Railway self closing through lines are mostly laid in a combination of overhead and cable laying methods, using a neutral point ungrounded system, single-phase grounding without tripping, long-term operation, and many line defects. The railway self closing through line monitoring device monitors the fault frequency and traveling wave signals generated by line faults in real time, achieving precise positioning of fault points and identification of fault causes, effectively solving single-phase grounding faults and distinguishing whether faults occur in cable sections or overhead sections.
l Main technical indicators
Fault interval positioning accuracy: ≥ 99%
Fault precise positioning error: 200 meters
Fault cause identification accuracy: ≥ 90%
Working power supply: coupled power supply+solar power supply
l Applicable scope
Suitable for railway 10kV self closing through overhead lines, cable lines, mixed overhead cable racks, T-junction lines, etc.
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