China 10kv Output Voltage Cable Fault Locator Ehv Cable Fault Locator 100mA Output Current Cable Loc

Product Description
1.Introduction
FLD-66 EHV cable sheath fault locatoris used to locate the EHV cable sheath fault and it also could offer HV impulse signal source for the EHV cable sheath pinpointing.
It could pinpoint the cable sheath fault matched with deviceFLD-86 step voltagepin-pointer.
2.Design FeaturesAuto testing. Big LCD displays the distance directly. Easy operation and solute the difficulty of HV Bridge balance adjusting.Overcome with the effect to the result by the connecting resistance. High locating accuracy.Use core wire to locate the sheath fault. Overcome the HV bridge disadvantage that can't locating because lack of good insulation sheath in site.Built-in HV continuous current. Output voltage and current is continuously adjustable and long time short circuit is allowedGrounding lock and HV zero start and such safety protection functionBoth functions of locating and HV impulse signal source. Both for sheath fault locating and EHV cable sheath fault pinpointingHigh output current for sheath DC voltage withstand testAuto power off when under-voltage and long-time no-operationTechnical SpecificationOutput voltage0~10kV adjustableOutput current0~100mA adjustableMax. output range1kWAccuracyDeviation ≤0.1%Power supplyAC 220V,50Hz,6AVolume480mmx330mmx360mmWeight15 kgOperating Temperature-10ºC-40ºCHumidity10-90%RHElevation<4500m3.Physical Characteristics
3.1 Device appearance:
Refer below fig.1
Figure1.FLD-66 EHV cable sheath fault locator3.2 Panel introduction:
Introduction:
Fig.2 Panel introductionAC 220: insert 22V, 50Hz AC power. The power and power line should bear current above 6APower on/off: device on or offP: power light to indicate the device power, protect grounding and test grounding condition. Light bright when power on. Light flicker and automatically lock HV on function when device doesn't ground or bad groundHV: HV output indicator. Light bright when HV outputV display: display device output voltageVoltage adjustment: adjust device output voltage according the withstand voltage of tested cableZero: voltage adjustment Zero position indicate. only when the Voltage adjustment button on this position, the HV on function is workable.A display: display device output currentCurrent adjustment: adjust device output current according requirements.HV on: when start theFLD-66, no voltage output. When the Voltage adjustment button is Zero position, press HV on button to output voltage. When HV output, this button is bright and the HV brightHV off: stop HV output. It is bright when no HV outputFLD/Impulse: The this button up, the indicator is bright,FLD-66 work inFLDoutput mode. When this button down and bright,FLD-66 work in impulse output mode. This mode is used to do sheath fault pinpointing.This button is workable when device under HV on conditionLast step/next step//confirm/i: Device operation buttonLCD screen: display operation reminder, testing item, testing process, and test resultFault phase: Connect with fault cable sheath. Insert the pin with red clipAux. cable: connect good grounding-insulation cable sheath or core wire. Insert pin with green clipTest grounding: connect with grounding connector, insert pin with blank clip.Protect grounding: protect grounding of device. Before use device, grounding is must3.3 Junction box:
WhenFLD-66 works, we need ajunction box in the other end of cable. Panel is as below:
Fig.3junction box panelIntroduction:Fault phase: this output cable connects with red clips,corresponding with theFLD-66 Fault phase and connect with the fault cable sheathAux. wire: this output cable connects with green clip, corresponding with theFLD-66 aux. wire and connect with the cable sheath or cable core wire of auxiliary line or phaseTest grounding: This output cable connects with ablack clip and connect with the ground connector. Both clip and pliers are offered for convenience4.Operation method4.1Sheath fault distance locating4.1.1Prepare
If the insulation resistance of cable sheath-ground is huge, use theFLD-66 to burn the fault point first. Testing until the insulation resistance reduces to 100 KΩ will get more accuracy result.*Burn of cable point sheath refers below operation of DC Withstand voltage test.
FLD-66 EHV cable sheath fault locator need at least one grounding well cable sheath or cable core wire and their resistance-to-ground should be bigger than the resistance-to-ground of the fault sheath.
Before testing, use mega-ohm meter to test the sheath-to-ground insulation of all cable and we call it the 'fault phase'. Find the cable core wire or sheath with biggest insulation resistance (above 1000 times sheath resistance) and we call it auxiliary line. If both the core wire and sheath reach the requirements, the core wire is preferred.
