SIL-A – OC&EF Line Protection Relays

The SIL-A is an overcurrent and earth fault protection relay for primary and secondary distribution with auxiliary power supply 24-220 Vdc/ 48-230 Vac.

The current measurement is obtained either by standard current transformers /1 or /5, or by special Low Power Current Transformers (LPCT).

SIL-A has also many smart protection functions: 50_1, 50N/G_1(1), 50/51, 50/51N/G(1), 50BF, 46, 52, 79, 74TCS, CLP (Cold Load Pickup), 86, 49T, 68 (Zone Selection Interlocking), 50_2, 50N/G_2, 49, 74CT, 37, 46BC, TB (trip block for switch disconnector) and SHB

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English / Data Sheet OC&EF Primary Distribution SIL-A
English / Data Sheet SIL-A (models A and D)_R01.pdf

SIL-A (B/C)

SIL-A (A/D)

Features

SIL-A Models B / C

The SIL-A is an overcurrent and earth fault protection relay for primary and secondary distribution with auxiliary power supply 24-220 Vdc/ 48-230 Vac. The current measurement is obtained either by standard current transformers / 1 or /5, or by special Low Power Current Transformers (LPCT).

Metalic box with high electromagnetic compatibility level (EMC) and wide range of operating temperature.
Direct signalling/control both of the circuit breaker (52 function), both of the recloser (79 function).
Zone selection interlocking (ZSI) function is available through configuarble inputs and outputs thanks to the programmable logic.
To allow the communication, relays have a communication port on the front of the equipment and remote communication with different options (ports and protocols) on the back:
- RS485 PORT: IEC60870-5-103, Modbus RTU or DNP3.0 Serial, selectable by model/settings.
- RJ45 PORT: IEC 61850, Modbus TCP/IP, DNP3.0 TCP/IP or IEC 60870-5-104, selectable by model/settings).
The SIL-A has configurable and dedicated inputs and inputs, depending on adaptation:
- Adaptation “B”: 6 configurable Digital Inputs and 4 configurable Digital Outputs.
- Adaptation “C”: 4 configurable Digital Inputs, 2 dedicated Digital Inputs and 4 Digital Outputs.
SIL-A is fitted with the demand of current (Load Data Profiling) with the following characterístics:
- Number of records: 168
- Recording mode circular
- Sampling rate (Interval): configurable through communications (1-60 min)

SIL-A Models A / D

The SIL-A is a feeder relay with overcurrent and earth fault protections 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 wide range of operating temperature.
Direct signalling/control of the circuit breaker (52 function) and the recloser (79 function).
Zone selection interlocking – ZSI (68 function) is available throug 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 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 6 conﬁgurable inputs and 6 conﬁgurable outputs.
SIL-A is ﬁtted with the demand of current (Load Data Proﬁling) with the following characteristics:
- Number of records: 168
- 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 3.072 events and disturbance fault recording (DFR – 25 fault reports and 25 oscillographic records in COMTRADE format), maintaining date & time thanks to its internal RTC (real Time Clock).
The oscillography is downloaded by communications port. The SICom communications program allows the oscillograghy record to be downloaded and saved in COMTRADE format (IEEE C37.111-1991).

Protection Functions

50 Phase instantaneous overcurrent

50N Calculated instantaneous neutral overcurrent

50/51 Inverse time phase overcurrent

50/51N Calculated Inverse time neutral overcurrent

50G Measured instantaneous neutral overcurrent

50/51G Measured inverse time neutral overcurrent

S0FT Switch on to fault

49 Thermal image

46 Negative sequence instantaneous overcurrent

46BC Broken conductor detection

37 Instantaneous phase underccurrent

74TCS Trip circuit supervision

50BF Circuit Breaker opening fault

SHB Second harmonic block

52 Circuit Breaker monitoring

79 Autorecloser

74CT Phase CT supervision

CLP Cold Load Pick-up

86 Trip output lockout with PLC

68 Zone Selection Interlocking

TB Trip Block for switch disconnector

PGC Programmable logic control

49T Trip output

Documents

Software

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.

