Sincerity Is Fundamental, Clients Is The First.


Strict Quality Control, Earnest Service Supply.

About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
Home ProductsEarth Fault Indicator

Optical Fiber Earth Fault Indicator Automatically Real-Time Detect Zero Sequence Current

I'm Online Chat Now
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

Optical Fiber Earth Fault Indicator Automatically Real-Time Detect Zero Sequence Current

small.img.alt small.img.alt

Large Image :  Optical Fiber Earth Fault Indicator Automatically Real-Time Detect Zero Sequence Current Get Best Price

Product Details:

Place of Origin: Beijing,China
Brand Name: Tianyihongda
Certification: type test report
Model Number: TYHD-A13

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
Send The Fault Signals: By GSM Or GPRS Analyze The Fault Signal: Through Optical Fiber
Function: Device Can Easily Be Upgraded Remotely Characteristic: Real-time Detect Zero-sequence Current
High Light:

earth leakage indicator


fault locator

Data transmission Unit is applied in power distribution network, used for data gathering and transmission for load detection ,fault detection and location in cable.

Working principle:

Date Transmission Unit is to make photoelectric translation,process and analyze the fault signal from short-circuit fault indicator and earth fault indicator transmitted through optical fiber.then send the fault signals to master station by GSM or GPRS after analysis and processing to realize fault detection,fault location and load current measurement of power distribution network .

Main characteristics:

1.GPRS real-time communication:

Communicate real-time with master station by GPRS. Client also can choose mode of timing online according to power supply condition at site or GPRS flow condition:

2.Eight roads of remote fault indication can be displayed at the same time

Equipped with cable fault indicators, with both function of remote fault indication and remote data measurement. 8 roads of cable information can be detected, and also, 8 roads of remote indication information can be displayed in LED at same time.

3.Power supply way:

There are two kinds of power supply method according to actual situation at site.

1) When there is AC power supply condition at site, use AC220V power supply and matched cable, connect device power interface to PT at this way, the device can work immediately after power restore.

2) powered by two roads of powered CT, back up used each other, if primary line current is not less than10A,device can work normally.

Note: when power supply at site is not normal.the super capacitor in the device supports the DTU running normally 30 minutes in real-time status to make sure fault information upload correctly.

TYHD-A13 cable earthed fault indicator is applied to cable system below 35KV, with function of zero-sequence current measurement and data transmit function, it indicates fault when earth fault happened in cable, It can help line finder find the fault quickly .shorten power-off time,improve the reliability of power supply,be convenient for users to monitor the zero-sequence load current of line on real time.

Functions and characteristics:

1)Install and uninstall simply.adaptable to detect zero-sequence current in three-phase cable with outer diameter below 110mm.

2)Epoxy resin casting,adaptable to run outside in a long term.

3)Real-time detect zero-sequence current.

4)detect earthed fault

5)optical fiber communication

6) Built-in a lithium battery, life is above 8 years

Device structure:

Optical Fiber Earth Fault Indicator Automatically Real-Time Detect Zero Sequence Current 0

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