Fanox - Model 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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Features:
- 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).
- Many protection Functions: 50_1, 50N/G_1,50/51, 50/51N/G, 52, 46, 79, 74TCS, CLP (Cold Load Pickup), 86, 49T, 68 (Zone Selection Interlocking) and optionally 50_2, 50N/G_2, 50BF, 49, 74CT, 37, 46BC, TB (Trip Block) and SHB.
- 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)
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
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