TP-MFRG
PROTECTION & CONTROL RELAY FOR PRIMARY SUBSTATION
Tesmec developed an innovative device that supports IEC 61850 protocol with GOOSE messaging communication for high-speed protection, fault isolation and restoration. TP-MFRG meets today’s requirements for smart grids and it is designed to be installed in primary distribution substation.
The device can be configured to protect different types of bay (i.e. feeders, bus-couplers, power factor correction capacitors, neutral forming transformer (NFT), ...). TP-MFRG can control, by optical fiber connection, remote modules named TP-RIO3 to acquire I/O far away. The device is housed in 3U rugged metal box suitable to be installed in 19-inch racks.
Technical Specifications
TP-MFRG comes with four Ethernet ports:
- One 10/100 Base-TX port on front panel for calibrations and local monitoring
- One 100 BASE-FX port with fiber-optic LC connector on the rear for data exchange (IEC61850: Station-Bus)
- Two 100 BASE-FX ports with fiber-optic LC connector on the rear for connection to remote modules T-RIO (IEC61850 or MODBUS ZTCP-IP: Process-Bus)
TP-MFRG supports different types of neutral connection: isoled neutral, resistance-earthed, compensated (Petersen coil) and solidly-earthed grids. It uses conventional current and voltage transformer to receive measurement signals.
TP-MFRG is equipped with:
- 5 solid state control relays
- 6 signalling relays
- 6 opto-insulated inputs
- 4 analog voltage channels
- 4 analog current channels
- Protection
- Control
- Measurement
- Communication (RTU)
- Diagnostic
- Automation (IEC61131)
- DFR (Data Fault Recorder)
- Compliant IEC61850
Technical data
GENERAL RATINGS
| Supply voltage | 50÷142 Vdc / 36÷101 Vac, protected against polarity inversion |
| Power consumption | 22 VA |
| Transient overload (1 sec) | 2Vn |
| Max Inrush current (10 msec) | 8A |
VOLTAGE ANALOG CHANNELS
| Voltage channels | 4 |
| Inputs voltage level | 0 - 100 Vac / 0 - (100/√3) Vac |
| Operating frequency | 45 - 70 Hz |
| Accuracy class | 0,001 Vn |
| Permanent overload | 1,3 Vn |
| Transient overload (10sec) | 2 Vn |
| Power consumption (single channel) | < 0,2 VA |
CURRENT ANALOG CHANNELS
| Current channels | 4 |
| Inputs current level | 1 A / 5 A |
| Measurement range | 0,5 % - 3000 % In |
| Operating frequency | 45 - 70 Hz |
| Accuracy class | 0,005 In |
| Permanent overload | 5 In |
| Transient overload | 250 A (1s), 800 A (half-wave, 10 msec) |
| Power consumption (single channel) | < 0,05 VA |
PROTECTION FUNCTIONS (ANSI/IEEE)
| 50/51 (overcurrent) |
| 50N/51N (earth overcurrent) |
| 67/67N (negative sequence overcurrent / unbalance) |
| 59/59N (overvoltage / neutral overvoltage) |
| 79 (auto reclosing) |
| 25 (syncro-check) |
| 27 (undervoltage) |
| 32P (directional / reverse power) |
| 81 (frequency) |
| 2ndH REST (INrush current) |