VT / PT
Voltage transformer
A transformer providing a voltage signal for metering or protection.
SLD / Schematic
Symbols · CVT / CCVT
Capacitor voltage transformer
An instrument transformer using a capacitive voltage divider and an electromagnetic unit to supply documented voltage measurement or protection signals.
SLD / Schematic · CVT / CCVT
What it represents
A capacitor voltage transformer combines a capacitive divider with an electromagnetic unit to provide voltage signals for its documented metering or protection application. Manufacturer arrangements may also provide interfaces for power-line carrier equipment.
In a single line diagram, identify the high-voltage connection and the measurement or protection circuits served by the secondary outputs. The conceptual preview illustrates the operating arrangement; it is not a certified standard symbol or a manufacturer connection drawing.
How to read it
- Distinguish the capacitive divider and electromagnetic unit from a standalone coupling capacitor.
- Trace the secondary circuits and any carrier interface using the selected model documentation rather than assuming they share the same connection.
Information to show or reference
- Identify the exact CVT/CCVT equipment tag and the voltage circuit represented.
- Reference the specified primary/secondary arrangement, measurement duties and secondary earthing details.
- Cross-reference the manufacturer terminal diagram and any documented carrier or damping-system interfaces.
A distinction that matters
An inductive voltage transformer and a capacitor voltage transformer can both supply voltage signals, but their operating arrangements and transient behaviour differ. A coupling capacitor alone is not a complete CVT.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
CPB capacitor voltage transformer
Public CVT application description supports metering, protection and optional carrier context.
CCV/CVT and coupling capacitors brochure
Public manufacturer construction explanation supports the divider/electromagnetic-unit distinction.
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.
Explore related references
Put the reference into a drawing workflow.
Elora Grid helps electrical teams work with drawings, specifications and equipment information. Explore the drafting workflow or join the early-access waitlist.