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ABB REL 670 1MRK00008-KB ｜Line distance protection｜
REL 670 1MRK00008-KB
Core protection function
Distance protection (primary protection)
The four segment phase to phase distance and grounding distance serve as the main protection for line faults, instantly cutting off phase to phase and grounding short circuits.
backup protection
Zero sequence overcurrent, phase overcurrent, inverse time overcurrent, overload alarm, low voltage lockout overcurrent.
Identification of faulty components
Fault location, fault phase identification, fault waveform recording.
Measurement and control function
Remote sensing (current, voltage, power), remote signaling (switch position, pressure plate, alarm), remote control (circuit breaker opening and closing).
Accessibility
Logic for reclosing, low-frequency load shedding, overvoltage protection, and circuit breaker failure protection.
Communication and Interface
Support: IEC60870-5-103, IEC61850, Modbus, Profibus; Fiber optic/Ethernet networking docking with backend integrated automation system.
Input: Multi channel switch quantity acquisition; Open: trip, alarm, remote control outlet contact.
ABB REL 670 1MRK00008-KB ｜Line distance protection｜
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