Instrument transformers are small transformers used in conjunction with high accuracy measuring instruments such as ammeters, voltmeters, power meters, and protective relaying used for protective ...

The voltage transformers and current transformers continuously measure the voltage and current of an electrical system and are responsible to give feedback signals to the relays to enable them to ...

Abstract: IN 1936, a simplification of the magnetization curve that was intended to facilitate the explanation of the pre-saturation phenomena led to the development of a d-c instrument transformer ...