CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
GA objects · GA
Window current transformer
A window CT surrounds a conductor or busbar to provide the specified current measurement.
GA / Schematic · GA
What it represents
A window CT surrounds a conductor or busbar to provide the specified current measurement.
Coordinate aperture, primary conductor position and secondary terminal access. The GA locates the physical item; the associated schematic or equipment schedule records its electrical interfaces.
The preview is independent educational geometry and is not a manufacturer outline, fabrication drawing or verified standard graphic. Obtain the applicable model drawing from the cited official source before making a dimensional layout.
How to read it
- Coordinate aperture, primary conductor position and secondary terminal access.
- Aperture fit does not establish ratio, class or protection suitability.
Information to show or reference
- Confirm the exact equipment identity, drawing revision and installation orientation.
- Coordinate aperture, primary conductor position and secondary terminal access.
- Cross-reference the terminals, cable routes and service tasks with the equipment schedule.
A distinction that matters
Aperture fit does not establish ratio, class or protection suitability.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Indoor current and voltage transformers
Public manufacturer or design reference relevant to this equipment class.
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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