 

󰇣


󰇤 = Thermal resistance linked to the box dimension