XMORE XMR-T — protection of two- and three-winding transformers
The XMR-T terminal of the XMORE platform protects two- and three-winding power transformers. The main protection is differential, complemented by restricted earth fault protection, overexcitation protection and current and voltage functions. Up to 12 analog inputs.
- Object
- two- and three-winding transformers
- Analog inputs
- up to 12
- Differential protection
- with dual slope, 87T
- Additional
- 64REF, 24 (overexcitation), I2/I1, 50N/51N, current, voltage and frequency protections, transfer trip
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
XMORE is the newest line of devices for protection in power generation, transmission and distribution. The platform also covers protection of feeders, motors, generators and capacitor banks. It addresses the segments of network companies, renewable generation, the oil and gas industry, transport and energy-intensive industry. The modularity of hardware and software makes it possible to build both basic and complex configurations on one platform and to add functions during operation.
The main function of XMR-T is transformer differential protection with restraint and a dual-slope characteristic (87T). It is complemented by low-impedance restricted earth fault protection (64REF), overexcitation protection (24), supervision of the negative-to-positive sequence current ratio (I2/I1), zero-sequence overcurrent protection (50N/51N) with several stages, overcurrent, undercurrent, overvoltage and undervoltage protections, frequency supervision and a transfer trip function. Overcurrent protection (50/51) is implemented separately for the high-voltage and low-voltage sides. The set of functions is adapted to the specific transformer by connectable hardware and software packs. Thermal protection via Pt100 sensors (function 26) is optional.
Measurement accuracy is supported by up to 12 analog inputs, fault recording at 32 samples per cycle and measurement for protections at 64 samples per cycle. Time is synchronized via PTP (IEC 1588) and SNTP, redundancy is provided by HSR, PRP and RSTP, and cybersecurity is built in. Protocols: IEC 61850 Ed.1/Ed.2, IEC 60870-5-103, Modbus and DNP3 (serial and TCP). The HW PACK offers an optical Ethernet port for IEC 61850 and a local RJ45 port for configuration in ThyVisor software. A DNV certificate confirms compliance of the IEC 61850 Ed.2 server.
An order code table, a dimensional drawing with the cutout and a leaflet for XMR-T are published for the series. The terminal is installed on transformers of main step-down substations of industrial enterprises, at 110/20 kV and 20/0.4 kV substations, on step-up transformers of solar and wind plants and on auxiliary transformers of power plants.
Technical specifications
| Object | two- and three-winding transformers |
|---|---|
| Analog inputs | up to 12 |
| Differential protection | with dual slope, 87T |
| Additional | 64REF, 24 (overexcitation), I2/I1, 50N/51N, current, voltage and frequency protections, transfer trip |
| Fault recorder | 32 samples/cycle; measurement 64 samples/cycle |
| Synchronization | PTP (IEC 1588), SNTP |
| Redundancy | HSR, PRP, RSTP |
| Protocols | IEC 61850 Ed.1/Ed.2, IEC 60870-5-103, Modbus, DNP3 |
Request a price and lead time
XMORE XMR-T — protection of two- and three-winding transformers. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What differential protection does XMR-T have?
Transformer differential protection with restraint and a dual-slope characteristic (87T). It is complemented by 64REF, overexcitation protection (24) and 50N/51N.
How many analog inputs does XMR-T have?
Up to 12. Faults are recorded at 32 samples per cycle, and measurement for protections runs at 64 samples per cycle.
Which transformers is XMR-T used for?
Two- and three-winding power transformers, including at 110/20 kV and 20/0.4 kV substations and step-up transformers of solar and wind plants.
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