"A transformer ratio is 110/11, then it is"
"A transformer ratio of 110 / 10.5, it is"
"A transformer ratio of 121 / 10.5, it is"
High pressure to low pressure is the buck, and vice versa is boosted. That is, the input transformer is a high voltage, the output is a low voltage is a low voltage.
For example, 10KV system, the transformer primary winding rated voltage of 10KV and 10,5KV, secondary winding rated voltage of 10.5 and 11KV.
110KV system, the transformer primary winding rated voltage of 110KV, secondary winding rated voltage of 121KV.
220KV system, the transformer primary winding rated voltage of 220KV, secondary winding rated voltage of 242KV. and many more.
110KV is a winding, that is, 110 variable 10.5KV course is the buck variable. Secondary winding for the 121KV, that is, 10.5 variable 121KV course, the pressure has changed.
110 / 11KV is a step-down transformer.
110 / 10.5KV is a step-down transformer.
121 / 10.5KV is a step-up transformer.
Consider the line pressure drop, the state provides a transformer primary winding rated voltage and secondary winding rated voltage.
