Transformer Tap Position Indicator (TPI) is a precision indication device used to display and monitor the tap position of an On Load Tap Changer (OLTC) or transformer tap changer. It provides clear information about the current tap position, allowing operators to monitor transformer voltage regulation and tap changer operation from the control panel.
The Tap Position Indicator is commonly installed in transformer RTCC (Remote Tap Changer Control) panels, control panels and transformer monitoring systems. It receives the tap position signal from the OLTC mechanism or tap changer position-sensing system and indicates the corresponding tap number or position.
 
Key Features
Clear indication of transformer tap position
Suitable for OLTC and transformer tap changer applications
Designed for RTCC panel installation
Helps monitor tap changing operation
Available for different tap position ranges
Suitable for remote tap position indication
Easy-to-read tap position display
Useful for transformer control and monitoring
Suitable for replacement and retrofit applications
Can be integrated with transformer voltage control systems
 
Applications
The Transformer Tap Position Indicator TPI is suitable for power transformers, distribution transformers, transformer substations, industrial electrical systems, OLTC systems and RTCC panels. It is widely used by transformer manufacturers, electrical panel builders, transformer service companies and industrial users.
In an RTCC panel, the TPI provides the operator with information about the present OLTC tap position. This helps in monitoring whether the transformer is operating at the required tap and makes it easier to observe tap changes during automatic or manual operation.