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.

Download the datasheet

Technical Specifications

Ethernet ports

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)

Connections

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

Features

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)