Multifunction protection

The relay provides control of the circuit-breaker and automation functions. The integrated programmable logic (CFC) allows the user to implement their own functions, e. g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages. 

The flexible communication interfaces are open for modern communication architectures with control systems.

Hardware

• 4 current transformers

• 3/4 voltage transformers

• 8/11 binary inputs

• 8/6 output relays

• Text display or graphical display
• Surface-mounting or flush-mounting housing

Communication interfaces

• System port 
  – IEC 61850
  

  – PROFINET

  – DNP3 TCP

  – IEC 60870-5-103 
  – PROFIBUS-DP 
  – DNP 3.0

  – MODBUS RTU

• Service port

  – DIGSI 4

  – Modem

  – Thermobox

• Front port

  – DIGSI 4

• Time synchronization via IRIG B, DCF77 or system interface

Protection functions

• Overcurrent protection (definite-time/inverse-time/user-def.)

• Directional overcurrent protection (definite-time/inverse-time/user-def.)

• Sensitive dir. earth-fault detection

• Displacement voltage

• Intermittent earth-fault protection

• Directional intermittent ground fault protection

• High-impedance restricted earth fault

• Inrush restraint

• Motor protection

• Overload protection

• Temperature monitoring

• Under-/overvoltage protection

• Under-/overfrequency protection

• Rate-of-frequency-change protection

• Power protection (e.g. reverse, factor)

• Undervoltage controlled reactive power protection

• Breaker failure protection

• Negative-sequence protection

• Phase-sequence monitoring

• Synchro-check

• Auto-reclosure

• Fault locator

• Lockout

Control functions/programmable logic

• Commands for control of a circuit-breaker and of isolators

• Position of switching elements is shown on the graphic display

• Control via keyboard, binary inputs, DIGSI 4 or SCADA system

• User-defined logic with CFC (e.g. interlocking)

Monitoring functions

• Operational measured values V,l,f

• Energy metering values Wp,Wq

• Circuit-breaker wear monitoring

• Slave pointer

• Trip circuit supervision

• Fuse failure monitor

• 8 oscillographic fault records

• Motor Statistics