CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
IEC · Q020903
Ionising-radiation qualifier
An ionising-radiation qualifier identifies the radiation role attached to a measuring or operating function.
IEC · Ionising-radiation qualifier
Autodesk IEC-60617 Symbol Preview — Radiation qualifiers; 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 · Q020903
What it represents
An ionising-radiation qualifier identifies the radiation role attached to a measuring or operating function.
Reference the specified detector or source and its separate safety documentation.
The graphical role is not a radiation hazard sign or a device approval.
How to read it
- Reference the specified detector or source and its separate safety documentation.
- The graphical role is not a radiation hazard sign or a device approval.
Information to show or reference
- Identify the associated device, circuit or diagram boundary.
- Reference the specified detector or source and its separate safety documentation.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.
A distinction that matters
The graphical role is not a radiation hazard sign or a device approval.
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: Radiation qualifiers
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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