SIR-C

Feeder Protection & Recloser Control Relay

The SIR-C is the right solution for recloser control and feeder protection relay with current, voltage, and frequency functions for primary and secondary distribution with an auxiliary power supply of 24-230 Vdc/ac.
With the ability to measure voltage through capacitive or resistive sensors (LEAs) it has 4 current channels and up to 6 voltage channels.

The SIR-C provides complete protection for industrial and utility feeder protection, with flexible protection capabilities, including Inverse Time Directional* Phase Overcurrent, Instantaneous calculated and measured neutral overcurrent, Inverse Time Directional* Calculated and Measured Neutral Overcurrent, auto reclosing, Phase Balance voltage protection (Bus bar and Line), frequency, second-and Second Harmonic Blocking, optional low-energy analog (LEA) voltage inputs, IEC cable/line thermal element, islanding detection, and much more.

Relay is provided with a frontal micro USB port to communicate with our own Software and rear serial or ethernet ports RS485/RJ45 enabling communication with other integrated systems through, IEC 60870 – 5 – 103/104, Modbus, DNP3.

The oscillography is downloaded by a communications port. The Fanox SICom communications program allows the oscillography record to be downloaded and saved in COMTRADE format (IEEE C37.111-1991).

  • The SIR-C is a recloser control and feeder protection relay with current, voltage, and frequency functions for primary and secondary distribution with an auxiliary power supply of 24-230 Vdc/ac.
  • 4 current channels and 6 voltage channels.
  • Voltage measurement through capacitive and resistive sensors (LEAs).
  • Metallic box with high electromagnetic compatibility level (EMC) and wide range of operating temperature.
  • Protection of decoupling, load shedding, and loss of main (islanding).
    Loss of Main (islanding) occurs when part of the public utility network loses connection with the rest of the system. If this situation is not detected, then the generator could remain connected, causing a safety hazard within the network. Automatic reconnection of the generator to the network may occur causing damage to the generator and the network. SIR-C relay detects this situation thanks to its voltage and frequency functions focused on the Rate of change of frequency (ROCOF) method.
  • Signaling/control of the circuit breaker (52 function) and the recloser (79 function).
  • Zone selection interlocking – ZSI (68 function) is available through configurable inputs and outputs thanks to the programmable logic (PGC).
  • In case a CB is manually closed, a switch on to an existing fault may occur. This fault condition is critical if the overcurrent protection function does not clear the fault until the adjusted time delay is finished. It is necessary, in those cases, to clear the fault quickly by means of the SOTF function.
  • To allow the communication, relays are provided with a local micro USB front port and with remote communication with different options (ports and protocols) on the rear side:
    • Rear RS485 Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial.
    • Rear RJ45 Port: Modbus TCP/IP, DNP3.0 TCP/IP or IEC60870-5-104 + Web Server + SNTP Protocol.
  • Synchronization through IRIG-B is optional depending on the model.
  • The SIR-C is provided with 11 configurable inputs and 5 configurable outputs.
  • The SIR-C is fitted with the demand of power (Load Data Profiling) with the following characteristics:
    • A number of records: 2160.
    • Recording mode circular.
    • Sampling rate (interval): configurable through communications (1-60 min).
  • An alarms panel is available.
  • The SIR-C is provided with non-volatile RAM memory in order to store up to 3072 events and disturbance fault recording (DFR), maintaining date & time thanks to its internal RTC (Real Time Clock).
    • 5 records in data and COMTRADE format (300 cycles each record): 1 to 8 pre-fault cycles + 292 to 299 postfault cycles.
    • 25 records in data and COMTRADE format (60 cycles each record): 1 to 8 pre-fault cycles + 52 to 59 postfault cycles.
    • 50 records in data and COMTRADE format (30 cycles each record): 1 to 8 pre-fault cycles + 22 to 29 postfault cycles.
    • 100 records in data and COMTRADE format (15 cycles each record): 1 to 8 pre-fault cycles + 7 to 14 postfault cycles.)
  • The oscillography is downloaded by a communications port. The SICom communications program allows the oscillography record to be downloaded and saved in COMTRADE format (IEEE C37.111-1991).
50Instantaneous phase overcurrent
67/51Inverse Time Directional* Phase Overcurrent
50N Instantaneous calculated neutral overcurrent
50G Instantaneous measured neutral overcurrent
67N/51NInverse Time Directional* Calculated Neutral Overcurrent
67G/51GInverse Time Directional* Measured Neutral Overcurrent
67NIDirectional isolated calculated neutral overcurrent
67GIDirectional isolated measured neutral overcurrent
SOTFSwitch On To Fault
46Phase balance current protection
46BCBroken Conductor Detection
64REFRestricted earth fault
49Thermal overload
49T External Trip
37Instantaneous phase undercurrent
SHBSecond Harmonic Blocking
59Instantaneous phase overvoltage (Bus bar)
59NInstantaneous Calculated neutral overvoltage (Bus bar)
59-LInstantaneous Line overvoltage (Line)
59N-LInstantaneous Calculated neutral overvoltage (Line)
47Phase Balance voltage protection (Bus bar)
47-LPhase Balance voltage protection (Line)
27Instantaneous Phase Undervoltage (Bus bar)
27-LInstantaneous phase Undervoltage (Line)
27V1Instantaneous Positive sequence Undervoltage (Bus bar)
27V1-LInstantaneous Positive sequence Undervoltage (Line)
32Directional Overpower
81O/UUnder/Overfrequency
81RRate of change of Frequency (ROCOF)
78Out of Step (Vector Shift)
CLP Cold Load pickup
79 ACReclosing device
SCM Sequence Coordination Mode
SZM Sectionalizer Mode
HLT Hot Line Tag
52Breaker wear monitoring
25Synchro Check
50BFCircuit Breaker Failure
74TCSTrip Circuit Supervision
60CTSPhase CT Supervision
60VTSPhase LPVT Supervision
86Trip lockout
68 Zone selection interlocking (ZSI)
PGC Programmable logic control

