BELplus TWNZ

Transformer differential protection

  • Suitable for both two-winding and three-winding transformers with typical connection groups

  • The device does not require the use of balancing transformers

  • Differential protection designed for a transformer bay

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Find out what the BELplus TWNZ has to offer

The BELplus TWNZ unit provides protection for transformer substations, featuring a comprehensive set of protection functions for such facilities, including overcurrent and earth-fault protection, etc.
In addition to its protection functions, the device also acts as a telemechanics controller (telemetry, telesignalling and telecontrol), a fault recorder and a slow-changing waveform recorder, as well as a master controller for other devices at the substation.

Application in two- and three-winding transformers with typical connection groups

No need to use balancing transformers

A comprehensive range of protective functions (including overcurrent and earth-fault protection)

Integration of safety functions and telemechanics systems

Implementation of telemetry, remote signalling and remote control

Built-in fault recorder

Recording of slow-varying signals

Capability to act as a master controller for other station devices