This Malaysian Standard describes the electromagnetic disturbance phenomena of voltage dips and short interruptions in terms of their sources, effects, remedial measures, methods of measurement, and measurement results (in so far as these are available). They are discussed primarily as phenomena observed on the networks of public electricity supply systems and having an effect on electrical equipment receiving its energy supply from those systems. *Voltage sag*; is an alternative name for the phenomenon voltage dip.
This standard additionally contains statistical measurement data obtained from foreign and Malaysia public power supply systems. It is intended that this standard provides guidance and data to power utilities, industry and professionals engaged in this sector.