SIL-A – Feeder Protection Relay
The SIL-A is an efficient Feeder Protection Relay with reliable Overcurrent and Earth fault Protection for Primary and Secondary Distribution, particularly suitable for MV switchgear.
Fanox has used the latest hardware technology to develop SIL-A, and it is available in several models according to customer requirements and installation needs. This solution is mainly indicated for installations such as wind farms o photovoltaic panels plants (Renewables).
SIL-A has a design that requires less equipment and space, reducing operating costs and maintenance. The optimal design makes the device’s useful life longer and enhanced safety by reducing hazards and saving installation time.
The SIL-A has the function of direct signaling/control of the circuit breaker (52 function) and the recloser (79 function), zone selection interlocking – ZSI (68 function) is available through configurable inputs and outputs thanks to the programmable logic (PGC). The Relay offers optional directional earth fault (isolated neutral included) and ground overvoltage protection. 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.
Intuitive for easy handling use, SIL-A has flexible communication options for rear (RS485 for serial and RJ45 for ethernet interface) and frontal port through a micro USB connector.
In terms of rear ports, SIL-A is able to manage multiple industrial protocols:
- DNP3 and Modbus (both serial or TCP versions)
All these combinations are selectable by model or general settings.
SIL-A has performed a complete set of type tests in Kema Laboratories (The Netherlands). This independent certification gives our customers higher quality and reliability assurance.