Feeder Protection and Recloser Controller SIPROTEC 7SC80

Feeder Protection and Recloser Controller SIPROTEC 7SC80

Product Overview

The SIPROTEC 7SC80 feeder protection can be used for protection and automation of medium voltage distribution feeders with grounded or low resistance grounded, isolated, or compensated neutral point. The 7SC80 features “flexible protection functions”. 20 additional protection functions can be created by the user. For example, a rate of change of frequency function or a reverse power function can be created. The relay provides circuit-breaker control.

Features :

Additional primary switching devices (grounding switches, transfer switches and isolating switches) can also be controlled from the relay. Automation or PLC logic functionality is also implemented in the device. The integrated programmable logic (CFC) allows the user to add own functions, e.g. for the automation of switchgear (including: interlocking, transfer and load shedding schemes). The user is also allowed to generate user-defined messages. The upgrade of device and communication firmware is also possible via Ethernet.

Functions :

Control functions/programmable logic

  • Commands for the ctrl. of CB, disconnect switches (isolators/isolating switches)
  • Control through keyboard, binary inputs, DIGSI 4 or SCADA system
  • User-defined PLC logic with CFC (e.g. interlocking)

Monitoring functions

  • Operational measured values V, I, f
  • Energy metering values Wp,Wq
  • Minimum and maximum values
  • Circuit-breaker wear monitoring
  • Fuse failure monitor
  • 8 oscillographic fault records
  • Trip circuit supervision

Communication interfaces


  • Ethernet electrical and optical (miltimode or single-mode)
  • IEC 61850 Edition 1 and 2
  • DNP3 TCP
  • IEC 60870-5-104
  • Ethernet redundancy protocols RSTP, PRP and HSR
  • USB front interface for DIGSI 4


  • 4 current transformers
  • 1/4 voltage transformers
  • 12 binary inputs
  • 8 binary outputs
  • 1 life contact
  • Pluggable current and voltage terminal blocks
  • Connection option for low-power current and voltage transformers

More Information


+66 2 063 5262-3, +66 83 440 1404