Intellimeter - How is a current transformer (CT) used in metering?

Today, it is impossible to find an instrument capable of measuring high-voltage and high current effectively, That is the reason for the use of instrument transformers for the accurate measurement of current and voltage in circuits, no matter their size. Thanks to solid-state electronic developments, electric meters are capable of sensing very low currents with extreme accuracy. This allows the use of very small instruments or the ability to bundle multiple meters in a smaller enclosure, creating an opportunity for multi-customer metering systems.