Current transformer
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.
Current Transformer Media
A CT for operation on a 110 kV grid
SF6 110 kV current transformer TGFM series, Russia
Many digital clamp meters utilize a current transformer for measuring alternating current (AC).
Zero-phase-sequence current transformer
Split-Core Current transformer
