Introduction:  

LP-A10 CABLE FAULT LOCATOR integrated industrial embedded computer platform, Network Communications Service and USB communication system to improve the utilization of the device. Specially, the device has loaded a system for underground buried cable data save and meet the national standard of 《DL/T849.1～ DL/T849.3-2004》. The device consists 3 parts:  main system, fault locator and cable line tester. It is used for cable fault location, cable line and depth test and daily maintenance of cable data. It can also be used for signal cable fault location for railway station and airport.

Features

◆ We are the first company in China who use industrial embedded computer platform system into cable fault locator. Lithium-power supply affords the convenience of field tests.

◆ We are the first company in China who use 12.1 inch touch-screen and windows XP system.

◆ The device adopt USB communication interface. The host can select 5 sampling frequency automatically between 6.25 MHz to 100MHz for the cable of different length.

◆ The device can search the fault point and display the distance automatically, the movement of double cursor can be accurate to 0.15m. The waveform can be compressing or expanding freely. At the same time the system will display two waveforms randomly which is close to standard waveform for your reference.

◆ The device saves total 40G waveforms and on-site wiring diagrams for your reference.

◆ We developed smart modular sampler to replace the on-site wiring, the sampling is totally separated with high-voltage to ensure the safety of the operator.

We developed HP-G35 high frequency high voltage power supply (8.9Kg) to replace the testing transformer and operation box (65Kg).

Application

1.It can be used for test cable fault for different voltage levels, different sections and

  different medium, including open circuit, short circuit, low resistance, high resistance

  leakage, high resistance failure flashover.

2.It can be used for testing signal cable fault for railway station, airport.

3.It can be used for testing wave propagation speed of the cable which length is known.

4.It can be used for testing the cable route and depth.

Specification

1.Display mode: 12.1 inch LCD (Windows XP)   

2.Memory mode: Fixed and movable 20G/2G

3.Test methods: Low-voltage pulse method, impulse flash-over circuit method, flashover

  voltage method
4.Test distance: no less than 40km

5.The shortest testing distance (blind zone):5-10m

6.Location error: ±0.2m 

7.Testing error: less than ±1%

8.Sampling frequency: 6.25MHz、10MHz、25MHz、50MHz、100MHz、(self-adaption)    
9.Power: AC 220V±10% DC 12V（7AH）

10.Maximum power endurance: 4 hours

11.Signal frequency: 15KHz sine wave

12.Output power: Pomax≥100W

13.Output impedence: Zo=Zc

14.Vibration mode: incontinuous

15.Host Weight: 9.8Kg

16.Ambient temperature: －10℃～＋40℃

17.Overall dimension: 180mm×300mm×400mm 

18.Relative humidity: RH≤85%（25℃）

Description of main composition

A.Host

1. Power Input: AC220V, 50Hz

2. Indicator

 1) Charging Indicator: 2-color diode, red light when charging; green light after  

   full of charging. Full battery will take about 12 hours.

 2) Undervoltage Indicator: Red diode, red light when undervoltage, while it

   sends alarm.

 3) Inpulse Indicator: Green diodes, green light when power on. Impulse test

   method during working.

 4) Flashover Indicator: Red diode, flashover test method during working, the

   red light if clicking the key of "specimen".

3. Output: Instrument uses BNC-50KY (Q9) socket, it sends signal output for

   testing cable fault.

4. Output amplitude: it is used to regulating the input/output of impulse

   amplitude

5. Program switch: It starts the system into the working interface after turning

   it on. please do according to hints of Windows XP system if shutdown. Never trying to turn off the instrument to ensure normal operation procedure.

6. Display: 12.1' LCD

7. Reset: this button is used to refresh board procedures testing. Press this

   key after each reboot, the pulse light blinks off once, test procedures enters

   the working state.

8. USB

9. Touch mouse: it can operate the entire system like general laptop mouse.

B. Locater

1.Lo is used for testing the faults of buried cable fast and precisely, meanwhile, it can be used for detecting the buried path and depth of a cable.

2.Panel of Locater

1) Distance display screen

2) Location/path

3) Earphone socket

4) Volume button  

5) Under-voltage   

6) Magnetic device head

3. Parameter:

1) Digital display distance：Max. 500m，Min. 0.1m

2) The sketch test error is less than 10%，location error is zero.

3) Electromagnetic channel gain is more than 110dB (300,000 times).

4) The sensitivity of electromagnetic channel receiver is less than <5μV.

5) Sounding channel audio amplifier gain is less than 120dB (When the ratio of signal-to-noise is 4:1, the audio signal will be amplified 1 million times.

6) 50Hz power frequency restrain degree is more than 40dB (100 times).

7) Scoustoelectric synchro-display and monitor：In actual location operation, digital screen will count repeatedly under the influence of the electromagnetic wave and show the distance of the fault, the maximum distance reading is 500m. Meanwhile, the hi-resistance earphone will monitor the seismic wave produced by the spark arising from the fault-spot been punctured to get rid of the interference of the clutter wave.

8) If you change the sound wave probe to 15KHz electric sensing probe, this device can also be used for testing the cable path and the buried depth precisely.

9) Power source：6V free from maintenance battery of 1.2AH.

10) Power loss： <120mA     (0.7W)

11) Operational environment： humidity 80% , temperature  -10℃—50℃

C.Tracer

1.The device is a main instrument in path-seeking, also combined with the location device, you can seek the buried path of the cable easily and precisely.

2.Panel

1)Indicator: it is used to indicate output power, when it is swing more, the more power output.

2)Q9 Block: The path analyzer signal output, connecting the cable cores.

3)The amplitude adjustment knob: adjusting or matching with  the instruments and  cable impedance.

Output power depends on pointer swing and earphone's voice.

4)Power input: AC 220V

5)Power switch: turn on the switch, indicator light means power connection is normal.

3. Parameter:

1) Output power: 30 watts under loaded resistance of 10 ohms, and continuously adjustable.

2) Operating frequency: 15KHz

3)Working mode: intermittent (repeated cycle of 1Hz / second), amplitude, amplitude modulation (modulation frequency 400-1000Hz), amplitude output is suitable for beating receiver; AM output  suitable for voltage multiplier direct discharge type detection receiver.

4) Automatic overheat/overload protection, it can keep working for at least eight hours.

5) Power supply: AC 220V ± 10%

6) Environmental conditions: Temperature -20-- +50 degrees Celsius, humidity is less than 95%

Assessories