For describe, below we adopt fault phase, auxiliary line to instead the cable core wire or sheath.4.1.2Wiring
There are several wiring methods as below, choose different methods according the site condition.
Use cable core as auxiliary lineIf there are well ground insulation core wire in test site could be used, it's priority selection to use it as auxiliary line. Diagram as below fig.4
Fig.4 cable core wire as aux. lineUse cable sheath as auxiliary lineIf no core wire could be used, the best ground insulation cable sheath could be used as aux. line. Wiring diagram as below:
Fig.5 cable sheath as aux. lineConnect the power line and HV output line ofFLD-66 EHV cable sheath fault locator. The red clip connects with the fault phase sheath, the green clip connects with the aux. line, and the black clip connects with unused cable core wire or cable sheath to ground. We suggest to grounding all other unused cable sheath and cable core. Grounding the protect ground ofFLD-66 and make it well grounding. And connect the grounding line with discharging rod.4.1.3Opposite end junction box wiring
Corresponding with wiring of sheath fault locator, the red clip should be connected with the fault sheath, the green clip should be contacted with aux. line and the unused cable sheath or core wire should be grounded by the black clip.4.1.4 Device grounding checking
Power on the device and the power indicator lights to show it is well grounding. If the power indicator flickers, it shows there is larger resistance of testing ground and protect ground. Then we should power on and check the protect ground and work ground. There are maybe oxide layer between clips and grounding connector. To solve it, we could rub the oxide layer when clip the connector tomake well connection.
4.1.5Sheath fault locating operation
When power on, the LCD screen willdisplaythe software version no. first and enter the prompt interface after 2seconds. If the DC/Impulse indicator flickers, we need to press this button to enter theFLDworking condition.Wiring prompt. Refer below diagram 6:Prepare: wiringWiring definition:
Aux. line: Which has largest groundinsulationNear-end locator wiring
Red clip--connect fault sheath
Green clip-connect aux. line
Black clip(testing ground)-grounding
Protect ground--groundingFar-end locator wiring
Red clip--connect fault sheath
Green clip-connect aux. line
Black clip(testing ground)-grounding
Please ground the two ends of the unused cable sheath and core wireConnect and check. Press Confirm buttonFig.6 wiring prompt
*Check whether the device wiring and the junction box wiring is same as the FLD prompt message.If correct, press Confirm button.System zero calibrationZero calibration interface as belowFirst step:System zero calibration
Output voltage:932.87mVSheath voltage drop:2μVOutput current:0.46μA/confirm/iunder the HV condition,
Press data stabilization, press Next Step buttonFig.7 system zero calibrationWhensystemSignal Filter zerMedical Diagnosis Equipment o calibration,theHV output should be closed. If didn't close the HV output, the device will auto test and has audio alarming. At the meantime, lock the Next step operation until close the HV output. Confirm the HV off indicator lights and press Next step button to begin system zero calibration. Interface as below fig. 8
First step:System zero calibration
Output voltage:932.87mVSheath voltage drop:2μVOutput current:0.46μA
Zeroing…please waiting
Fig.8 system zero calibration
When after system zero calibration,thedisplay interface as below fig. 9. Press Next step tocontinueand if want to zero calibrate again, press Last step button.
First step:System zero calibration
Output voltage:0 mVSheath voltage drop:0μVOutput current:0μAZero calibration finished
PressLast Stepto continue
PressNext Stepto zero calibrate againFig.9 system zero calibrationSheath resistance testing interfaceTesting interface as below fig.10
Second step:Sheath resistance testing
Output voltage:231.41 mVSheath voltage drop:-2 μVOutput current:0.31 μAHV zero setting: pressHV on
Adjust voltage, current and press Next step until data stabilizationFig.10 sheath resistance testingFirst turn the HV adjust button to Zero position, press HV ON button to start HV output. Adjust the HV adjustment and Current adjustment button to make the output under constant current state. The current value should be as large as possible.
When the current value is stabilization, pressing Next step to testthecable sheath resistance. Interface asbelowfig.11
Second step:Sheath resistance testingOutput voltage:3.2 mVSheath voltage drop:3.53 μVOutput current:80.35 μA
Testing…please waiting
Fig.11 sheath resistance testingAfter testing, it will display the resistance of total cable sheath. Interface as below fig.12
Second step:Sheath resistance testingOutput voltage:3.2 mVSheath voltage drop:3.54 μVOutput current:80.35 μAresistance of total cable sheath: 44mΩPress HV off, then press Confirm to continue
Press Last step to test againFig.12 sheath resistance testingIf want to test the resistance again, press Last step button.
