Protection Engineering Basics and Schemes Protection Engineering | Page 209

Secondary Currents:

At V av = 31KV;

CT Ratio at primary is 400 / 1,

I av = 372.4524A

I sec = Ct Primary current actual CT Ratio

At V max = 34.65KV

I avsecondary =

372. 4524

400 1

I acsecondary = 0.931131A

I maxsec =

333. 257

400 1

At V min = 28.05KV

I maxsec = 0.8331425A pg. 209