Advanced OC&EF Self-Powered Relay
The SIA-B provide the ultimate technology in application performance and protection. SIA B with Standard CT’s, is an overcurrent protection relay with self powered and dual powered (Self-powering + Auxiliary power) options.
Impeccably suited for protection and distribution systems, with minimal space requirement SIA-B compact relay provide a comprehensive range of functions in a amazingly compact and space-saving housing.
The real advantage is that the installation and subsequent maintenance of external batteries is eliminated. The innovative relay is self powered using the operating current through three /1 (<2VA) standard current transformers fitted on the lines. These transformers are also used to obtain current measurements. Besides, SIA-B Relay can be used with auxiliary power supply (24-230 Vac/dc). The operating costs of the centre are really reduced.
SIA-B is a dual powered (Self-Powered + Universal Vaux) relay offering a high performance previously available only in relays with Vaux:
Remote communications for SCADA (Modbus or DNP3.0 protocols).
Up to 10 COMTRADE records.
Completely configurable I/O thanks to advanced logic.
Very low start-up levels and minimum consumption <2 VA
Protect your installation with the highest precision thanks to oscillographic records plus extra events and fault records, requiring minimum current levels for the relay to start.