Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

CVT / CCVT

Symbols

Capacitor voltage transformer

A capacitor voltage transformer combines a capacitive divider with an electromagnetic unit to provide voltage signals for its documented metering or protection application. Manufacturer arrangements may also provide interfaces for power-line carrier equipment.

Drawing use

SLD / Schematic

Application

Metering & protection

Reference family

Manufacturer

A distinction that matters

An inductive voltage transformer and a capacitor voltage transformer can both supply voltage signals, but their operating arrangements and transient behaviour differ. A coupling capacitor alone is not a complete CVT.

Full referenceAdd to legend

VT / PT

Symbols

Voltage transformer

A voltage transformer provides a secondary voltage related to the voltage on its primary winding. VT and PT, for potential transformer, are common terms encountered in power drawings. Its representation identifies a measurement function; winding connections, fuses, earthing and secondary circuits need their own documented detail.

Drawing use

SLD / Schematic

Application

Metering & protection

Reference family

IEC / IEEE / ANSI

A distinction that matters

A VT supplies a voltage measurement; a power transformer supplies a power circuit. A shared transformer-like outline does not make their functions interchangeable.

Full referenceAdd to legend

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.