kWh
Active-energy meter
An active-energy meter accumulates active power over time.
SLD / Schematic
Symbols · *
Integrating instrument general symbol
General rectangle-with-band form for instruments that totalise a quantity over time, such as energy meters.
In plain English
What does Integrating instrument general mean?
Integrating instruments add up a quantity over time, and IEC-style diagrams draw them as a rectangle with a narrow band across the top. The unit inside, such as kWh, kvarh or Ah, tells the reader what is being totalised, and extra marks in the band can show multi-rate or demand features.
A simple example
The general symbol does not tell you whether the meter is a billing meter or a check meter, its accuracy class, or the direction of energy that each register records. Those are often contractual requirements and must be stated in the metering schedule.
What the drawings help you do
Read the unit to find the integrated quantity. Look for marks in the band that add tariff or demand features. The integrating form totalises; the indicating circle shows an instantaneous value.
This particular reference
General rectangle-with-band form for instruments that totalise a quantity over time, such as energy meters. The integrating form totalises; the indicating circle shows an instantaneous value.
- Rating
- A value stating the conditions for which equipment is specified.
- Schematic
- A drawing showing function and connections rather than physical appearance.
Read the source: IEC graphical symbols for diagrams · Power and energy measurement quantities
SLD / Schematic · *
What it represents
Integrating instruments add up a quantity over time, and IEC-style diagrams draw them as a rectangle with a narrow band across the top. The unit inside, such as kWh, kvarh or Ah, tells the reader what is being totalised, and extra marks in the band can show multi-rate or demand features.
The general symbol does not tell you whether the meter is a billing meter or a check meter, its accuracy class, or the direction of energy that each register records. Those are often contractual requirements and must be stated in the metering schedule.
How to read it
- Read the unit to find the integrated quantity.
- Look for marks in the band that add tariff or demand features.
Information to show or reference
- State integrated quantity
- Give accuracy class
- Define register direction
A distinction that matters
The integrating form totalises; the indicating circle shows an instantaneous value.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
IEC graphical symbols for diagrams
IEC context for graphical symbols used in diagrams; no IEC graphic is reproduced.
Power and energy measurement quantities
Public explanation of power and energy measurement quantities.
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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kvarh
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Indicating instrument general symbol
General circle form for any indicating instrument, with a placeholder replaced by the unit or quantity measured.
SLD / Schematic
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