Payment & Shipping Terms:
|Optical Fiber Receive Signals:||By Optical Fiber Network||Power Supply Way:||Two Kinds Of Power Supply Method According To Actual Situation At Site|
|Analyze The Fault Signal:||Through Optical Fiber||Characteristic:||Communicate Real-time With Master Station By GPRS|
underground fault distance locator,
cable break tester
RTU cable type data transmission with earth fault indicator transmitted through optical fiber
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.
1 .Optical fiber receiving: receive signals of fault point and load current from indicators by optical fiber network
2. GSM or GPRS sending: send device status,line load current,indicator status and fault information to master station by GSM/GPRS and make sure the fault information can be transmitted reliably
3. Power supply:power supply method is flexible. PT supply or two road of CT supply, if primary current is above 10A,it can work normally.
4. communication protocol:IEC870－5－101 or IEC870－5－104 to transmit fault information or shift information.
5. Remotely upgrade:device can easily be upgraded remotely
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.|