What Is a Tap Position Indicator?

## What is a tap position indicator? A tap position indicator displays the current position of a transformer on-load tap changer. The operator uses this information to monitor the transformer voltage-control condition and verify that switching commands have been executed correctly. ## How is the tap position measured? Tap position data can be received as coded digital inputs, resistance values or electrical signals, depending on the tap changer and transmitter. The indicator converts this data into a clear numerical display and may also transfer the value to supervisory or automation systems. ## Applications in substations and control panels Tap position indicators are used in transformer control panels, transmission and sub-transmission substations, power plants and industrial monitoring systems. Input compatibility, reading accuracy, panel dimensions, supply voltage and communication output are important selection factors. ## Rizmooj tap position indicators Rizmooj Electric Toos supplies tap position display and monitoring equipment for transformer applications. Explore the [Rizmooj tap position indicator range](/products/tap-position-indicator) to compare available models and technical applications.