The SIPROTEC 7SA6 distance protection relay is a universal relay for protection, control and automation with a graphic display on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs.
High-speed tripping time
Impedance setting range allows very small settings for the protection of very short lines
Self-setting detection for power swing frequencies up to 7 Hz
Current transformer saturation detector prevents non-selective tripping by distance protection in the event of CT saturation.
Phase-segregated teleprotection for improved selectivity and availability
Digital relay-to-relay communication by means of an integrated serial protection data interface
Adaptive auto-reclosure (ADT)
The SIPROTEC 7SS52 numerical protection is a selective, reliable and fast protection for busbar faults and breaker failure in medium, high and extra-high voltage substations with various possible busbar configurations. […]
Arc fault protection is a relatively new technique employed for the fast clearance of arcing faults on Busbars & within metal clad switchgear & associated cable boxes.