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Products»EuroProt+»DTRV»Transformer protection & control» E4-TR Three-winding transformer differential protection
Overview
84HP wide84HP wide back42HP

The E4-TR is a dedicated three-winding transformer protection and control IED; the relay provides complex protection, control and monitoring functions for three-winding power transformers. This device is a member of the DTRV product type in the EuroProt+ product family. The EuroProt+ family complex protection - in respect of hardware and software - is a modular device. Because of the modular architecture, the modules are assembled and configured according to the user’s requirements; from that point on, the software determines the functions.

The DTRV type is designed particularly for protection and control applications of power transformers and generators including generator-transformer blocks. Additionally, the DTRV product type includes a variety of versatile protection functions to meet the users´ most exacting requirements.

Because of the implemented control, measuring and monitoring function, the IED can also be used as a bay control unit.

The EuroCAP configuration tool, which is available free of charge, offers a user-friendly and flexible application for protection, control and measurement functions to ensure that the IED-EP+ devices are fully customisable.

General features

  • Native IEC 61850 IED with Edition 2 compatibility
  • Scalable hardware to adapt to different applications
  • 84 HP or 42HP wide rack size (height: 3U)
  • The pre-defined factory configuration can be customized to the user’s specification with the powerful EuroCAP tool
  • Flexible protection and control functionality to meet special customer requirements
  • Advanced HMI functionality via color touchscreen and embedded WEB server, extended measuring, control and monitoring functions
  • User configurable LCD user screens, which can display SLDs (Single Line Diagrams) with switchgear position indication and control as well as measuring values and several types of controllable objects.
  • Various protection setting groups available
  • Enhanced breaker monitoring and control
  • High capacity disturbance recorder (DRE) and event logging:
    • DRE for up to 32 analogue and 64 digital signal channels.
    • Event recorder can store more than 10,000 events.
  • Several mounting methods: Rack; Flush mounting; Semi-flush mounting; Wall mounting; Wall-mounting with terminals; Flush mounting with IP54 rated cover.
  • Wide range of communication protocols:
    • Ethernet-based communication: IEC61850; IEC60870-5-104; DNP3.0 TCP; Modbus TCP
    • Serial communication: DNP3.0; IEC60870-5-101/103; MODBUS, SPA
  • The EuroProt+ family can handle several communication protocols simultaneously.
  • Built-in self-monitoring to detect internal hardware or software errors
  • Different time sources available: NTP server; Minute pulse; Legacy protocol master; IRIG-B000 or IRIG-B12X
Application
84HP wide84HP wide back42HP

The E4-TR is designed to be the main protection and control IED for three -winding power transformers, including auto-transformers. The relay is a member of the DTRV product type in the EuroProt+ product family.

The E4-TR relay provides a variety of versatile protection functions along with the main transformer differential protection, such as 3ph, Io and I2 overcurrent protection, thermal overload protection, restricted earth fault protection (low- or high-impedance option) etc. It can be used as a back-up protection relay for downstream equipment (e.g. feeders, cables).

The E4-TR transformer protection relay can support double-breaker terminals on any side of the transformer such as breaker and a half or ring bus topology.

The IED includes a wide range of control and supervisory functions, which provide full control and user-defined interlocking schemes for the primary switchgear at the substation.

scope of application

  • 3-winding transformer protection and control device with main transformer differential protection and several additional protection functions
  • The implemented protection functions provide back-up protection for downstream equipment (e.g. feeders, cables etc.).
  • Protection for all kinds of power transformers (including auto-transformers)
  • 1-/3-phase tripping and support for double breaker terminals such as breaker and a half  or ring bus topologies
  • Three-phase transformer differential protection:
    • Automatic phase shift and turns ratio compensation of the transformer.
    • 2nd and 5th harmonics restraint for transformer inrush and overexcitation detection
  • Restricted earth-fault protection
  • Current unbalance detection of CT
  • Programmable interlocking schemes
  • Optional external units:
    • 28 input/ 5 output tap changer transcoder (TRCS)
    • Remote I/O unit (RIO)
  • Optional transducer I/Os (RTD/mA)
  • Optional impedance protection

 

Protection & Control functions

The E4-TR configuration measures three phase currents and the zero sequence current of both sides of a three-winding, three-phase transformer. The main protection functions are transformer differential protection and restricted earth-fault protection functions. The additional protection functions can provide back-up protection for downstream equipment (e.g. feeders, cables).

Protection & control functions IEC ANSI *Inst.
Negative sequence overcurrent protection function I2> 46 1
Line thermal protection function T > 49 1
Three-phase instantaneous overcurrent protection function I >>> 50 3
Residual instantaneous overcurrent protection function Io>>> 50N/50G 3
Breaker failure protection functions CBFP 50BF 3
Three-phase time overcurrent protection function I>, I>> 51 3
Residual overcurrent protection function Io>, Io>> 51N/51G 3
Current unbalance function 60 3
Restricted earth-fault protection function REF 87N 3
Differential protection function 3IdT > 87T 1
*The INST. column contains the numbers of the pre-configured function blocks in the factory configuration.These numbers may be different in order to meet the user’s requirements.
Documentation
IEC61850 documents version Format Date Size
TISSUEs Implementation Conformance Statement (TICS) for the IEC 61850 Edition 2 server interface in Europrot+ product family 1.0 18/04/2023 569.01 KB
Protocol Implementation eXtra Information for Testing (PIXIT) for the IEC 61850 Edition 2 server interface in Europrot+ product family 1.03 18/04/2023 555.52 KB
Protocol Implementation Conformance Statement (PICS) for the IEC 61850 Edition 2 server interface in Europrot+ product family 1.02 18/04/2023 478.52 KB
Model Implementation Conformance Statement (MICS) for the IEC 61850 Edition 2 server interface in DTRV product 1.0 18/04/2023 390.77 KB
Model Implementation Conformance Statement (MICS) for the IEC 61850 Edition 1 server interface in the Eurorot+ product family 1.0 21/05/2012 864.71 KB
Protocol Implementation Conformance Statement (PICS) for the IEC 61850 Edition 1 server interface in Eurorot+ product family 1.1 20/03/2017 261.09 KB
Protocol Implementation eXtra Information for Testing (PIXIT) for the IEC 61850 Edition 1 server interface in Europrot+ product family 1.1 20/03/2017 259.27 KB
Type description version Format Date Size
Transformer protection & control 1.0 05/04/2019 2.08 MB
Hardware Guides version Format Date Size
Hardware description 2.12 06/11/2024
5.26 MB
Maintenance guide 2.1 28/06/2023 770.85 KB
Application Guides version Format Date Size
Operating Manual and Troubleshooting Guide - system version: 2.8 1.5 19/09/2023 2.69 MB
Configuration Descriptions version Format Date Size
E4-TR configuration description 1.0 23/05/2014 4.26 MB
E4-TR_H product configuration options 5.3 10/09/2024 -
E4-TR_F product configuration options 5.2 09/12/2024
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Order
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Please always refer to a valid Order Code when placing an order.
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