SIA-B Specific CTs

Dual | Self-Powered Overcurrent Protection

 

The SIA-B is Dual & Self-powered Overcurrent and Earth Fault Protection Relay, using the operating current through three specific current transformers fitted on the lines. These transformers are also used to obtain current measurements. Besides, SIA-B can be used with an auxiliary power supply (24-230Vac/dc). The relay can be also supplied by a USB cable connected to the laptop, with the USB KITCOM adapter or a standard power bank.

The protection relay offers the advantage in self-powered mode, which starts up from 0.4 times the minimum primary current of the CT (three-phase current).

SIA-B is suitable for RMUs, SF6 insulated, and compact switchgear, in those installations where the space is critical, making the maintenance much more manageable and its lightweight helps the customer to save costs in transport.

Ansi Code Functions

50 Instantaneous phase overcurrent
51 Inverse time phase overcurrent
50N Instantaneous calculated neutral overcurrent
51N Inverse time calculated neutral overcurrent
SHB Second Harmonic Blocking
49T External trip
49 Thermal overload
TB Trip block for switch disconnector
PGC Programmable logic control

ADDITIONAL FUNCTIONS

RTC Real Time Clock
PGC Programmable LogicControl
HMI Human Machine Interface
SER Sequential Event Recording
DFR Disturbance Fault Recording
MET Metering
STTG Settings Groups
CMMD Commands

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 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.

Application

Comparison Table

SIA-B Specific CT'sSIA-B Standard CT'sSIA-C Standard CT'sSIA-F
TYPESELF & DUAL POWERED (SELF+AUX)SELF & DUAL POWERED (SELF+AUX)SELF & DUAL POWERED (SELF+AUX)AUXILIARY POWERED
Auxiliary Supply24-230 Vac/dc24-230 Vac/dc24Vdc230Vac48 Vdc110-230 Vac/Vdc24-220 Vcc / 48-230 Vac
Self Power SupplyI > 0,35 x Is min (x3)0,075 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 - 2VAStandard CT/1A - 2.5VA Standard CT/5A - 5VAStandard CT/1 - 0,5VA Standard CT/5A - 0.5VA
501221
50G221
50N1
511111
51G111
51N1
SHB111
74CT1
46BC1
4611
791
52111
50BF111
491111
49T1111
CLP111
74TCS 1
Trip Block111
68 Zone Selection interbloking111
86√√√
PGCProgrammable LogicV3V3V3V3
Counters√√√
Commands√√√√
Sett. Group243/43
Inputs--- EXT.TRIP3 DI--- EXT.TRIP 2DI 2DI + EXT.TRIP--- 2DI
Outputs--- 2NC-NO3 NC-NO--- 2 NC-NO 3 NO1 NO + 2 NC-NO
Output for STRIKER24 Vdc – 135 mJ24 Vdc – 135 mJ24 Vdc – 135 mJ
LEDs2 LEDs 2 LEDs +1MAG.FLAG4 LEDs3 LEDs + 1 MAG.FLAGS 3 LEDs + 3 MAG.FLAGS3 LEDs configurable
HMI20x2 LCD + 7/8 keys20x2 LCD + 8 keys20x2 LCD + 7/8 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)Micro USBMicro USBRS232 Micro USBMicro USB
Remote Port (rear)RS485RS485RS485RS485
Communications ProtocolsModBus RTUModBus RTU ModBus RTU or DNP3.0ModBus RTU ModBus RTU or IEC60870-5-103ModBus RTU DNP3.0
Size of (HxW)Vertical: 120,65 x 167,80 mmHorizontal: 185,80 x 102,7 mm90 x 245 mmVertical Compact: 177 x 155 mmVertical Standard: 177 x 189 mmHorizontal: 177,8 x 290,3 mm167,80 x 120,65 mm

SIMILAR PRODUCT

    SIA-B Standard CT’s 

    SIA-C