Continueto test please first adjust HV adjustment to zero position, then press HV off button to close the HV output.
Device automatically tests the HV output state and if HV output, device will have audio alarming and lock next step operation.
When HV output close, press Confirm to continue.
Opposite terminal operation. Operation interface as below fig.13Operation tipsNotify the opposition terminal to pull out the
Testing ground plug of the junction box.
PressConfirm button
when above step finishedFig.13 operation tips*Accordingtheoperation tips, notify the staff to pull out the black clip from the junction box testing ground socket. After the staff in the opposition terminal /confirm/i, press Confirm button.
Faulty phase zero calibration.Zero setting interface as below fig.13
Third step: Faulty phase zero calibration
Output voltage:800.87 mVSheath voltage drop:3 μVOutput current:0.04 μAMake sure device underHV offstate
PressNext stepuntil data stabilizationFig.13Faulty phase zero calibrationWhen faulty phase zero calibration, it is needed to close the HV output. If not, the device will automatically test, make audio alarming and lock next step operation. Device will begin zero calibrate until close HV output.
Make sure the HV offindicatorlights and press Next step to begin zero calibration. Reference interface as below fig.14
Third step: Faulty phase zero calibrationOutput voltage:312.87 mVSheath voltage drop:4 μVOutput current:0.46 μA
Zero calibrationSpecialized Case & Box …please waiting
Fig.14Faulty phase zero calibrationAfter calibration, the interface is as below fig.15.
Third step: Faulty phase zero calibration
Output voltage:0 mVSheath voltage drop:0μVOutput current:0μAZero calibration finished
PressLast stepto continue
PressNext stepto zero calibrate againFig.15Faulty phase zero calibration
Near-end sheath resistance testing.Testing interface as below fig.16
Fourth step:Near-end sheath resistance testing
Output voltage:231.43 mVSheath voltage drop:-2 μVOutput current:0.31 μAVoltage zero calibration, pressHV ono
Adjust voltage and current, pressNext stepuntil data stabilizationFig.16Sheathfaultresistance testingSet Voltage adjustment button to Zero position, press HV on button and adjust Voltage adjustment& current adjustment button to constant current state to make the current value as large as possible.PressNext step to test the near-end sheath resistance until data stabilization. Interface as below fig. 17.
Fourth step:Near-end sheath resistance testingOutput voltage:10 mVSheath voltage drop:3.22 mVOutput current:86.23 mA
Testing…please waiting
After near-end sheath resistance testing, interface will displaythesheath resistance and grounding insulation resistance. Refer below fig.18
Fourth step:Near-end sheath resistance testingOutput voltage:10 mVSheath voltage drop:3.22 mVOutput current:86.23 mA
Near-end resistance: 37.34mΩ
Grounding insulation resistance: 0.115 mΩPressHV offto close the output, then pressNext stepto continue
PressLast stepto test againFig.18Sheathfaultresistance testing*According prompting, if want to test again please press Last step button.
Continue to test please first adjust the Voltage adjustment button to zero position then press HV off to close the HV output.
Device tests HV power state automatically. If doesn't close power, device will give audio alarming and lock the Next step operation. Press Next step to display testing result.Testing resultDisplay the sheath-grounding insulation resistance, the sheath length resistance, the testing end-to-fault point sheath resistance and the ratio ofdistanceof fault point-to-testing end to total cable. Interface as below fig.19
Testing resultSheath to ground insulation resistance:0.115 MΩSheath full length resistance:Sheath fault point to near-end resistance:37.34 MΩ
Fig.19testingresult
After testing, please turn off the power and full discharge to all the sheath by discharging rod. Then remove the device wiring and opposite wiring.*Attention:
If there is heavy interference, we suggest customer to testmultiple result and use the averaging value.
If there are several fault points inthecable sheath, the testing resistance will has deviation. The tested result is near the most serious faulty point. And if want to pinpoint, we need to enlarge the testing range.4.2Sheath fault pinpointing
FLD-66 has HV impulse output function which could be used in HV cable sheath fault pinpointing.5.2.1 Wiring when pinpointing, refer below fig.20
Fig.20pinpointingwiringTips:Connect the power line and HV output line ofFLD-66Red clip connects with the faulty sheathRemove the green clip lineConnect the black clip and ground clip with grounding connectorGrounding the Protect groundConnect the discharging rod with the Testing ground lineMake the opposite-end safety!
