CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
Symbols · V
Voltmeter
A voltmeter indicates electrical potential difference between its measurement inputs.
SLD / Schematic · V
What it represents
A voltmeter indicates electrical potential difference between its measurement inputs. The drawing identifies the measured conductors and any instrument transformer or selector associated with those inputs.
How to read it
- Trace both voltage inputs rather than only the phase connection.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.
Information to show or reference
- Name measured voltage
- State direct or VT connection
- Reference measuring range
A distinction that matters
A voltmeter indicates voltage; a voltage relay issues an output according to a voltage condition.
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
Public documentation of this equipment function or named vendor variant; the illustration is independently authored and is not the source graphic.
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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