SIR-A

Recloser Control & Feeder Protection Relay 

Key Features : 

  • Overhead control and feeder protection relay.
  • With current, voltage, and frequency functions.
  • Auxiliary power supply: 24–230 Vdc/ac, 48–230 Vdc/ac, or 24–48 Vdc (depending on model).
  • 4 current channels (/1 and /5 CTs) and 6 voltage channels (capacitive and resistive LPVTs).
  • Metal housing with high EMC 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 keypad with 7 navigation keys, 6 hotkeys, configurable LEDs (depending on model).
  • Arc Flash Detection (4 AFD inputs + 4 high-speed outputs, depending on model).
  • SOTF function for fast fault clearing on manual CB closing.
  • Communication: Front micro-USB; Rear serial: Modbus RTU, DNP3.0 Serial, IEC60870-5-103; Rear Ethernet (RJ45/FO-LC): 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): 2160 records, circular, 1–60 min sampling interval.

 

  • Non-volatile RAM stores up to 3072 events and DFR with internal RTC, COMTRADE format (pre/post-fault configurable).
  • Oscillography: Each DFR record 10 analogue + up to 96 digital channels, downloadable via SICom software.

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