Functional block diagram of the DTRV/TR relay
General presentation
The DTRV/TR is an intelligent electronic device (IED) dedicated to automatic voltage regulation (tap changer controller); this relay performs the control and monitoring functions of the tap changer for two- or three-winding power transformers. This device belongs to the DTRV product family within the PROTECTA range. In both hardware and software terms, this range is based on a modular architecture. Thanks to this architecture, the modules are assembled and configured according to the user’s needs; from then on, the software determines the functions.
The DTRV relays are specially designed for the protection and control of power transformers. In addition, the DTRV range integrates a wealth of versatile protection functions to meet the most demanding user requirements. Thanks to the control, measurement and monitoring functions implemented, the IED can also be used as a bay control unit.
The EuroCAP configuration software, available free of charge, provides a user-friendly and flexible application for protection, control and measurement functions, allowing the use of fully customisable devices.
General features
- Native intelligent electronic device (IED) compliant with the IEC 61850 standard, Edition 2 compatible
- Scalable hardware adapting to different applications
- Rack width of 84TE or 42TE (height: 3U)
- The predefined factory configuration can be customised to the user’s specifications with the powerful EuroCAP tool
- Flexible protection and control functionalities to meet specific user requirements
- Advanced HMI functionalities via a colour touch screen and a built-in web server, extended measurement, control and monitoring functions
- User-configurable LCD displays, able to show single line diagrams (SLD) with switchgear position indication and control, as well as measurement values and several types of controllable objects.
- Various protection setting groups available
- Enhanced circuit breaker monitoring and control
- High-capacity disturbance recorder (DRE) and event logging (data stored in non-volatile memory):
- DRE supporting up to 32 analogue signal channels and 64 digital signal channels.
- The event recorder can store more than 10,000 events.
- Several mounting methods: rack-mounted; flush-mounted; semi-flush-mounted; wall-mounted; wall-mounted with terminals; flush-mounted with IP54-rated cover.
- Wide range of communication protocols
- Ethernet communication: IEC 61850; IEC 60870-5-104; DNP3.0 TCP; Modbus TCP
- Serial communication: DNP3.0; IEC 60870-5-101/103; MODBUS, SPA
- The PROTECTA range can handle several communication protocols simultaneously.
- Built-in self-monitoring function to detect internal hardware or software errors.
- Various time sources available: NTP server; minute pulse; legacy protocol master; IRIG-B000 or IRIG-B12X
Applications
The DTRV/TR relay is designed to control the tap changer of power transformers. This relay belongs to the DTRV family within the PROTECTA range. It integrates a powerful automatic tap changer control function (manual control included), as well as overvoltage protection functions.
Field of application
- Automatic or manual voltage regulation (tap changer control) for transformers
- Additional voltage protection functions.
- Tap changer supervision; tap changer position defined on 6 bits (binary, BCD, Gray, mA)
- Optional external units:
- 28-input / 5-output tap changer transcoder (TRCS)
- Remote I/O unit (RIO)
Protection and control functions
The DTRV/TR device measures the three phase currents, the residual current component and, in addition, the three phase voltages and the residual voltage component on both sides of the transformer. The tap changer control function also takes into account the voltage drop of the network components and the healthy state of the high voltage supply network. Voltage limitation functions are also included.
Click on the link to download the general documentation : Please contact our Sales Department
Technical sheet : NC_DTRV
Operation manual : DTRV_TR_FDE20GJ07911415A1
Click on the link to access the technical documentation to attach to your order : DOCACOM_PROTECTA