*ANSI 67, ANSI 67G, and ANSI 67N can be converted into ANSI 51, ANSI 51G, and ANSI 51N respectively by setting the “Directionality” parameter to NO.

ADDITIONAL FUNCTIONS

CNT Counters
RTC Real Time Clock
ALRM Alarm panel
PGC Programmable Logic Control
HMI Human Machine Interface
SER Sequential Event Recording
DFR Disturbance Fault Recording
LDP Load Data Profiling
MET Metering
STTG Settings Groups
CMMD Commands

Communication Software for SIA & SIL Protection Relays

The SICom PC software has been designed and programmed to gain access to all of Fanox relays information, to modify the settings and configuration, check states and measurements and analyze and save events and fault reports using a graphic-friendly user interface.

SICom software works with Windows® Windows 7, Windows 8, Windows 8.1, and Windows 10 operating systems.

  • General data reading: Complete model, Version, Serial number, etc.
  • States reading
  • Measurements reading
  • Reading and changing settings
  • Reading and changing configuration
  • Reading and deleting events
  • Reading and deleting fault reports
  • Reading and deleting demand current (load data profiling)
  • Reading and saving oscillographic records in Comtrade format
  • Changing the user passwords
  • Saving and Loading Settings files
  • Saving and loading configuration files
  • Saving events and fault reports
  • Saving demand current (load data profiling)
  • Date-time synchronization
  • Configuring the communication parameters
  • Reading and changing counters
  • Commands for opening and closing the circuit breaker and block/unblock the recloser
  • Configuration of the inputs
  • Configuration of the outputs
  • Configuration of the causes that start a Fault Report

The update of the software does not require any user´s action, this is, if the computer is connected to the Internet, SICom updates itself when it is started.
It will allow you to prepare all the settings and relay configurations without having the relay connected to the PC (offline mode), reducing engineering and commissioning time.
SICom program uses Modbus protocol, so only the ports with this protocol can be used to establish the communication.

Related products

SIR-A 
RECLOSER CONTROL & FEEDER PROTECTION RELAY

The Fanox SIR-A is the relay that offers the most complete solution for recloser control and feeder protection with current, voltage, and frequency functions for primary and secondary distribution.

  • SIR-A has 4 current channels and up to 6 voltage channels with the advantage of measuring the voltage through capacitive and resistive sensors.
  • Intuitive for easy handling use, with flexible communication options.
  • In terms of rear ports, SIR-A can manage multiple industrial protocols: DNP3 and Modbus (both serial or TCP versions), IEC60870-5-103, IEC60870-5-104, and IEC61850.

Ansi Code Functions
50, 67/51, 50N, 50G, 67N/51N, 67G/51G, 67NI, 67GI, SOTF, 46, 46BC, 49, 49T, 37, SHB, 59, 59N, 59-L, 59N-L, 47, 47-L, 27 I, 27-L, 27V1, 27V1-L, 32, 81O/U, 81R, 78, CLP, 79 AC, SCM, SZM, 52, 25, HLT, 50BF, 74TCS, 60CTS, 60VTS, 86, 68, PGC

* ANSI 67, ANSI 67G, and ANSI 67N can be converted into ANSI 51, ANSI 51G, and ANSI 51N respectively by setting the “Directionality” parameter to NO

Additional Functions
CNT, RTC, ALRM, PGC, HMI, SER, DFR, LDP, MET, STTG, CMMD