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Online Short Circuit Earth Fault Indicator Monitoring 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

Online Short Circuit Earth Fault Indicator Monitoring System For Overhead Line

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Product Details:

Place of Origin: Beijing,China
Brand Name: Tianyihongda
Certification: type test report
Model Number: TYHD-C3

Payment & Shipping Terms:

Minimum Order Quantity: 1set(3pcs)
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
Alarm: Red Flag Remote Signal Transmission: In-built Wireless Communication Module
Function: Solar Power Supply Feature: Remote Upgrade
High Light:

fault locator


underground electrical fault locator

This kind of device is applied to the overhead power distribution network automatic system from 6KV to 35KV,is used to improve the safe and reliable operating performance through centralized monitoring the current, temperature and fault condition on the power distribution circuit.

Data Terminal Unit:

It is composed of singlechip system, GPRS/GSM module, radio frequency communication module and solar energy supply unit. This device is installed on the pole 100m at most away from the indicators, is fixed by hoop directly. The function of DTU is to receive the signal from the detecting terminals(communicable indicators) and send the signals to the main station through GPRS/GSM. The size is height*width*height=300*200*120mm.

Each Data Terminal Unit can equip with many sets of 

communicable FCI within 100m.

This device is taking electricity from solar panel. In the daylight, the solar panel supply enough electricity for the device, and also, incharging to the storage battery at meantime. When in the night and cloudy day, it is powered by storage battery.

The Solar power supply is a device which makes use of a number of linked light-sensitive battery pack to turn the solar energy into electricity energy directly. Solar energy battery pack is a solid device which makes use of electronics characteristics of semiconductor materials to realize P-V transformation. It is a component which responses to light and can turn light energy into electric energy, adapts a kind of material named polycrystalline silicon which can generate photovoltaic high efficiency, its generating power principle is that type P of crystalline silicon is mixed with phosphorus then get Type N of crystalline silicon and form P-N combination. When the sun shines the solar panel, part of the photon is absorbed by the silicon, the energy of photon will be transmitted to silicon atom, which makes the electrons move and become to free electrons gathering both sides of P-N combination and form potential difference, then directly link to the storage battery in the Data Detecting Terminal and charging to the storage battery.

The device adopts 433M or 2.4G module which can receive and send in the meantime, is composed of wholly-integrated frequency modulator, a receiver with demodulation, a crystal oscillator and a regulator.

Online Short Circuit Earth Fault Indicator Monitoring System For Overhead Line 0

Technical Parameters and functions

●Communicable FCI parameters:

The alarming accuracy: 90% above

Line voltage: 6-35KV

Insulation and voltage resistance: 125KV

Current resistance capacity: 31.5KA/2S

Ambient temperature adaptable: -30℃~70℃

Visible distance of Alarming of red flag and flashlight at night: ≥300m

Red flag moving times:no limit( solar panel power supply)

Continuous flash time: ≥5000 hours

Flashlight intervals: ≤5s

Wireless communication distance: ≤100m

Weight: ≤550g

Battery life: 10 years above

Device life: 10 years above

Wind resistance capability: 150km/h not loosen

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

Send your inquiry directly to us