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Products»EuroProt+»DTRV» E2-TR Two-winding transformer differential protection and control device (with phase-voltage measurement added)
Overview
84HP wide84HP back42HP

The E2-TR is a dedicated two-winding transformer protection and control IED; the relay provides complex protection, control and monitoring functions for two-winding power transformers. It is member of the DTRV product type in the EuroProt+ product family.

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 (data is stored in non-volatile memory):
    • 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 back42HP

The E2-TR is a dedicated two-winding transformer protection and control IED; the relay provides complex protection, control and monitoring functions for two-winding power transformers. It is member of the DTRV product type in the EuroProt+ product family.

The E2-TR relay provides a variety of versatile protection functions along with the main transformer differential protection, such as 3ph, Io and I2 overcurrent protection, overload protection, restricted earth-fault protection etc.

Sensitive restricted earth-fault protection (REF) is the final element in the overall differential protection system, which detects even single phase-to-ground faults close to the grounded neutral of the transformer.

The multiple instances of the implemented three-phase and residual overcurrent functions are provided for the segregated protection of both transformer windings.

Furthermore, several voltage-based protection functions are available for one transformer winding based on the three-phase voltage measurement. The connections of the voltage measurement depends on the current application.

The E2-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. 
Automatic phase shift and turns ratio compensation for all types of transformer winding connections.

It can be used as a back-up protection relay for downstream equipment (e.g. feeders, cables).

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

  • 2-winding transformer protection and control device with main transformer differential protection and several additional protection functions;
  • The versatile protections functions can provide back-up protection relay 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,
    • Residual current elimination feature is available  if there is a neutral grounding transformer in the protected zone on  the  secondary  side  of  the  transformer,
  • Sensitive restricted earth-fault protection,
  • Several voltage-based protection functions are available through the three-phase voltage measurement,
  • Current unbalance detection of Current Transformers,
  • 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 E2-TR configuration measures three phase currents, the residual current component from both sides of a two-winding, three-phase transformer and, additionally, three phase voltages. These measurements allow, in addition to the current- and voltage-based functions, directionality extension of the residual overcurrent function.

The main protection functions are the transformer differential protection and the restricted earth-fault protection functions. Based on the voltage measurement, the frequency is also evaluated to facilitate frequency-based protection functions.

The additional protection functions can provide back-up protection relay for downstream equipment (e.g. feeders, cables etc.).

Protection & control functions IEC ANSI *Inst.
Overexcitation protection function V/Hz 24 1
Definite time undervoltage protection function U<, U<< 27 2
Negative sequence overcurrent protection function I2> 46 1
Negative sequence definite time overvoltage protection function U2 > 47 1
Line thermal protection function T > 49 1
Three-phase instantaneous overcurrent protection function I >>> 50 2
Residual instantaneous overcurrent protection function Io>>> 50N/50G 2
Breaker failure protection functions CBFP 50BF 2
Three-phase time overcurrent protection function I>, I>> 51 2
Residual overcurrent protection function Io>, Io>> 51N/51G 2
Definite time overvoltage protection function U>, U>> 59 2
Residual definite time overvoltage protection function Uo>, Uo>> 59N 2
Current unbalance function 60 2
Directional residual time overcurrent protection function Io Dir>, Io Dir>> 67N/67G 2
Overfrequency protection function f>, f>> 81O 2
Underfrequency protection function f<, f<< 81U 2
Rate of change of frequency function df/dt 81R 2
Restricted earth-fault protection function REF 87N 2
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
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
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
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
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 2.00 10/02/2023 4.24 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
E2-TR configuration description 1.0 24/03/2013 4.40 MB
E2-TR_H product configuration options 5.3 11/03/2024
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E2-TR_F product configuration options 5.3 11/03/2024
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Order
Protecta products can be ordered by using an Order Code. This code specifies the hardware and the configuration.
Please always refer to a valid Order Code when placing an order.
The Order Code page can be opened by clicking the link below.
E2-TR_H: 42hp_35_rj_on_order_tr_2w.jpg E2-TR_F: 84hp_35_rj_on_order_tr_2w.jpg
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