Communicated Earth Leakage Indicator , Transmitted Reliably Copper Cable 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 site.in 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-C1 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.

Main technical performance and parameters:

working power: 3.6V/2Ah lithium battery is equipped for supply；

static power consumption:3.6V power supply＜15uA

measurement accuracy:0～180A:typical error±1.5A or±3％

long endurance current:500A

short endurance current:2000A/2S

optical fiber communication distance:15m

optical fiber data rate:9600bps

weight:<1.1kg

Install Size:

There is type test report for it, test items as following: