Transformer Turns Ratio (transformer performance metric)This refers to the ratio of the number of turns of the primary winding to the secondary winding of a transformer, which is a key parameter determining the transformer's voltage conversion capability.
Calculation Method: The formula is TTR=Ns/Np, where Np represents the number of turns of the primary winding and Ns represents the number of turns of the secondary winding.
Functional Significance: This ratio directly determines the transformer's voltage regulation effect. If Np<Ns, it is a step-up transformer that increases the input voltage; if Np>Ns, it is a step-down transformer that reduces the input voltage. In addition, it also affects the transformer's current conversion, power transmission efficiency and impedance matching, and is crucial for ensuring the stable operation of the power system.
Practical Application: TTR testing is a routine detection item in the power industry. By measuring whether the actual turns ratio matches the design value, workers can judge whether the transformer has faults such as winding damage, so as to avoid power failures caused by equipment abnormalities.