A $10$kVA, $2300$:$230$V$,60$Hz distribution transformer has the following

equivalent circuit parameters: R$1=5\mathrm{.}8,$ R$2=60\mathrm{.}5$m $,$ L$1$L$=85\mathrm{.}2$mH$,$ L$1$m$=48$H$,$

R$1$c$=75\mathrm{.}6$k$.$

$$ Derive the appropriate base values for this transformer

$$ Express the parameters in per unit

$$ Suppose the primary winding is connected to a source of $1$pu voltage and

the secondary winding is short circuited. Determine the primary current in

per unit and in amperes.