SIA-F – SF6 & Metalclad Switchgear OC&EF Protection Relay

SIA-F protection relay is suitable to protect installations against O/C and E/F. Its compact size makes this relay adequate for installition where the space is critical. Optionally, other protection functions as the thermal image (ANSI 49) the trip block for switch disconnector and control functions as the monitorization of the CB (ANSI 52), The breaker failure (ANSI 50BF) can be included.

Besides, its special mechanic with the current transformers in charge of the measurement outside, allow the user to change the transformation ratio (by giving turnes throgh the holes of these current transformers.

The relay is designed to work with standard current transformers (1 A or 5 A of secondary) and is able to measure up to 30 times the nominal current.  It is provided with local and rear communications, with optional protocols as Modbus RTU or DNP3.0 Serial.
Up to 3 outputs and 2 inputs are included in the relay to monitor and signal different situations in the installation.

The SIA-F is able to record up to 200 events, 4 fault reports and 1 oscillografic records in non-volatile RAM memory with the date and time thanks to its internal real clock (RTC)
Thanks to its versatility and to its compact size, this relay can be used in a lot of applications.

Main Applications: Secondary Distribution, RMUs and SF6 insulated Switchgears

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The SIA-F is an overcurrent protection relay with a switched auxiliary power supply (24-220 Vdc / 48-230 Vac). The current is measured by using /5 or /1 current transformers. The relay can be also power supplied by a USB cable connected to the laptop or an standard power bank.

  • Protection functions: 50, 50/51, 50N/G, 50/51 N/G, CLP, 86, PLC.
  • Trip block for switch disconnector, 49, 49T, 52, 50BF, 68 as optionals.
  • High electromagnetic compatibility.
  • With circuit breaker control and monitoring (circuit breaker status, number of openings, accumulated amperes, etc.).
  • Compact size with reduced depth makes it easier to install and saves costs.
  • USB connection on the front (Modbus RTU communication protocol).
  • A specific test menu is provided.
  • There are three configurable LED indicators on the front of the SIA-F equipment. By default, they indicate indicate if the equipment is On (LED ON), if an alarm has happened (LED ALARM) or if a trip has happened (LED TRIP).
  • Programmable logic (PLC)
  • 1 Oscillographic record, non-volatile RAM memory in order to store up to 200 events and 4 fault reports, without power supply thanks to its internal RTC (Real Time Clock)

50 Phase instantaneous overcurrent
51 Phase inverse time overcurrent
50N/G Neutral instantaneous overcurrent measured/calculated
51N/G Neutral inverse time overcurrent measured/calculated
52 Circuit breaker monitoring
49T
 External trip
68 Trip Bus
86 Trip output lockout with PLC
CLP
 Cold Load Pick-up
50BF Circuit breaker opening fault
67N Neutral directional overcurrent

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 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 system.

  • 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 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.

SIA RANGESIA-B Specific CT'sSIA-B Standard CT'sSIA-CSIA-F
TYPESELF & DUAL POWERED (SELF+AUX)SELF & DUAL POWERED (SELF+AUX)SELF & DUAL POWERED (SELF+AUX)AUXILIARY POWERED
Auxiliary Supply24Vdc
110Vac
230Vac
24-230 Vac/dc24Vdc
230Vac
48 Vdc
110-230 Vac/Vdc
24-230 Vac/dc
Self Power Supply3.2A, 6.4A, 12.8A, 25.6A or 51.2A
depending on the CT. (x3)
0,07 In (x3)0,1 In (x3)
External batteryUSB cable / Power bankUSB cable / Power bankKITCOMUSB cable / Power bank
Internal battery√ (*)√ (*)
Consumption0,5 W1,5 W0,5 W1,5 – 2,2 W
CTSpecific CTStandard CT (/1A 2VA)Standard CT (/1 2,5VA; /5 5VA)Standard CT 0,5VA
501221
50N/G221
50N1
50/511111
50/51N/G111
50/51N1
SHB11
74CT1
46BC1
4611
791
52111
50BF111
491111
49T1111
CLP111
74TCS 1
Trip Block1111
68 Zone Selection interbloking111
86
Programmable LogicV3V3V3V3
Counters
Commands
Sett. Group2443
Inputs132 + EXT.TRIP2
Outputs- / 2NC - NO3 NC - NO2 NC - NO / 3 NO1 NO + 1 NC - NO
Output for STRIKER24 Vdc – 135 mJ24 Vdc – 135 mJ24 Vdc – 135 mJ
LEDs2 LEDs +1MAG.FLAG4 LEDs3 LEDs +3 MAG.FLAGS3 LEDs configurable
HMI20X2 LCD + 7 keys20X2 LCD + 7 keys20X2 LCD + 7 keys20X2 LCD + 7 keys
Event10010241024200
Fault Report420204
Oscillography10 records x 50 cycles10 records x 50 cycles1 record x 22 cycles
Current demand
Local Port (frontal)USBMicro USBRS232USB
Remote Port (rear)RS485RS485RS485RS485
Communications ProtocolsModBus RTUModBus RTU / DNP3.0ModBus RTU / IEC60870-5-103ModBus RTU / DNP3.0
Size ofVertical: 120,65 x 167,80 mm
Horizontal: 185,80 x 102,7 mm
90 X 245 mmVertical Compact: 177 x 155 mm
Vertical Standard: 177 x 189 mm
Horizontal: 177,8 x 290,3 mm
167,80 x 120,65 mm

Related Products

SIA-B Specific CT’s
Dual & Self-Powered Protection Relays

Fanox SIA-B with Specific CT’s is a powerfull solution for overcurrent protection. This relay is the perfect choice if you look for a competitive and complete solution composed by relay + CTs for overcurrent protection while having all functions required for a maximum safety.

Protection functions:

  • 50 + 50/51 + 50N + 50/51N.
  • 49 + 49T + TB as additional protection functions.