http://www.iec.ch/TC57/CIM#RatioTapChanger
Class cim:RatioTapChanger

type
Class [owl:Class]
comment
A tap changer that changes the voltage ratio impacting the voltage magnitude but not the phase angle across the transformer.
subClassOf
cim:TapChanger
equivalentClass
cim:RatioTapChanger.tculControlMode max 1 cim:TransformerControlMode
cim:RatioTapChanger.stepVoltageIncrement max 1 cim:PerCent
References

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