CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
IEC · HPX11U3
Three-wire ultrasonic sensor
This representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction.
IEC · Three-wire ultrasonic sensor
Autodesk IEC-60617 Symbol Preview — Ultrasonic switch forms; vendor family reference, not certified IEC geometry or database identifier.
Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.
Schematic · HPX11U3
What it represents
This representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction.
Identify supply, return and output from the selected device's terminal diagram.
Three wires do not determine whether the output is sourcing, sinking or a particular voltage.
How to read it
- Identify supply, return and output from the selected device's terminal diagram.
- Three wires do not determine whether the output is sourcing, sinking or a particular voltage.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Identify supply, return and output from the selected device's terminal diagram.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
Three wires do not determine whether the output is sourcing, sinking or a particular voltage.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Autodesk IEC-60617 preview: Ultrasonic switch forms
Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.
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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