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.
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
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.
Differential Protection Function (versions 5 and up on 2.10 systems)
*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
Product Configuration Options
IEC61850 documents
TISSUEs Implementation Conformance Statement (TICS) for the IEC 61850 Edition 2 server interface in Europrot+ product family
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.
Protecta provides own‑developed protection, automation & control devices for power generation, transmission, distribution, industrial and renewable energy (microgrid) applications.
Késmárk u. 7/A, 1158 Budapest, Hungary+36 1 415 3800protecta@protecta.huProtecta LinkedIn
