11/12/2023
Fanox SIR-A Overhead Control / Feeder Protection
The Fanox SIR-A offers a complete Overhead Control / RTU and Feeder Protection solution with current, voltage, and frequency functions.
It is available with an auxiliary power supply of 24-230 Vdc / ac, 48-230 Vdc / ca, or 24-48 Vdc (depending on the model that best suits the installation).
SIR-A has 4 current channels and up to 6 voltage channels, with the advantage of measuring the voltage through capacitive and resistive sensors.
Adaptation C: has Thirteen (13) programmable alarm LEDs + 8 configurable keys with their associated configurable LED
Like all Fanox relays, SIR-A is intuitive for easy handling use and has flexible communication options; 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 Serial Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial (selectable by general settings).
> Adaptation B: Rear RS485 port
> Adaptation C: Rear RS485 or RS232 port (selectable by the user, both ports are not available simultaneously)
- Rear RJ45 Port: Modbus TCP/IP, DNP3.0 TCP/IP, IEC60870-5-104 (selectable by general settings) + SNTP Protocol + Web Server.
- Rear RJ45: IEC61850
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 the SOTF function.
The SIR-A is an Overhead Control / RTU & 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, 48-230 Vdc/ac, or 24-48 Vdc (depending on model).
- 4 current channels and 6 voltage channels for capacitive and resistive low-power voltage sensors (LEA).
- 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, 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-A relay detects this situation thanks to its voltage and frequency functions focused on the Rate of change of frequency (ROCOF) method.
- Signaling/control the circuit breaker (52 function) and the recloser (79 function).
- The front part of the SIRA is provided with a navigation keypad made of 7 keys (including the RESET key), 6 programmable hot keys that by default are configured: two (2) keys to open and close the CB, two (2) keys to block and unblock the recloser and two (2) keys to put the relay in local or remote mode with their associated three (3) configurable control LEDs. Besides, depending on the model:
> Adaptation B: Eight (8) programmable alarm LEDs
> Adaptation C: Thirteen (13) programmable alarm LEDs + 8 configurable keys with their associated configurable LED.
- Arc Flash detection (AFD) with 4 AFD inputs and 4 high-speed outputs available depending on the model. This functionality, along with the possibility of having WIFI communication, allows the users to set and configure the relay through Fanox free software and to operate the relay without being present in the installation, prioritizing security.
- 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.
- 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 Serial Port: IEC60870-5-103, Modbus RTU or DNP3.0 Serial (selectable by general settings).
+ Adaptation B: Rear RS485 port
+ Adaptation C: Rear RS485 or RS232 port (selectable by the user, both ports are not available simultaneously)
> Rear RJ45 Port: Modbus TCP/IP, DNP3.0 TCP/IP, IEC60870-5-104 (selectable by general settings) + SNTP Protocol + Web Server.
> Rear RJ45: IEC61850.
- Wireless communication (WiFi) and synchronization through IRIG-B are optional, depending on the model.
- Alarms panel is available.
- The SIR-A is provided with (depending on the model):
> 8 configurable inputs and 7 configurable outputs.
> 24 configurable inputs and 7 configurable outputs.
> 8 configurable inputs and 18 configurable outputs.
> 16 configurable inputs and 11 configurable outputs.
> 8 configurable inputs, 7 configurable outputs, 4 AFD inputs, and 4 High-Speed outputs.
- SIR-A is fitted with the demand of power (Load Data Profiling) with the following characteristics:
> Number of records: 2160.
> Recording mode circular.
> Sampling rate (interval): configurable through communications (1-60 min).
- Alarms panel is available.
- SIR-A 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 post-fault cycles.
> 25 records in data and COMTRADE format (60 cycles each record): 1 to 8 pre-fault cycles + 52 to 59 post-fault cycles.
> 50 records in data and COMTRADE format (30 cycles each record): 1 to 8 pre-fault cycles + 22 to 29 post-fault cycles.
> 100 records in data and COMTRADE format (15 cycles each record): 1 to 8 pre-fault cycles + 7 to 14 post-fault cycles.)
- Each oscillographic record contains 10 analogue channels and up to 96 configurable digital channels. 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)
Protection Functions
ANSI CODE PROTECTIONS
50 Instantaneous phase overcurrent
67/51 Inverse Time Directional* Phase Overcurrent
50N Instantaneous calculated neutral overcurrent
50G Instantaneous measured neutral overcurrent
67N/51N Inverse Time Directional* Calculated Neutral Overcurrent
67G/51G Inverse Time Directional* Measured Neutral Overcurrent
67NI Directional isolated calculated neutral overcurrent
67GI Directional isolated measured neutral overcurrent
SOTF Switch On To Fault
46 Phase balance current protection
46BC Broken Conductor Detection
49 Thermal overload
49T External Trip
37 Instantaneous phase undercurrent
SHB Second Harmonic Blocking
59 Instantaneous phase overvoltage (Bus bar)
59N Instantaneous Calculated neutral overvoltage (Bus bar)
59-L Instantaneous phase overvoltage (Line)
59N-L Instantaneous Calculated neutral overvoltage (Line)
47 Phase Balance voltage protection (Bus bar)
47-L Phase Balance voltage protection (Line)
27 Instantaneous Phase undervoltage (Bus bar)
27-L Instantaneous phase undervoltage (Line)
27V1 Instantaneous Positive sequence undervoltage (Bus bar)
27V1-L Instantaneous Positive sequence undervoltage (Line)
32 Directional Overpower
81O/U Under/Overfrequency
81R Rate of change of Frequency (ROCOF)
78 Out of Step (Vector Shift)
CLP Cold Load pickup
79 AC Reclosing device
SCM Sequence Coordination Mode
SZM Sectionalizer Mode
52 Breaker wear monitoring
25 Synchro Check
HLT Hot Line Tag
50BF Circuit Breaker Failure
74TCS Trip Circuit Supervision
60CTS Phase CT Supervision
60VTS Phase LPVT Supervision
86 Trip 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