Editing Transformer (section)

==Classification parameters==
[[File:Melbourne Terminal Station.JPG|thumb|right|An [[electrical substation]] in [[Melbourne]], [[Australia]]
showing three of five 220&nbsp;kV – 66&nbsp;kV transformers, each with a capacity of 150&nbsp;MVA]]
[[File:Camoflaged Transformer Langley City.jpg|thumb|alt=Camouflaged transformer in Langley City|[[Camouflage]]d transformer in [[Langley City]], [[Canada]]]]
Transformers can be classified in many ways, such as the following:
* ''[[Power rating]]'': From a fraction of a volt-ampere (VA) to over a thousand MVA.
* ''Duty of a transformer'': Continuous, short-time, intermittent, periodic, varying.
* ''Frequency range'': [[Utility frequency|Power-frequency]], [[audio frequency|audio-frequency]], or [[radio frequency|radio-frequency]].
* ''Voltage class'': From a few volts to hundreds of kilovolts.
* ''Cooling type'': Dry or liquid-immersed;  self-cooled, forced air-cooled;forced oil-cooled, water-cooled.
* ''Application'':  power supply, impedance matching, output voltage and current stabilizer, [[Pulse transformer|pulse]], circuit isolation,  [[Electricity distribution|power distribution]], [[rectifier]], [[arc furnace]], amplifier output, etc..
* ''Basic magnetic form'': Core form, shell form, concentric, sandwich.
* ''Constant-potential transformer descriptor'':  Step-up,  step-down, [[Isolation transformer|isolation]].
* ''General winding configuration'': By [[Vector group|IEC vector group]], two-winding combinations of the phase designations  delta, wye or star, and [[zigzag transformer|zigzag]]; [[autotransformer]], [[Scott-T transformer|Scott-T]]
* ''Rectifier phase-shift winding configuration'': 2-winding, 6-pulse; 3-winding, 12-pulse; . . ., {{nowrap|''n''-winding}}, [''n''&nbsp;−&nbsp;1]·6-pulse; polygon; etc..
{{Clear}}