Fault Passage Indicator is installed on the overhead power lines, is to detect the grounded and short circuit fault for overhead line. It will alarm during the day and flash during night to show the fault. According to the alarm information , the operator can locate the fault area quickly and find out the point of fault, which supply the best solution for the difficulty in finding fault area. This device can improve work efficiency, reduce power outage time and power restoration quickly.The installation and uninstalling way is very simple and convenient.
The parameters can be modified by client's requirement. default paramters is as following:
voltage applicable: 6kV-110KV
long withstand current: 630A
Power distribution frequency: 50HZ/60HZ
protection grade: IP68
line diameter applicable: 16mm2≤d≤400mm2
load current measurement range: 25A-630A, variable within 10s, line load minimum lasting time is 10s.
Earthed alarm value: 45A, can be adjustable before delivery.
Short-circuit alarm value: 120-150-220-320-400-900A, sudden changed value is self-adaptable. (can be customized by client before delivery)
Fault recognition time: 40ms-10s
Fault shock lasting time (surge suppression time) : 10s
Alarm response time: 0.02S≤T≤3S
Static power consumption: ≤20μA
reset time: 6,12,24,48 hours,can be defined by client oneself before delivery..
Ambient temperature: -40℃≤T≤+75℃
Alarm times: ≥2000 times
Led flash total hours: 10000 hours
Led Flash period for permanent fault: one flash every three second(can be customized by client before delivery,red flag is available if required)
Led Flash period for transient fault:two flash every forty(twelve) second (can be customized by client before delivery, red flag is available if required)
Visible angel: 360 degrees, 40 Lumens.
Battery life: 10 years, not changeable.
weight: ≤500g
Humidity: ≤95%
Size:74mm*112.5mm
applied range
Installed middle section and branch entrance on long line: can indicate line fault section and fault branch.
installed at substation exit:Can judge the fault is happened inside or outside the station .
installed user distribution and transformation high voltage line entrance:can judge if the fault is caused by users.
installed in the connection point between cable and overhead line:can judge if the fault happened in cable section.
There is type test report for it, test items as following:
Type Test Items
1. appearance and structure 2.function 3. electrical device performance 4.low temperature performance 5.high temperature performance 6.alternating temperature humidity7.vibrationendurance 8.incline drop test 9. electrical device life 10. static electricity and elecro-discharge immunity test 11.radio frequency electromagnetic field radiated immunity test 12.surge impact immunity test 13. power frequency magnetic field immunity test. 14. Adjacent interference test 15.short-circuit withstand impact test 16. fire hazard test 17. power consumption test 18. protection grade test 19. gripping strength test of grip structure.
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