Three-phase AC electrical supply has a number of advantages over single-phase as the phase currents cancel each other out, allowing reduced neutral wire size in the case of star wiring or to eliminate it altogether in the case of delta wiring.

Three-phase supply can deliver more constant power transfer to reduce motor vibrations for example. However the quality of the AC supply from utilities is not always predictable and the Fluke 1730 helps identify sources of electrical energy waste.

For further information visit PASS’ specialist Power Quality Analysers web page.