They are known in form of
spikes, swells and surges. It is very common
power quality problem in a network. It can
cause lot of software and hardware problems.
They is normally very hard to detect as
occur for very short period.
Voltage flicker or fluctuation is again a
very common phenomenon witnessed in many
networks causing damage to equipment in
Studies are conducted to check the level of
these in network and subsequently to offer
solutions and remedy for the same.