Digital Fault Indicator Monitoring System 

Product main function:
●  Monitoring of the short circuit fault and earth fault, over-current, off line, and so on.
●  Monitoring line load current, and display the current level on mobile phone APP, Email, save the data on the web cloud, change curve on the system center.
●  Can be used as power supply circuit maintenance intelligent inspection system, monitoring maintenance personnel whether to inspection the power line on time.
●  The hardware and software with functions of bidirectional transmission, that can view the latest data on mobile phone APP and computer terminals.
●  Monitoring the power line other parameters, according to customer's requirements.  
●  Remote sensing (remote sensing information), remote measurement, acquisition and transfer operation parameters, Including all kinds of electric parameters (on line current, frequency, etc ) and load current, etc.
●  Remote communication (remote communication information), remote signal, When the fault occurs, collect and transmit the current status information back to system center for confirmation state.

Fault Indicator status display :

Normal status:
The red flags behind the white card, Type JDG with LED off

Fault status:
Show the red flags, Type JDG with LED flash in night time.
Visibility range: 360° 
Day time: 50 m , Night time: 300 m

Fault Finding Method:

When a short circuit or earth fault occurs on the line, the fault current flowing through the fault indicator that installed on the line will turn red flag or red LED flash. However, the fault indicator at the non-faulty line, non-faulty branch and after fault point do not operate.

Short circuit fault detection:
1. IL≥20A
2. IF≥130A
3. T1≥20S
4. 0.02S≤T2≤3S
5.  T3≥60S      

Earth-fault detection:
Uz － Line voltage≥3kV
IL－ Loading current≥20A
△IZ － Mutation current of the first 
half wave peak≥30A
△Uz － Earth fault phase voltage drop ratio≥30%
T1 － Normal operation time of the line≥30S
T2 － The fault duration≥1ms
T3 － Earth fault phase voltage continue drop duration before power outage≥60S       

Used to judge the short circuit fault indicator diagram:
As line 2# B phase 2,5,8 indicator and line 2# C phase 3,6,9 indicator turn red, but the 11,12 indicator still show white, that judged the point D happen short circuit

Used to judge the earth fault indicator diagram:
As line 2# C phase 3,6,9 indicator turn red,but the 12 indicator still show white, that judged the point D happen earth fault.

Clamp Joint Type Fault indicator installing guide

ATTENTION: Be careful of falling off,If failed repeat from 1 step. 

1.Put the indicator into the installing cup, (Installing cup fixed with hot stick.)

2.Fix the spring by hook in the installing cup. Make sure two spring all fixed by hook of two side.

3.Raise up the installing cup with indicator by hot stick and upward force quickly to the cable.

4.Pull down the hot stick with installing cup, the indicator would be fixed on the cable. 

Clamp Joint Type Fault indicator uninstalling  guide

ATTENTION: This type fault indicator can live line installation and uninstallation.

1.Fixed the installing cup on the hot stick, Turn the screw on the both side of the installing cup. Make the PVC sheet upspring.

2.Aim to the uninstalling indicator, then upward force, until the PVC sheet lock the indicator.

3.Pull down the hot stick slowly until the indicator is separated from the cable.

4.Pull the screw on the both side of the installing cup. Make the PVC sheet retract, take out the fault indicator.

Pull Rod Type Fault indicator installing guide

ATTENTION: This type fault indicator can live line installation but must power off when uninstallation.

1.Put the indicator into the installing cup  (Installing cup fixed with hot stick.)

2.Pull the rod to make sure the rod fixed on the side. 

3.Push the indicator up hard against the cable.

4.Pull down the hot stick with installing cup, the indicator would be fixed on the cable.