What is Current transformer?
[[File:Stromwandler Zeichnung.svg|thumb|Current transformer working diagram]] [[File:CurrentTransformers.jpg|thumb|Current transformers]] A '''current transformer''' ('''CT''') is a [[transformer]] used to measure [[alternating current]]. CT is a part of '''instrument transformer'''. CT is used to measure current in a circuit when the current magnitude is too high to be measured safely. It is commonly used in power metering and [[power system protection]]. {{science-stub}} [[Category:Electricity]]