In a delta connection, if the magnitude of phase voltage is Vp and the magnitude of phase current is Ip, then the expression for the complex power is:
Assume load to be capacitive
1
\({S^*} = \sqrt 3 {V_P}{I_P}\angle \phi \;VA\)
2
\({S^*} = \sqrt 3 {V_P}{I_P}\angle - \phi \;VA\)
3
\({S^*} = {V_P}{I_P}\;\angle \phi \;VA\)
4
\({S^*} = 3{V_P}{I_{P\;}}\angle - \phi \;VA\)