46
Current unbalance / negative sequence
A current phase-balance or reverse-phase function used in documented protection applications.
Protection functions
Protection functions · 46G
Generator current-unbalance protection
Supervises generator current imbalance using the manufacturer's machine protection implementation.
SLD / Schematic · 46G
What it represents
Supervises generator current imbalance using the manufacturer's machine protection implementation.
The drafting record should connect this function to the generator's three phase-current measurements, then trace the generator unbalance alarm or trip function. 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 (Eaton EGR family). 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 generator's three phase-current measurements.
- Trace the generator unbalance alarm or trip function.
Information to show or reference
- Label the generator's three phase-current measurements.
- Cross-reference the generator unbalance alarm or trip function.
- Retain the complete suffix, selected device tag and manufacturer manual revision.
A distinction that matters
46G names a generator application in the cited Eaton family; it does not universally mean ground overcurrent.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
EGR-5000 generator protection: public function overview
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.