Protection functions

• Under-/overvoltage protection (27/59)
• frequency protection (81U/O)
• Load restoration
• Overexcitation protection (24)
• Jump of voltage vector
• Synch-check (25)
• Lockout (86)

Control functions/programmable logic

• Commands for the control 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, f
• Minimum and maximum values
• Trip circuit supervision
• Fuse failure monitor
• 8 oscillographic fault records

Communication interfaces

• System/service interface
  • IEC 61850
  • IEC 60870-5-103
  • PROFIBUS-DP
  • DNP 3.0
  • MODBUS RTU
  • Ethernet redundancy protocols RSTP, PRP and HSR
• Ethernet interface for DIGSI 4
• USB front interface for DIGSI 4

Hardware

• 3 voltage transformers
• 3/7 binary inputs (thresholds configurable using software)
• 5/8 binary outputs (2 changeover)
• 1 life contact
• Pluggable terminal blocks