Battery Changed Fault Passage Indicator 6kV - 110KV Voltage Red Flag / Flashlight Alarm

     TYHD-AI2 smart grounded and short circuit 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.                                                                                                                                                                 Short-circuit adopts method of load current self-adaption intelligent sudden changing way.                        

    When short circuit fault occurs in lines, the indicators will sense the fault current and the display window of fault passage indicator will turn from white into red (or from normal to flashlight).

    Short-circuit adopts method of load current self-adaption intelligent sudden changing way. According to the characteristics of short-circuit, the indicator detects sudden changing current and its lasting time in line to judge fault through electro-magnetic induction way.

    The judgement principle for short-circuit is as following:

                                              Basic function

• fault indication: The window appears white when line running normally;when short-circuit and earth fault happen, the window will appear red and flashlight at meantime.
• running online.installed on overhead line directly,free-maintenance.
• Good adaptability: The accuracy of fault detection will not be affected by the load current changing value
• strong anti-disturbance capacity:Signal is not affected by line,magnetizing rush current,ultra-harmonics and current wave,especially the earthed capacitance current under condition of mixed lines
• intelligent reset:                                                                                                                          permanent fault:fault is cleared and power is restored, fault passage indicator will reset for short time；                                                                                                                   Transient fault:Line fault happened and tripped then re-close successfully, fault passage indicator will reset by setting time.             
• install and uninstall with power:can be installed and uninstalled when line is on power,not affect line running status.                                                                                                              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.