Application

Comparison Table

SIL RANGE	SIL-D	SIL-A	SIL-B	SIL-G	SIL-V	SIL G NEW
Type	OC & EF FOR PRIMARY DISTRIBUTION	OC & EF FOR PRIMARY DISTRIBUTION	FEEDER PROTECTION	GENERATOR PROTECTION	GENERATOR PROTECTION	GENERATOR PROTECTION
Auxiliary Supply	24-220 Vdc/48-230 Vac	24-220 Vdc/48-230 Vac	24–48Vdc 90-300Vdc/110-230Vac	24–48Vdc 90-300Vdc/110-230Vac	24-220 Vdc/48-230 Vac	24-220 Vdc/48-230 Vac Self-powered through the VTs
Consumption	3,3 – 4,5 W	3,3 – 4,5 W	3,3 – 5,5 W	3,3 – 5,5 W	3,3 – 5,5 W
Current measurement	Standard CT 0,5VA	Standard CT 0,5VA	Standard CT 0,5VA	Standard CT 0,5VA		Standard CT 0,5VA
LPCT		√
Voltage measurement			VT	VT	VT or directly from the line	Directly to low power line
VT connection type					Adjustable	Adjustable
50	2	2	2	2		2
50N/G	2	2	2	2		2
50/51	1	1
50/51N/G		1
67NI	2
50/51/67N	2		2	2		2
50/51/67			2	2		2
52	1	1	1	1	1	1
BF	1	1	1	1	1	1
49		1	1	1		1
49T	1	1	1	1		1
79	1	1	1	1	1	1
46		1	1	1		1
CLP	1	1	1	1		1
74TCS	1	1	1	1	1	1
Trip Block	1	1
68 (Trip Bus)		1
86	√	√	√	√	√	√
46BC		√
74CT						1
Programmable Logic	V3	V3	V1	V1	V3	V3
37		1	2	2		1
59			2	2	2	2
59N			2	2	2	2
47					1	1
27			2	2	2	2
27V1					1	1
32/40			4	4		4
81U/O			4	4	4	4
25			1	1	1	Optional
81R				4	2	4
78				2	1	1
IRIG-B			√	√		Optional
Counters	√	√	√	√	√	√
Commands	√	√	√	√	√	√
Sett. Group	4	4	3	3	3	4
Inputs	6	6	8	8	6	8 / 16 / 8 + 4 AFD
Outputs	2 NO + 2 NC – NO	2 NO + 2 NC – NO	2 NC – NO + 5 NO	2 NC – NO + 5 NO	2 NO + 2 NC – NO	7 / 11 / 7 + 4 HS-O
LEDs	8 configurable	8 configurable	6 configurable	6 configurable	8 configurable	8 configurable + 3 non-configurable
HMI	20X2 LCD + 7 keys	20X2 LCD + 7 keys	20X2 LCD + 7 keys	20X2 LCD + 7 keys	20X2 LCD + 7 keys	20X4 LCD + 13 keys
52 & 79 HMI	2 led’s + 3 keys	2 led’s + 3 keys	2 led’s + 3 keys	2 led’s + 3 keys	2 led’s + 3 keys	2 led’s + 4 keys
Event	200	200	1000	1000	200	2048
Fault Report	20	20	20	20	20	100
Oscillography	5 records x 100 cycles	5 records x 100 cycles	2 records x 138 cycles	2 records x 138 cycles	5 records x 88 cycles	100 records x 1500 cycles
Current demand		√
Local Port (frontal)	RS232	RS232	USB	USB	RS232	USB
Remote Port (rear)	RS485 or Ethernet	RS485 or Ethernet	RS485 + RS485 Ethernet + RS485	RS485 + RS485 Ethernet + RS485	RS485 or Ethernet	RS485 or Ethernet or Fiber Optic
Communications Protocols	ModBus RTU IEC60870-5-103 IEC60870-5-104 DNP3.0 (TCP/IP) IEC61850	ModBus RTU IEC60870-5-103 IEC60870-5-104 DNP3.0 (TCP/IP) IEC61850	ModBus RTU IEC60870-5-103 IEC60870-5-104 DNP3.0 (TCP/IP) IEC61850	ModBus RTU IEC60870-5-103 IEC60870-5-104 DNP3.0 (TCP/IP) IEC61850	ModBus RTU IEC60870-5-103 IEC60870-5-104 DNP3.0 (TCP/IP) IEC61850	Modbus RTU DNP3.0 Serial IEC 60870-5-103 Modbus TCP/IP DNP3.0 TCP/IP IEC 61850
Size of	177 x 107 mm	177 x 107 mm	241,31 x 177,80 mm	241,31 x 177,80 mm	177 x 107 mm	198 x 198 mm

SIL-A – OC&EF Line Protection Relays

SIL-A (B/C)