This product has the characteristics of reliable action principle, sensitive response, and strong ability to withstand transition resistance such as arc. After testing in the Kaipu laboratory and real fault testing in the State Grid distribution network experimental base, the line selection is sensitive, fast, and the accuracy reaches 100%. It is an effective technical means for rapid disposal of single-phase grounding faults in urban cable distribution systems, overhead line distribution systems, and cable overhead line hybrid distribution systems.

High accuracy in line selecting  

Strong adaptability to high resistance

Meet the requirements for rapid removal of cable faults

Simple structure, meeting the needs of quick layout

Main technical parameters:

Minimum working condition: current 0.1A

Maximum capacitance current ratio: 50%

Total harmonic voltage distortion coefficient during single-phase grounding: 1.0% to 6.0%

Trip output trip setting delay: 0.5S~10S

Trip outlet capacity: closed AC/DC220V/2A, open

AC/DC220V/30W (time constant 40ms)