When its load has a leading power factor.
zero volatge regulation means the terminal volatge of transformer at full load on a given power factor become equal to the rated teriminal volatge of transformer , it happens only for leading power factor in transformer
A transformer will operate with a voltage regulation of zero when it is not supplying a load.
The change in output voltage from no load to full load defines the voltage regulation of that transformer.
The lower the impedance, the lower the voltage drop across the transformer as it is loaded. This means regulation is better, since voltage variance is smaller.
A transformer will operate with a voltage regulation of zero when it is not supplying a load.
yes.. voltage regulation can be negative
The power factor of a load affects the voltage regulation of a transformer because it influences the reactive power flow and the impedance of the transformer. A low power factor, indicating a higher proportion of reactive power, can lead to increased voltage drops across the transformer’s impedance, resulting in poorer voltage regulation. Conversely, a high power factor reduces reactive power losses and improves voltage stability. Thus, maintaining a good power factor is essential for optimal transformer performance and voltage regulation.
Ideally the voltage regulation voltage of a transformer should be zero. It means when you change the load from no load to short circuit (theoretically, normally you don't want to burn the transformer windings) the output voltage doesn't change and remains equal to the no load voltage.
what are zenar folloyars?explin with circute diagram.
Oh, dude, a low impedance transformer on regulation? It's like having a really chill friend who always has your back. Basically, a low impedance transformer helps maintain a stable output voltage even when there are fluctuations in the input voltage. So, it's like the transformer saying, "I got you, bro," and keeping things running smoothly.
The maximum efficiency condition in distribution transformer is said to be occurred when iron loss = copper loss
These two tests are performed on a transformer to determine (i) equivalent circuit of transformer(ii)voltage regulation of transformer(iii) efficiency of transformer. The power required for theseOpen Circuit test and Short Circuit test on transformeris equal to the power loss occurring in the transformer.