Electrical Transformers: Current Transformers and DC Shunts

Split core and miniature split core current transformers
A voltage or current transformer is a type of electrical transformer that is designed to provide a secondary current that is accurately proportional to the primary current flowing. They reduce high primary currents down to a consistent 5- or 1-Amp secondary current. A DC shunt is a device that provides a low-resistance path for direct current (DC) and primarily used in rail and marine applications.