64
Ground detector protection
Identifies an earth or ground fault using the circuit arrangement specified for the device.
Protection functions
Protection functions · 64G
Stator ground-fault protection
Supervises generator stator earth faults using the selected stator-ground protection method.
SLD / Schematic · 64G
What it represents
Supervises generator stator earth faults using the selected stator-ground protection method.
The drafting record should connect this function to the generator neutral arrangement and the voltage/current or injection inputs, then trace the stator-ground alarm and generator trip matrix. 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 (SEL generator protection feature table). 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 neutral arrangement and the voltage/current or injection inputs.
- Trace the stator-ground alarm and generator trip matrix.
Information to show or reference
- Label the generator neutral arrangement and the voltage/current or injection inputs.
- Cross-reference the stator-ground alarm and generator trip matrix.
- Retain the complete suffix, selected device tag and manufacturer manual revision.
A distinction that matters
The number 64G alone does not establish 100-percent winding coverage; that depends on the actual method and equipment configuration.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Generator protection feature and function comparison
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.