Electrical & Electronic Symbols

Electrical Transformer Symbols

The electrical 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.

Symbols of Electrical Transformer / Autotransformer Symbols
Symbol Description Symbol Description
Transformer symbol Transformer
Two windings and an air core
Generic symbol
+ Info, Transformer types		   Transformer symbol Transformer
Two windings and an air core
+ Info
Transformer symbol Transformer
Two windings and an air core		   Transformer symbol Transformer
Two windings and an air core
Transformer core Fe-Si / Laminated core symbol Transformer core Fe-Si
Laminated core
+ Info		   Transformer with laminated core symbol Transformer with laminated core
Shielded transformer symbol Shielded transformer   Transformer with saturable reactor symbol Transformer with saturable reactor
+ Info
Ferrite core transformer symbol Ferrite core transformer
+ Info		   Variable coupling transformer symbol Variable coupling transformer
Voltage transformer symbol Voltage 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 voltage regulation / Voltage transformer symbol Voltage transformer
Transformer with voltage regulation
+ Info		   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
+ Info		   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 dual core symbol Current transformer with 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   Low-pass transformer symbol Low-pass transformer
High-pass transformer symbol High-pass transformer   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
+ Info		   Transformer with three windings symbol Transformer with three windings
Symbol of transformer dual voltage Transformer dual voltage      

Autotransformer Symbols
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Autotransformers symbol Autotransformers
+ Info		   Autotransformers symbol Autotransformers
Single phase autotransformer with adjustable voltage / Variable autotransformer symbol Variable autotransformer
Single phase autotransformer with adjustable voltage
+ Info		   Autotransformers symbol Autotransformers
Single phase autotransformer with adjustable voltage / Variable autotransformer symbol Variable autotransformer
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
+ Info		   Symbol of the grouping of three single-phase transformers Grouping of three single-phase
Transformers with star / star connection
Autotransformer with three phase star connections symbol Autotransformer with three phase star connections   Symbol of three-phase Transformer with star/delta connection Three-phase Transformer with star / delta connection
Symbol of three-phase transformer with star / delta connection with a tap changer Three-phase transformer with star / delta connection with a tap changer   Symbol of three-phase transformer with star / star connections and connection points Three-phase transformer with star / star connections and connection points
Symbol of three-phase transformer with wye / zig zag connections and neutral output Three-phase transformer with wye / zig zag connections and neutral output   Symbol of three-phase transformer with star / delta connection Three-phase transformer with star / delta connection
Electrical transformer symbols with single-line representation
Picture gallery of electrical transformers
Download symbols
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