Global site

ABB's website uses cookies. By staying here you are agreeing to our use of cookies. Learn more

Transformer terminal RET 541

The RET 541 transformer terminal is designed for the protection, control, measurement and supervision of two-winding power transformers and power generator-transformer blocks in distribution networks

The RET 541 terminals are loaded with functionality to suit your application. Besides the three-phase stabilized current differential function featuring 2nd and 5th harmonic restraint, the basic version terminals incorporate three-phase over-current, non-directional earth-fault, restricted earth-fault, transformer thermal overload and phase unbalance protection.

These multi-version terminals further include over-voltage and under-voltage supervision, directional earth-fault, residual voltage and over-excitation protection, over-frequency and under-frequency protection, and under-impedance protection. Enhanced with an optional automatic voltage regulator function the terminal forms an integrated transformer management unit.

A special control version terminal, which includes just voltage regulator and control functions, is also available. 

Scope

  • Transformer protection relay

Product benefits

  • Withstands harsh environments e.g. in heavy industry, marine and offshore applications
  • Programmable logic functions (PLC)
  • Wide support for different communication protocols
  • Optical communication for fast disturbance-free communication

Product features

  • Three-phase current differential protection with stabilized and instantaneous stages for fast and selective winding short-circuit and interturn fault protection
  • Optional automatic on-load tap-changer control function for single or parallel transformers
  • Support for IEC 61850 and Profibus DP protocols through adapters
  • 15 binary inputs and 12 output relays

Are you looking for support or purchase information?

Loading documents

Related offering