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

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Symbols

Power quality analyser

A power quality analyser measures disturbances as well as ordinary quantities: harmonics, flicker, voltage dips and swells, unbalance and transients. It is installed at supply points and sensitive loads to show whether supply quality meets the agreed limits, and it keeps event logs for investigation.

Drawing use: SLD / Schematic
Application: Metering & protection
Reference family: IEC / Manufacturer

A distinction that matters

A power quality analyser assesses disturbances; a multifunction meter mainly reports fundamental quantities and energy.

Full reference

Symbols

Multifunction power meter

A multifunction power meter replaces separate ammeters, voltmeters, wattmeters and energy meters with one digital device. On single-line diagrams it is drawn as one block at a feeder or incomer with its CT and VT connections, and on schematics its terminals show current inputs, voltage inputs, auxiliary supply and communications.

Drawing use: SLD / Schematic
Application: Metering & protection
Reference family: Manufacturer

A distinction that matters

A multifunction meter measures many quantities; a single-function instrument shows one.

Full reference

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