5.2.2 Grounding checking
Power on and the power indicator will light.This means device is well grounding. If the indicator flickers, it meansthe resistance between testing ground and protect ground is too large.Thenwe need to power off device and check again.5.2.2 HV power adjustment
Confirm the wiring is correSensor ct. After adopts safety precautions intheopposite-end, adjust the Voltage adjustment button to Zero position and press HV on button. Press Voltage adjustment and Current adjustment button to make the output current as large as possible. Press DC/Impulse button, the indicator of this button willflicker frequencyand device will output HV impulse to offer signal for the pinpointing.
5.2.3 Pinpointing
UseFLD-86 digitalstepvoltagepinpointingdeviceto test the accuracy fault point after pre-locating.
After testing, please power off the device and fully discharging the sheath by discharging rod. Then remove the device wiring line and collect.5.3.1 Wiring ofFLD-66 DC voltage withstand testing. Refer below fig. 21.
Fig.21 DC voltage withstand testing wiringTips:Connect the power line and HV output line ofFLD-66Red clip connects with the faulty sheathRemove the green clip lineConnect the black clip and ground clip with grounding connectorGrounding the Protect groundConnect the discharging rod with the Testing ground lineMake the opposite-end safety!
5.3.2 Grounding checking
Power on and the power indicator will light.This means device is well grounding. If the indicator flickers, it meansthe resistance between testing ground and protect ground is too large.Thenwe need to power off device and check again.5.3.3 Confirm correct wiring and adjust the Voltage adjustment button to Zero position and press HV on button.
Press Voltage adjustment and Current adjustment button to make the output current as large as possible. If the DC/Impulse indicator flickers, press this button to DC work state. Then adjust the Voltage adjustment buttonaccordingthe DC voltage withstand testing.5.Notify!!!
HV device! Operation according the manual. After use, fully discharging the cable to make sure safe.Don't disassembling device to avoid electric shock!!! There are HV stored energy storage unit in the device. Even device is power off, there are also possibility of electric shock!!!Contact with us if any device problem.Company introduction
1.certificationWe have passed ISO9001:2015,CE,SGS approval and IEC report
2.Company profile
Tianjin Grewin is concentrating on transformers for 20 Years and complianted by ISO9001:2015,CB,IEC CB,CE etc.We're always pay great attention to its business philosophy "Quality and Honesty First".Grewin is specialized in the design and manufacture of wound components such as transformer,current sensors, chokes etc .windely used in communications,electronics,meters,industrial control,medical equipments and other fields.We are also aprovider of power meters and instruments locators. 85% of its products exported to America, Europe, and Asia etc.We sincerely invite you to join us to create abright future.

3.Terms of Shipment:Within 10 working days after received related prepayment or L/C.4.Payment terms:
(1)T/T 100% or 50% deposit by T/T in advance, balance amount to be paid 7days before
delivery.
(2) By irrevocable L/C at sight, to be issued immediately against confirmed order.
(3)Payment by T/T, if order amount is less than USD 20,000.
5.Warranty:
(1)We provide 1year warranty.
(2)If the product is defective, please notify us within 3days of delivery.
(3)All products must be returned on their original condition, in order to qualify for arefund or exchange of goods6.Why choose us?Quality and honest first!
A. Flexible service for diffierent transformers with high efficiency performance.
B. Over 40 years experience of transformer designing and producing.
C.100% test of every single product we produce from incoming material checking.
D. UL, CE, ISO9001:2008
E. We offer custom-made transformers, OEM and ODM are welcome
F. We deliver the quality you expect at consistently competitive prices
G.Transformer quality lifetime:10 Years.
H.Specialty Sales service:5 -10 Years7.Flow chart of trading activities:

NO
Step
Days need
1
Request for quotation
1 day
2
Making quotations
1 day
3
Offer and counter offer
3 days
4
Sending and receiving samples
3-10 days
5
Sample /confirm/iation
3 days
6
Placing afirm order
1 day
7
Paying and receiving the down payment
1-4 day
8
Factory production &Quality inspection
15-20 days
9
Paying and receiving the balance
4 days
10
Delivery of goods
1 days

8.contactContact
Tianjin Grewin Technology Co.,Ltd.
Tel: 86-22-84943756
Mobile: 86-17694886127
Web:www.grewin-tech.com
Address: 2# MeiNian Plaza No.16 DongTing Road,Hexi Distr,300222,Tianjin China.