Electrical Engineering ⇒ Topic : Types of 3-phase loads.

Types of 3-phase loads. There are two types of 3-phase loads viz (i) star-connected load (ii) delta-connected load as shown in Fig.(a). The 3-phase load (star or delta connected) is said to be balanced if load in each phase is the same (i.e. load in each phase has the same impedance and power factor). If a 3-phase load (star or delta connected) does not meet any one of the above requirements, it is said to be unbalanced

                                        Y-connected load                figure (a)                       Δ-connected load

A 3-phase star-connected alternator may be connected to a star-connected or delta connected load. Similarly, a 3-phase delta-connected alternator may be connected to a star connected or delta-connected load