The DTRV product type is a member of the EuroProt+ numerical protection relay, made by Protecta Co. Ltd. The EuroProt+ complex protection in respect of hardware and software is a modular device. The modules are assembled and configured according to the requirements, and then the software determines the functions.
The DTRV relay includes variety of versatile protection functions along with the main differential protection, such as overcurrent, over/under voltage, frequency protections. The other main function is the automatic generator synchronizer. The device contains several functions especially made for generator applications as well, e.g. thermal-based negative sequence overcurrent protection, voltage dependent overcurrent, inadvertent energizing protections, loss of excitation, 100% stator earth fault protection, rotor earth fault etc. It can be applied as a back-up protection relay for downstream equipment (e.g. feeders, cables etc.).
The DTRV relay can support the double breaker terminals at any side of the transformer such as breaker and a half, or ring bus topologies. Note that automatic synchronization is available to one bus in this device. To be able to switch between several buses with the synchronizer please use the standalone version of the automatic generator synchronizer (ASZKG of the DAUT type).
♦ Native IEC 61850 IED with Edition 1 & 2 compatibility.
♦ 84 HP or 42HP wide rack size (height: 3U) with several mounting methods: Rack; Flush mounting; Semi-flush mounting; Wall mounting; Wall-mounting with terminals; Flush mounting with IP54 rated cover.
♦ 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.
♦ Different HMI Types: advanced HMI with color touchscreen and black-and-white display with 4 tactile push buttons. An embedded web server and extended measuring, control and monitoring functions are also available for both types.
♦ 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, 8 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 with duration up to 10s and sampling rate up to
° Event recorder can store more than 10,000 events.
♦ Wide range of communication protocols:
° Ethernet communication: IEC61850;IEC60870-5-104;DNP3.0 TCP;Modbus TCP
° Serial communication: DNP3.0; IEC60870-5-101/103; MODBUS, SPA.
♦ Legacy network based protocols via 100Base-FX and 10/100Base-TX (RJ45). Optional communication ports: Fiber optical Ethernet (MM/ST, SM/FC), RJ45, Serial POF, Serial glass fiber, RS-485/422.
♦ Handle several communication protocols simultaneously.
♦ Built-in self-monitoring to detect internal hardware or software errors.
♦ Different time sources available: NTP/SNTP server; Minute pulse; Legacy protocol master; IRIG-B.
The number and the functionality of the members of each product type is put together according to the application philosophy, keeping in mind the possible main usages. The available configurations of the DTRV type for generator are listed in the table below: