Tag Archives: Instrument transformer

Basic connections of current transformer to a circuit.

CT or Current Transformer used in series of the circuit to measure current which is then used to measurement and protection system. Current Transformer with a double (or triple) secondary – A CT can have one or two, and more rarely three, secondaries for the chosen application (protection and/or measurement). Current transformers secondary connection- The … Continue reading Basic connections of current transformer to a circuit. read more

Conection of Voltage / Potential transformer.

Basic connection of Voltage / Potential transformer phase/phase: primary connected between two phases phase/earth: primary connected between a phase and the earth. Metering connection arrangements for voltage/Potential transformer- star-connection of 3 transformers: requires 1 isolated MV terminal for each transformer. connecting to 2 transformers, so-called V-connection: requires 2 isolated MV terminals per transformer. Residual voltage … Continue reading Conection of Voltage / Potential transformer. read more