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Electrical transformer symbols

The electronic transformer is a component consisting of two or more coils coupled by magnetic induction. It is used to transfer electrical energy, and to increase or decrease the tension in an AC circuit, keeping the frequency.
The autotransformer has only one winding.

Simbología / Electrical transformer symbols
Symbol Description   Symbol Description
Transformer symbol Transformer
Two windings and air core
generic symbol
  Transformer symbol Transformer
Two windings and air core
Transformer symbol Transformer
Two windings and air core
  Transformer symbol Transformer
Two windings and air core
Transformer core Fe-Si symbol Transformer core Fe-Si   Transformer with saturable reactor symbol Transformer with saturable reactor
Ferroxcube core transformer symbol Ferroxcube core transformer   Variable coupling transformer symbol Variable coupling transformer
Shielded transformer symbol Shielded transformer   Variable coupling transformer symbol Variable coupling transformer
Symbol of the single-phase transformer with continuous current regulation Single-phase transformer with continuous current regulation   Variable coupling transformer symbol Variable coupling transformer
Transformer with continuous current regulation symbol Transformer with continuous current regulation   Transformer with moving magnet symbol Transformer with moving magnet
Adjustable transformer core symbol Adjustable transformer core   Adjustable transformer core symbol Adjustable transformer core
Current transformer symbol Current transformer
Pulse transformer
  Symbol of the current transformer with two cores with a secondary winding on each core Current transformer with two cores with a secondary winding on each core
Current transformer dual core symbol Current transformer dual core   Current transformer with three primary conductors symbol Current transformer with three primary conductors
Current transformer with a secondary winding with a power symbol Current transformer with a secondary winding with a power   Symbol of the current transformer with two secondary windings on a single core and three primary Current transformer with two secondary windings on a single core and three primary
Current transformer with two secondary windings on a core symbol Current transformer with two secondary windings on a core   Transformer lowpass symbol Transformer lowpass
Transformer highpass symbol Transformer highpass   Symbol of the single-phase transformer with a shunt winding Single-phase transformer with a shunt winding
Symbol of the indicates the polarity of the windings Indicates the polarity of the windings   Transformer with three debanados symbol Transformer with three debanados

Autotransformers symbols

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Autotransformers symbol Autotransformers   Autotransformers symbol Autotransformers
Single phase autotransformer with adjustable tension symbol Single phase autotransformer with adjustable voltage   Autotransformers symbol Autotransformers
Single phase autotransformer with adjustable tension symbol Single phase autotransformer with adjustable voltage   Autotransformer with iron core symbol Autotransformer with iron core

Symbols of three-phase transformers

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Three phase transformer with regulation of induction symbol Three phase transformer with regulation of induction   Symbol of the grouping of three single-phase transformers Grouping of three single-phase transformers
with connection star / star
Autotransformer with three phase star connections symbol Autotransformer with three phase star connections   Symbol of the connect three-phase transformer with star / delta Connect three-phase transformer with star / delta
Symbol of the three-phase transformer with star / delta connection by step tap changer Three-phase transformer with star / delta connection by step tap changer   Symbol of the three-phase transformer connections with star / star and connection points Three-phase transformer connections with star / star and connection points
Symbol of the three-phase transformer with wye / zigzag and neutral output Three-phase transformer with wye / zigzag and neutral output   Symbol of the three-phase transformer with connection star / delta Three-phase transformer with connection star / delta

Symbols of transformers - Unifilar representation

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Voltage transformer symbol Voltage transformer
Two windings are shown
generic symbol
  Voltage transformer symbol, single phase Voltage transformer
Single phase
Current transformer symbol Current transformer
Pulse transformer
  Current transformer symbol Current Transformer
Single-phase transformer with separate windings symbol Single-phase transformer with separate windings   Symbol of the current transformer with two cores with a secondary winding on each core Current transformer with two cores with a secondary winding on each core
Current transformer with three conductors symbol Current transformer with three conductors   Symbol of the current transformer with two secondary windings on a core Current transformer with two secondary windings on a core
Symbol of the dual current transformer with the same core Dual current transformer with the same core   Símbolo del transformador de corriente con toma Transformer power outlet
Symbol of the single-phase transformer with a winding bypass intermediate Single-phase transformer with a winding bypass intermediate   Inductance symbol Inductance
Three-phase transformer with regulation of induction symbol Three-phase transformer with regulation of induction   Transformer with three windings symbol Transformer with three windings
Autotransformer symbol Autotransformer   Single-phase transformer coupling variable symbol Single-phase transformer coupling variable
Single phase autotransformer symbol Single phase autotransformer   Single phase autotransformer with voltage adjustable symbol Single phase autotransformer with voltage adjustable
Three phase auto transformer with star connections symbol Three phase auto transformer with star connections   Three-phase voltage transformer symbol Three-phase voltage transformer
Three-phase transformer with star / star connection symbol Three-phase transformer with star / star connection   Three-phase transformer with star / delta connection symbol Three-phase transformer with star / delta connection
Symbol of the three-phase transformer with connection star / delta Three-phase transformer with connection star / delta   Symbol of the three-phase transformer with connection star / zig zag and neutral output Three-phase transformer with connection star / zig zag and neutral output
Symbol of theThree-phase transformer with connection star / delta and step tap changer Three-phase transformer with connection star / delta and step tap changer      
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