Features :

It is designed to provide differential and directional back-up protection for all voltage levels and types of networks. The relay features high speed and phase-selective short circuit measurement. The unit is thus suitable for single-phase and three-phase fault clearance.

Digital data communication for differential current measurement is effected via fiberoptic cables, networks or pilot wires connections, so that the line ends can be quite far apart. The serial protection interface (R2R interface) of the relay can flexibly be adapted to the requirements of all existing communication media. If the communication method is changed, flexible retrofitting of communication modules to the existing configuration is possible. Apart from the main protection function, i.e. the differential protection, the SIPROTEC 7SD610 has a full range of configurable emergency and / or back-up protection functions such as phase and earth overcurrent protection with directional elements if voltage transformers are connected. Overload, under and over-voltage/frequency and breaker failure protection round off the functional scope of the SIPROTEC 7SD610.

Hardware

• Binary inputs: 7
• Binary outpurs: 5
• Text display
• Surface-mounting or flush-mounting housing

Communication interfaces

• System port
  – IEC 61850– IEC 60870-5-103
  – PROFIBUS DP
  – DNP 3
  – Modbus
• Service port
  – DIGSI 4
  – Modem
• 1 serial protection data interface
• Front port
  – DIGSI 4
• Time synchronization via IRIG B, DCF 77 or system interface