PE
Protective earth
An identified connection serving the protective earthing function.
SLD / Schematic
Protection functions · 64
Ground detector protection
Identifies an earth or ground fault using the circuit arrangement specified for the device.
SLD / Schematic · 64
What it represents
Identifies an earth or ground fault using the circuit arrangement specified for the device.
In a drafting package, connect this reference to the earthing system and current/voltage detection circuit. The associated drawing should trace the ground-fault alarm or tripping destination; the number identifies the role and does not specify the terminal arrangement, ratings or operating settings.
How to read it
- Identify the earthing system and current/voltage detection circuit.
- Trace the ground-fault alarm or tripping destination.
Information to show or reference
- Label the earthing system and current/voltage detection circuit.
- Cross-reference the ground-fault alarm or tripping destination.
- Identify the device tag, manual revision and logic drawing that define this implementation.
A distinction that matters
The base number 64 does not state whether detection uses current, voltage or insulation measurement.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
SecoGear medium-voltage switchgear application and technical guide, DET-882
Public manufacturer number/name association. Drafting explanations are independently written.
IEEE C37.2-2022: power-system device function numbers
Normative device-number publication; exact edition wording and compliance require the 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.
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