32
Directional power
A function responding to power with a specified direction and operating condition.
Protection functions
Protection functions · 32N
Wattmetric earth-fault protection
Uses residual voltage and current to assess earth-fault power in the documented neutral-system application.
SLD / Schematic · 32N
What it represents
Uses residual voltage and current to assess earth-fault power in the documented neutral-system application.
The drafting record should connect this function to the residual voltage and current sources and polarity convention, then trace the wattmetric element and feeder earth-fault trip. Keep the complete designation and equipment tag together so that the SLD, relay logic and terminal schedule describe the same implementation.
The cited mapping is a public manufacturer example (ABB Relion 620 function mapping). Suffixes are not universal equivalences across products, and this reference supplies neither a protection setting nor certification of the selected scheme.
How to read it
- Identify the residual voltage and current sources and polarity convention.
- Trace the wattmetric element and feeder earth-fault trip.
Information to show or reference
- Label the residual voltage and current sources and polarity convention.
- Cross-reference the wattmetric element and feeder earth-fault trip.
- Retain the complete suffix, selected device tag and manufacturer manual revision.
A distinction that matters
ABB's 32N mapping identifies wattmetric earth-fault protection; it differs from generator reverse active-power protection.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Relion 620 series: published protection function and designation mappings
Public primary-source function or application mapping used to identify this designation; wording and drafting notes are original.
IEEE C37.2-2022: power-system device function numbers
Device-number and suffix convention. This page is not a reproduction of the full licensed standard.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.