67
Directional overcurrent
An overcurrent function with a documented direction criterion.
Protection functions
Protection functions · 32
Directional power
A function responding to power with a specified direction and operating condition.
SLD / Schematic · 32
What it represents
Directional power protection uses the direction and magnitude of power according to the implementation and configured purpose. Reverse-power applications are one use encountered in generating systems; the generic device number does not specify the complete application.
On a power drawing, keep this function reference connected to the selected equipment and its complete designation. A multifunction relay can implement several numbered functions. This entry explains the reference; it supplies no settings or commissioning procedure.
How to read it
- Identify both the current and voltage measurement references.
- Read the defined forward or reverse direction from the system and relay documentation.
Information to show or reference
- Document measurement references.
- State the applied direction convention.
- Link the protection application and associated device.
A distinction that matters
Directional power and directional overcurrent measure different operating quantities. The numbers 32 and 67 are not interchangeable.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Public reference table of ANSI device-function numbers
Public manufacturer table used to check the base function-number name.
IEEE C37.2-2022: power-system device function numbers
Normative publication reference for the device-function convention.
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.