Edison Idea iTP-100 Line Distance Relay

Protective Functions

• Five Zones of Phase Distance (21P)
• Five Zones of Ground Distance, Mho or Selective Reactance (21G)
• Four Shots of Programmable Reclosing (79)
• High Speed Communication Aided Trip Schemes (POTT, DCB, DCUB, PUTT, DTT, etc.)
• Synchronism Check (25)
• Out of Step Tripping and Blocking
• Load Encroachment Supervision
• Five Levels of Definite Time Directional Overcurrent (67)
• One Level of Inverse Time Directional Overcurrent (67)
• Phase, Negative Sequence and Ground Overcurrent available at each level
• Breaker fail-to-trip and fail-to close
• Fuse Failure Protection
• Two Levels of Overvoltage Protection (59)
• Two Levels of Undervoltage Protection (27)