Payment & Shipping Terms:
|Characteristic:||GPRS Real-time Communication||Eight Roads Of Remote Fault Indication:||Displayed At The Same Time|
|Power Supply Way:||Two Kinds Method According To Actual Situation At Site||Function:||Real-time Detect Zero-sequence Current|
underground electrical 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.
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 .
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
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 11.radio 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.|