Electric Current Symbols

The electrical currents are movements of electric charges (electrons) through a medium. The electrical current can be driving or alternating or convention. His unit is the ampere and is measured by the ammeter.

Symbology of Electric Current

Symbol Description Symbol Description
Positive polarity symbol Positive polarity   Negative polarity symbol Negative polarity
Direct current, DC symbol Direct current, DC   Direct current, DC symbol Direct current, DC
Direct current, DC symbol Direct current, DC   Alternate current, AC symbol Alternate current, AC
Low frequency AC
Mixed current symbol Mixed current
Rectified current
  Mixed current symbol Mixed current
Rectified current
Symbol of the universal equipment with DC / AC Universal equipment
Operation with direct current and alternating current
DC / AC
  Alternate current middle frequency symbol Middle frequency, alternate current
High frequency, alternate current symbol High frequency, alternate current   Converting DC to DC symbol Converting DC to DC
DC / DC
Converting DC to AC symbol Converting DC to AC
DC / AC
inverter / undulator
  Converting AC to AC symbol Converting AC to AC
AC / AC
Converting AC to DC symbol Converting AC to DC
AC / DC
Rectifier
  Alternate current of 50Hz Alternate current - AC
e.g. frequency: 50Hz
Neutral symbol Neutral      

Symbols Three-phase Connections

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Symbol of the three-phasic current at a frequency of 50Hz Three-phasic current at a frequency of 50Hz   phases symbol Phases R/S/T
Three-phase, wye connection symbol Three-phase
Wye connection
  Three-phase delta connection symbol Three-phase
Delta connection
Symbols of power converters
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