CT
Current transformer
A current-measurement transformer used with metering and protection equipment.
SLD / Schematic
GA objects · GA
Protection relay IED
A protection relay IED implements the selected measurement, protection and control functions.
GA / Schematic · GA
What it represents
A protection relay IED implements the selected measurement, protection and control functions.
Coordinate the case cut-out, rear terminal depth, communications and test 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 the case cut-out, rear terminal depth, communications and test access.
- Relay case size does not determine the enabled protection functions or settings.
Information to show or reference
- Confirm the exact equipment identity, drawing revision and installation orientation.
- Coordinate the case cut-out, rear terminal depth, communications and test access.
- Cross-reference the terminals, cable routes and service tasks with the equipment schedule.
A distinction that matters
Relay case size does not determine the enabled protection functions or settings.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
MiCOM official CAD drawing collection
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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