Question { ONGC, 125204 }
what is the CT of protection and CT of metering ? what is
class 5P10 & 5P20 and class PS ?
Answer
MrTahir Vora,Reliance Jamnager has said that CT will give 5% ratio error.
(1).It is not ratio error alone but it is the composite error.
(2)The definition of ALF is no doubt correct for rated burden,however ALF increases if the total connected burden is less than the rated burden.