Power Fluctuation means a sudden rise or fall of electrical power.

What causes power fluctuations?

Lightning strikes, birds or squirrels on power lines and falling tree limbs all cause power fluctuations that are hard to avoid and usually short-lived. While lightning and fallen tree limbs usually lead to a complete power outage, animals or debris hanging on the lines leads to brownouts or surges in electricity.

What is meant by current fluctuation?

[¦flək·chə‚wād·iŋ ′kə·rənt] (electricity) Direct current that changes in value but not at a steady rate.