TapChanger
A tap changer is a device fitted to power transformers that adjusts the transformer's turns ratio in order to control the secondary voltage as input voltage or load current changes. By selecting different winding taps, it compensates for voltage variations along the distribution or transmission system, helping to maintain a stable output.
There are two main categories: on-load tap changers (OLTC) and off-load or no-load tap changers (NLTC). OLTCs
Operation generally involves monitoring the output voltage and, when it drifts outside a preset band, the control
Applications include power distribution transformers, feeder substations, and other systems where voltage regulation is required under