Microprocessor protection relays and controllers (ETR500, ETR300-R, EVRC2A-NT, ETMFC, ETR304/306, ETCPU200/300)
The microprocessor protection relays and controllers cover substation switchgear, reclosers and LBS of overhead lines, RMU of cable networks and DC traction switchgear. The ETR500 relay has a 7-inch touch display and the IEC 61850 protocol. The devices work in distribution automation systems with SCADA.
- Substations
- ETR500-T/F/M/FT/DG; OCR/OCGR/OVR/OVGR/SGR/POR
- Overhead lines
- ETR300-R, EVRC2A-NT (reclosers); ETCAP121 (capacitors); ETMFC50 (EFI); ETMFC101-N1/N2 (LBS/EFI); ETMFC610
- Cable networks
- ETR-102, ETCCU104, ETR20/H (self-powered), ETR304, ETR306
- DC traction
- ETCPU200 + HMI, ETCPU300
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The company develops microprocessor protection relays and controllers for all its switching apparatus and uses them in distribution automation systems and smart grids. The range is divided by site into substation, overhead line, cable network and DC traction.
For substation switchgear the intelligent relay ETR500 with a selectable set of functions is intended. The ETR500-T protects a transformer, -F a feeder, -M a motor, -FT a transformer and feeder, and -DG distributed generation. The relay has a touch LCD with menus in English, Spanish, Chinese and Korean and dual communication over DNP 3.0, MODBUS, IEC 60870-5-101/104 and IEC 61850. The software changes settings, collects events, shows vector diagrams, analyses harmonics and records waveforms, and the logic is programmable. For simpler switchgear there are economical relays OCR, OCGR, OVR, OVGR, SGR and POR, that is, overcurrent, earth fault, overvoltage, sensitive earth fault and phase loss protection, with DNP and MODBUS communication.
For overhead lines, digital recloser controllers ETR300-R and EVRC2A-NT are produced with a built-in RTU, a display and the protocols DNP 3.0, MODBUS, IEC 60870-5-101/104. The ETR300-R is more compact and additionally supports IEC 61850 and programmable logic. Both work with IEEE C37.112, IEC 255-3, McGraw Edison and user-defined curves, and functions 51P, 51G, 50P, 50G, 46, 81, 27, 59, 67, 79 and CLPU. The ETCAP121 controls a capacitor switch, and the ETMFC50 protects an EFI (51, 50, sectionaliser, contact wear monitoring, inrush current suppression). The multifunction ETMFC101-N1/N2 with a built-in RTU for LBS and EFI measure, detect phase loss, monitor synchronism, indicate faults, perform auto-sectionaliser and tie point functions, and have PLC, PQM, GPS, IRIG and SMS. The ETMFC610 serves as a controller of LBS and EFI.
In cable networks the ETR-102 controls two breakers of Pad-Mount switchgear, and the ETCCU104 controls four feeders and has a built-in RTU. The ETR20/H is powered from the operating current and is installed on manual RMU, with functions 51, 50, 51N, 50N, a 1 A current transformer input, operating accuracy ±10 % or 2 A, and timing accuracy ±20 % or 35 ms. The ETR304 and ETR306 serve 4- and 6-feeder switchgear with RTU and SCADA.
For DC switchgear the ETCPU200 with HMI and the new-generation ETCPU300 are intended. They perform protection, control, monitoring, measurement, recording, PLC and communication, with functions di/dt, ΔI, ΔVI, 76D, 32, 80, voltage differential protection, 26F, 64D, 64HR, 64P, auto-reclosing and line testing. Inputs and outputs are 24 DO, 40/36 DI and 8/16 AI, and the ETCPU200 has a 240×128 graphic LCD.
Technical specifications
| Substations | ETR500-T/F/M/FT/DG; OCR/OCGR/OVR/OVGR/SGR/POR |
|---|---|
| Overhead lines | ETR300-R, EVRC2A-NT (reclosers); ETCAP121 (capacitors); ETMFC50 (EFI); ETMFC101-N1/N2 (LBS/EFI); ETMFC610 |
| Cable networks | ETR-102, ETCCU104, ETR20/H (self-powered), ETR304, ETR306 |
| DC traction | ETCPU200 + HMI, ETCPU300 |
| Protocols | DNP 3.0, MODBUS, IEC 60870-5-101/104, IEC 61850 |
| Functions | 51P/51G/50P/50G/46/81/27/59/67/79, CLPU; for DC — di/dt, ΔI, 76D, 32, 80, 64D, 64P |
Request a price and lead time
Microprocessor protection relays and controllers (ETR500, ETR300-R, EVRC2A-NT, ETMFC, ETR304/306, ETCPU200/300). We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8536 49 00 00 |
|---|---|
| HS, 6 digits | 8536 49 |
| CN (EU) | 8536 49 00 |
| HTSUS (USA) | 8536 49 00 75 |
| China customs tariff | 8536 49 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which communication protocols do the relays support?
The ETR500 and ETR300-R work over DNP 3.0, MODBUS, IEC 60870-5-101/104 and IEC 61850. The economical relays OCR and OVR have DNP and MODBUS communication.
Which relay should be chosen to protect a substation transformer?
For substation switchgear the ETR500-T is intended, and the ETR500-FT for joint protection of a transformer and feeder. Both have a 7-inch touch display.
Which relays protect DC traction switchgear?
Traction switchgear is protected by the ETCPU200 with HMI or the new-generation ETCPU300. They perform the di/dt, ΔI, 76D, 32, 80, 64D and 64P functions.
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