Answer / gunasekaran

Ps class ct having high saturation point metering ct having low. Ps class using for special protection like diffrential Ref Busbar protection it is very less setting than metering.metering always working hgh setting means suppose 200/1 Ct is their rated load is 180A so ct secondry current is 0.9 so it is experince less burden. but Ps clss always working maximum 20% of setting so it experince very high burden so it must be designed for high saturation point

i need to connect fact device(any one from following upsc,sssc,svc,statcom and tcsc)in 14 bus system....by using MATLAB psat software....if i connect these fact devices,i will get some error as "virtual error"...i cnt rectify this error.if anybody know that how to work in psat,pls help me to rectify this error.... or send mail me to, viki0607@yahoo.co.in

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