CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
IEC · HIN1B13
Optical tachometric transducer
This representation identifies optical speed-sensing in the publisher's tachometric family.
IEC · Optical tachometric transducer
Autodesk IEC-60617 Symbol Preview — Instrumentation and sensor family reference; 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 · HIN1B13
What it represents
This representation identifies optical speed-sensing in the publisher's tachometric family.
Show the optical sensing relationship and output interface separately.
An optical speed sensor is distinct from a generic photoelectric presence switch.
How to read it
- Show the optical sensing relationship and output interface separately.
- An optical speed sensor is distinct from a generic photoelectric presence switch.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Show the optical sensing relationship and output interface separately.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
An optical speed sensor is distinct from a generic photoelectric presence switch.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
AutoCAD Electrical: Instrumentation and sensors
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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