SIR-C

Overhead Control & Feeder Protection Relay

Key Features :

Overhead control and feeder protection relay with compact size.
With current, voltage, and frequency functions for primary and secondary distribution.
Auxiliary power supply: 24-230 Vdc/ac.
4 current channels for /1 and /5 CTs and 6 voltage channels for LEA sensors.
Metal housing with high EMC level and wide operating temperature range.
Protection against decoupling, load shedding, and Loss of Main (ROCOF-based).
Circuit breaker (52) and recloser (79) control and signaling.
Front navigation keypad: 7 keys (including RESET), 6 programmable hot keys (CB open/close, recloser block/ unblock, local/remote mode), 3 configurable control LEDs, and 8 programmable alarm LEDs.
SOTF function for fast fault clearing after manual CB closing.
Communication: Front local micro-USB port; Rear communication options: Serial (Modbus RTU, DNP3.0 Serial, IEC60870-5-103) and Ethernet (RJ45 or FO-LC) with Modbus TCP/IP, DNP3.0 TCP/IP, IEC60870-5-104, IEC61850 + SNTP + Web Server.
Optional Wi-Fi and IRIG-B synchronization.
Alarms panel available.
Multiple configurable I/O combinations depending on model.

Load Data Profiling (LDP) with 2160 records in circular mode and configurable sampling rate (1–60 min) through communications.
Non-volatile RAM stores up to 3072 events and DFR with internal RTC, 5/25/50/100 records in COMTRADE format (300/60/30/15 cycles).
Oscillography: Each record with 10 analog and up to 96 configurable digital channels, downloadable via SICom software.