SIL-A – Feeder Protection Relay

The SIL-A is an efficient Feeder Protection Relay with reliable Overcurrent and Earth fault Protection for Primary and Secondary Distribution, particularly suitable for MV switchgear.

Fanox has used the latest hardware technology to develop SIL-A, and it is available in several models according to customer requirements and installation needs. This solution is mainly indicated for installations such as wind farms o photovoltaic panels plants (Renewables).

SIL-A has a design that requires less equipment and space, reducing operating costs and maintenance. The optimal design makes the device’s useful life longer and enhanced safety by reducing hazards and saving installation time.

The SIL-A has the function of direct 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). The Relay offers optional directional earth fault (isolated neutral included) and ground overvoltage protection. 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 SOTF function.

Intuitive for easy handling use, SIL-A has flexible communication options for rear (RS485 for serial and RJ45 for ethernet interface) and frontal port through a micro USB connector.

In terms of rear ports, SIL-A is able to manage multiple industrial protocols:

  • DNP3 and Modbus (both serial or TCP versions)
  • IEC60870-5-103
  • IEC60870-5-104
  • IEC61850.
    All these combinations are selectable by model or general settings.

SIL-A has performed a complete set of type tests in Kema Laboratories (The Netherlands). This independent certification gives our customers higher quality and reliability assurance.

Technical Sheet:

EN / FANOX DATA SIL-A OC FeederProtection ProtectionRelays R019.pdf
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    Features

    The SIL-A is a feeder relay with overcurrent and earth fault protection for primary and secondary distribution with auxiliary power supply 24-230 Vac/dc. The current measurement is obtained by standard current transformers /1 or /5.

    • Metallic box with high electromagnetic compatibility level (EMC) and a wide range of operating temperatures.
    • Direct signalling/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 using 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:
      • 1 RS485 Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial (selectable by general settings).
      • 1RS485 Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial (selectable by general settings) + 1 RJ45 Port: Modbus TCP/IP or IEC60870-5-104 (selectable by general settings).
      • 1 RS485 Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial (selectable by general settings) 1 RJ45 Port: IEC61850
    • The SIL-A has up to 6 configurable inputs and up to 6 configurable outputs (depending on model).
    • SIL-A is fitted with the demand of current (Load Data Profiling) with the following characteristics:
    • The number of records: 744.
    • Recording mode circular.
    • Sampling rate (interval): configurable through communications (1-60 min).
    • SIL-A is provided with non-volatile RAM memory in order to store up to 2048 events and configurable number of disturbance fault recording (DFR), maintaining date & time thanks to its internal RTC (real Time Clock):
    • 5 records in data and COMTRADE format (260 cycles each record): 1 to 8 pre-fault cycles + 252 to 259 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).

    Ansi Protection Functions

    SIL-A Advanced Modelos (A/D)

    50 Instantaneous phase overcurrent
    51 Inverse time phase overcurrent
    50N Instantaneous calculated neutral overcurrent
    50G Instantaneous measured neutral overcurrent
    51N Inverse time calculated neutral overcurrent
    51G Inverse time measured neutral overcurrent
    67G/51G Inverse Time Directional* Measured Neutral Overcurrent
    67NI Inverse time directional isolated calculated neutral overcurrent
    67GI Inverse time directional isolated measured neutral overcurrent
    SOTF Switch On To Fault
    46 Phase balance current protection
    46BC Broken Conductor Detection
    64REF Restricted earth fault
    37 Instantaneous phase undercurrent
    49 Thermal overload
    49T External Trip
    SHB Second Harmonic Blocking
    52 Breaker Wear Monitoring
    50BF Circuit breaker failure
    74TCS Trip Circuit Supervision
    79 AC Reclosing device
    HLT Hot Line Tag
    CLP Cold Load Pickup
    60CTS Phase CT Supervision
    59G Instantaneous measured neutral overvoltage
    86 Trip lockout
    68 Zone selection interlocking (ZSI)
    TB Trip block for switch disconnector
    LMS Load Management System
    PGC Programmable logic control
    * ANSI 67G can be converted into ANSI 51G by setting the “Directionality” parameter to NO

    Aditional Functions

    Software

    Communication Software for all Fanox Protection Relays MV Range

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

    SICom software works with the 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 the 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 blocking/unblocking the recloser
    • Configuration of the inputs
    • Configuration of the outputs
    • Configuration of the causes that start a Fault Report

    The software update does not require any user´s action; 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.

