Life of RC Filter capacitor

How about taking it off line and doing a load test on it or them. Then create a log of your findings and a PM program to follow.

Measure the leakage resistance or current and compared it with value when it is new. As capacitor age, leakage increases, more leakage, more i2R heating until the temperature reach the flashing temperature of the oil and explode.

Thanks for reply, but is it possible to know the condition of capacitor base on it's capacitance ?

What is the maximum % tolerance allowable in Capacitance,leakage resistance,current taken etc compared to zero-hour value as per regulations(BS/IEC/NEC etc)?.

go check regulations(BS/IEC/NEC etc)

In some countries people from outstations,especially from the regions where racial minority hails from, are forced to live in the capital city as all engineering and other offices are located in the capital. So if an engineer earns USDollars 300 as monthly wages and pays that 300 dollars as house rent will he have any money for downloading literature?. In this forum many experts have given either links to download or at least the reference numberr of the standard or quoted from regulations/codes

A rough rule of thumb is that a capacitor bank will lose about 1% of its efficacy per annum.

A 16 MVAr/132 kV bank I was running lasted 16 years but began to develop serious out of balance problems.

If the capacitors are internally fused there is no real, external, indication of deterioration as the fuses blow over the years and the interphase current should be closely monitored. If you can take the bank out of service the capacitors can be disconnected and their capacitance measured and, perhaps rearranged to rebalance the phases.

But at some stage the total capacitance will change to the extent that it effects the resonance frequency of the bank and you may run into serious harmonic issues.

Good answer and welcome to CR4....

Thank you nice to be here