KT Use technique of aluminum electrolytic capacitors

8 Mar 2022


1)Expected life of equipment (required conditions)   
A︓10 years with 24h operation       
B︓10 years with 8h operation a day 
2)Ambient temperature of capacitor   
65℃ (Check ・ no heat generated part on reverse or around) 

・Capacitor selection 
case 1)
A︓For 10 years with 24h operation
L = 24(hour)× 365(day)× 10(year)
= 87600(hour)→ Working hours for 10 years    
Because the value is larger than 32000 hours, the 105℃ 2000h product does not satisfy the expected life, and the ambient temperature should be lowed.
Case 2)
B︓For 10 years with 8h operation a day       
L = 8(hour)× 365(day)× 10(year)        
= 29200(hour)→  Working hours for 10 years    
Because the value is smaller than 32000 hours, the105℃ 2000h product can be used.


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