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Feeder Monitoring System


The Feeder Remote Terminal Unit (FRTU) for SAIFI /SAIDI measurement shall be installed at primary substation to acquire data from status input devices of breakers or protection relay viz O/C & E/F , CMRs , Multi-function Transducers (MFTs), discrete transducers for analog data The FRTUs interfaced with the substation equipment, communication equipment, power supply distribution boards; for which all the interface cables, TBs, wires, lugs, glands etc.

Feeder Monitoring System

Acquiring analog values from Multifunction Transducers or smart meter,


Status inputs of devices from the substation, processing and transmitting to Master stations.


Data transmission rates - 300 to 19200 bps for Serial ports for MODBUS. /10/100 mbps for TCP/IP Ethernet ports


IEC 60870-5-104 protocol to communicate with the Master station(s), IEC 60870-5-101 for slave devices. & MODBUS protocol over RS485 interface, to communicate with the MFTs. For slave devices, IEC 60870-5-104 in addition to /101 may be considered.


Automatic start-up and initialization following restoration of power after an outage without need of manual intervention. All restarts shall be reported to the connected master stations.


Remote database downloading of FRTU from master stations Act as data concentrator on IEC60870-5-101/104/MODBUS protocols


Internal battery backup to hold data in SOE buffer memory & also maintaining the time & date.


As the system will use public domain such GPRS/3G/4G etc., security with SSL/VPN , SNMP

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