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110KV 3 Phase Voltage Indicator Location / Detection System For Overhead Line

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China Beijing Tianyihongda Science & Technology Development Co., LTD certification
China Beijing Tianyihongda Science & Technology Development Co., LTD certification
Super friendly service, the Power Line Fault Indicator high quality as expected and very economy and environmental protection.

—— Bruce

This is the first time i do Underground Cable Fault Indicator business , after i received , it is work well. and now i want to order more.

—— Joseph

110KV 3 Phase Voltage Indicator Location / Detection System For Overhead Line

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Large Image :  110KV 3 Phase Voltage Indicator Location / Detection System For Overhead Line Get Best Price

Product Details:

Place of Origin: Beijing,China
Brand Name: Tianyihongda
Certification: type test report
Model Number: TYHD-AI/110

Payment & Shipping Terms:

Minimum Order Quantity: 1set
Price: Negotiation
Packaging Details: 56*40*34cm,48 pcs /box ,standarad export box
Delivery Time: 3000 sets within 1 week
Payment Terms: Western Union, L/C, T/T
Supply Ability: 3000sets per week
Detailed Product Description
Connection Numbers For Gathering Units: 9 Pcs Of Gathering Units Installtion Mode: Hoop Fixation
Overhead Line: 110kV Alarm Flag: Turn Red
High Light:

cable fault indicator


high voltage indicators

TYHD-AI/110 OverheadLine Communicable Fault Indicator is applied to 110kV overhead line ,is a device to indicate line fault current. This system is composed of two parts, one is gathering unit and the other is collection unit.gathering unit monitors line running status real-time. When fault happened ,the gathering unit can quickly locate phase-phase short-circuit area,the fault line and fault point can be judged quickly and the meantime, the alarm flag turn red and appear flashlight and the fault signal also be transmitted to collection unit. After receiving signal from gathering unit, the collection unit send the received data to master monitoring station through wireless communication (GPRS/CDMA etc.)

The master station monitoring software analyze the received data and network topology, then to confirm the fault location and appear audible and visual alarm signal, in the meantime, the master station send the analyzed fault information to the operator’s cellphone and help them to find the fault point quickly, it reduces the power-off duration and improve the power supply reliability.

Principle instruction:

1.Application principle:

The fault indicator’s gathering unit uses gripping structure and coil to induct line current and electrical field signal, these signals are gathered and dealt with through low power consumption single-chip and finish the line load current calculation&short-circuit detection and realize short-distance wireless communication through inner-equipped wireless module with low power consumption,then send the signals to collection unit.

When gathering unit detects that the line current is corresponds to short-circuit characteristics, it immediately transmit the fault information to collection unit nearby through wireless module, in the meantime, alarm appears in means of red flag and flashlight, the collection unit receives every kind of signals then real-time transmit them to the master station monitoring platform through remote wireless communication, the master station will complete the data analysis and fault judgement.

Device application principle is as following diagram:

110KV 3 Phase Voltage Indicator Location / Detection System For Overhead Line 0

2.Fault detection principle:

TYHD-AI/110 overhead line remote transmission fault indicator is composed of gathering unit and collection unit. gathering units complete the judgement of short-circuit and local alarm;collection unit completes the fault signals and data transmission.

2.1)short-circuit detection principle:

Short-circuit detection adopts load current self-adaption intelligent sudden changes method.

According to the characteristics of short-circuit, it judges the fault through electromagnetic inductive method to detect the sudden changed current in line and sudden changed current duration,it is a kind of fault detection device which automatically adapts to load current changes and only related with short-circuit current component.The short-circuit detection principle is that the line current will change .


1.gathering unit introduction

1)fault indication:

1.1)short-circuit and earth fault indication: when short-circuit or earth fault happened,the gathering unit in the correspoding phase of the fault line area detects the fault and sends out the alarm indication.

1.2)fault alarm is transmitted remotely: the fault alarm information is outputted in the means of wireless communication.

2)intelligent reset:

2.1)permanent fault: automatically reset after power restore in a very short time
2.2)transient fault: automatically reset, the reset time can be configured as 4,8,12,24 hours before delivery.


3)Anti-misalarm for load wave: in the status of non-fault wave for line current, the gathering unit will not mis alarm the fault.
4)Automatically avoid switching-in rush current : when line is powering switch(or recloseing),the gathering unit installed this line can escape the rush current and not mis-alarm.
5)recloser minimum recognition time:

5.1)the gathering unit can recognize the transient fault with the recloser duration of 0.2 seconds and can alarm accurately.

5.2)The gathering unit installed in non-fault branch will not mis-alarm when sense recloser rush current after experiencing 0.2 seconds of recloser interval power outage.

6)Live install and uninstall

2. collection unit introduction

1)wireless receiving data

2)Remotely wireless public network sending

3)Support multi-power supply

4)flexible stand-by power supply equipped

5)communication is chooseable
6)remote upgrade
7)easy maintenance
8)Events record
9)Hearbeat can ne configured
10)Clock synchronization and timing

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 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.


Contact Details
Beijing Tianyihongda Science & Technology Development Co., LTD

Fax: 86-10-63330700

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