Side-by-side reference

Understand the difference.

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

First referenceCompare with

DCB

Symbols

Detuned capacitor bank

A detuned capacitor bank places a reactor in series with each capacitor step so that the step resonates at a frequency below the lowest significant harmonic, commonly expressed as a detuning factor such as 7 per cent, which tunes near 189 Hz on a 50 Hz network. This prevents the bank from forming a parallel resonance that would amplify 5th harmonic currents from converters.

Drawing use: SLD
Application: Microgrid systems
Reference family: IEC / IEEE / ANSI

A distinction that matters

A detuned bank avoids resonance and absorbs little harmonic current; a tuned filter is designed to sink harmonic current.

Full reference

CAP 3PH

Symbols

Three-phase power-factor capacitor

A three-phase capacitor assembly provides a documented reactive-power function connected to the power circuit. The schematic needs its connection, switching and protective devices as separate elements.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer

A distinction that matters

A power-factor capacitor is a power-circuit assembly, not a generic small-signal filter capacitor.

Full reference

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