    Application

    Comparison Table

    SIL-ASIU-CSIL GSIL-C
    TypeOC & EF PROTECTIONVOLTAGE & FREQUENCY PROTECTIONLINE, FEEDER AND GENERATOR PROTECTIONLINE, FEEDER AND GENERATOR PROTECTION
    Auxiliary Supply24-230 Vdc/Vac24-230 Vdc/Vac24-48Vdc or 48-230 Vac/dc or 24-230 Vac/dc24-230 Vdc/Vac
    Consumption3,3 – 4,5 W< 6 W. 24-230 Vdc/Vac < 10VA24-48 Vdc and 48-230 Vac/dc < 10VA. 24-230Vac/dc < 20VA24-230Vac/dc < 20VA
    Current measurementStandard CT > 0,5VAn/aStandard CT > 0,5VAStandard CT > 0,5VA
    LPCTn/an/an/an/a
    Voltage measurementn/aVT or directly to the low voltage lineVT or directly to the low voltage lineVT or directly to the low voltage line
    VT connection typen/aAdjustableAdjustableAdjustable
    502n/a22
    50G2n/a11
    50N2n/a11
    50/512n/a4 levels of 67 *4 levels of 67 *
    50/51G2n/a2 levels of 67G *2 levels of 67G *
    50/51N2n/a2 levels of 67N *2 levels of 67N *
    67GI1n/a11
    67NI1n/a11
    50/51/67G 1n/a**
    50/51/67n/an/a**
    SOFT1n/a11
    64REF1n/a11
    521111
    BF1111
    491n/a11
    49T1111
    791111
    HLTn/a√√√
    461n/a11
    CLP1n/a11
    74TCS1111
    74CCSn/a1n/an/a
    Trip Block1n/a11
    68 (Trip Bus)1111
    86√√11
    46BC√n/a11
    60CTS 1n/a11
    60VTSn/an/a11
    Programmable LogicV3V3√√
    371n/a11
    59n/a222
    59N1322
    47n/a111
    27n/a422
    27V1n/a211
    32/40n/an/a44
    81U/On/a844
    25n/a111
    24n/a222
    59-Ln/a111
    27-Ln/a111
    81Rn/a644
    78n/a211
    IRIG-Bn/aOptionalOptionalOptional
    Counters√√√√
    Commands√√√√
    Sett. Group4444
    Inputs3 / 5 / 6 / 9118 / 16 / 24 / 8 + 4 AFD11
    Outputs3 / 4 / 5 / 6 / 757 / 11 / 18 / 7 + 4 HS-O5
    LEDs8 configurable11 configurable11 configurable11 configurable
    HMI20x2 LCD + 11 keys20x4 LCD + 13 key20x4 LCD + 13 keys20x4 LCD + 13 keys
    52 & 79 HMI2 LEDs + 4 keys2 LEDs + 4 keys2 LEDs + 4 keys3 LEDs + 4 keys
    Event2048307230723072
    Fault Reportconfigurable up to 100configurable up to 100configurable up to 100configurable up to 100
    OscillographyConfigurable up to 100 recordsconfigurable up to 100configurable up to 100configurable up to 100
    Current demand√n/a√√
    Local Port (frontal)Micro USBMicro USBMicro USBMicro USB
    Remote Port (rear)RS485 or EthernetRS485 or EthernetRS485 or Ethernet or Fiber OpticRS485 or Ethernet
    Communications ProtocolsRS485 (ModBus RTU or IEC60870-5-103 or DNP3.0 Serial) RJ45 (Modbus TCP/IP or DNP3 TCP/IP or IEC 60870-5-104) RJ45 (IEC61850) + SNTP protocolRS485(ModBus RTU or DNP3.0 Serial or IEC60870-5-103) RJ45 (Modbus TCP/IP or DNP3.0 TCP/IP or IEC60870-5-104) + SNTP protocolRS485(ModBus RTU or DNP3.0 Serial or IEC60870-5-103) RJ45(Modbus TCP/IP or DNP3.0 TCP/IP or IEC60870-5-104) RJ45(IEC 61850) FO-LC(IEC61850) + SNTP protocolRS485(ModBus RTU or DNP3.0 Serial or IEC60870-5-103) RJ45 (Modbus TCP/IP or DNP3.0 TCP/IP or IEC60870-5-104) + SNTP protocol
    Size of177 x 107 mm177 x 107 mm198 x 187 mm177 x 107 mm

    Related Products

    SIA-F
    SF6 & METAL-CLAD SWITCHGEAR PROTECTION RELAYS

    Fanox SIA-F is our most competitive and cost-effective solution for overcurrent and earth-fault protection. Like all other Fanox protection relays the compact size with reduced depth makes it easier to install and saves costs.

    The relay can be also supplied by a USB cable connected to the laptop, with the USB KITCOM adapter or a standard power bank. To allow the communication, relays are provided with a local micro USB front port and with remote communication with different protocols on the rear side depending on model.

    Additionally, the use of external CTs allows you to modify their relation adapting to your requirements and reducing installation costs while having a wider range of power supply.

    Ansi Code Functions

    50, 51, 50G, 50N, 49, 52, 50BF, 86, 68,TB, PGC
    Aditional Functions:
    CNT, RTC, PGC, HMI, SER, DFR, LDP, MET, STTG, CMMD