idea™ iTP - Line Distance Protection System

The Edison idea iTP is a substation IED (Intelligent Electronic Device) designed for Transmission Protection, Monitoring, and Control.

PROTECTION FEATURES

The Edison idea iTP provides complete transmission protection. Functions available include:

• Four zones each of phase and ground distance protection; 3 forward and 1 reverse
• Zone 1 extension logic or 4th forward zone
• Directional phase, ground and negative-sequence overcurrent elements; instantaneous, definite time, and inverse time overcurrent
• Over/under voltage elements
• Multiple-Shot programmable reclosing
• Sync-check
• Out-of-step blocking logic
• Weak feed logic
• Breaker fail-to-trip and fail-to close detection
• Switch-onto-fault logic
• Communication aided tripping logic including POTT, PUTT, DCUB, DUTT, DTT, DCB, Forward Overreaching and Underreaching logic
• Loss of Load Accelerated tripping
• Load encroachment logic
• Fault location
• Fuse-Fail detection
• Eight setting groups

• Catalog Section 165-100  

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More Relay Information

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