Cable Fault Detector

In order to meet the rapid development of the power industry, HM-A50 is integrated traditional independent cable fault tester, high frequency and high voltage power supply, multiple pulse generator, path transmitter, insulation resistance tester into one device .

The system is used for the preliminary judgment, test and path searching of various kinds of power cable faults. The test software can automatically identify the card position and read the fault distance, which makes the cable fault test portable, simple, efficient and safe.Facilitate the rapid testing of power cable faults.

Hot tags :cable fault locator,cable fault distance locator, underground cable tester

w The system adopts an integrated design and it’s convenient and flexible to move.

w Suitable for testing all kinds of main insulation fault and outer sheath fault of 380V-220kV cable.

w Fault test, high voltage power supply, insulation resistance test, cable path test and other function are integrated in one device .

w The fault test unit adopts the industrial control embedded computer platform and Windows7 operating system.

w The high frequency and high voltage power supply unit adopts touch screen control system, which reflects man-machine interaction, convenient operation, simple and intuitive display.

w The insulation resistance testing unit is digital and the LCD can display the working status and test results of the instrument

w The CABLE path test unit LCD displays the transmitter, receiving signal frequency and signal strength.

w The system is equipped with 25m test lines to facilitate cable fault testing in far, near and complex environments.

1.. High voltage power supply unit

◆ Integrated design, built-in capacitance.

◆ Touch screen man-machine interaction, easy to set up and operate, instrument status display intuitive and convenient.

◆ With functions of voltage regulation, automatic voltage stabilization and automatic protection.

◆ The output high voltage has the function of single pulse and continuous pulse, which can cooperate with fault tester and fixed point instrument to find fault points respectively

◆ The output high voltage has DC output, which can work with the ball gap.

◆ The software controls the vacuum impact spark discharge, adaptive discharge and pulse cycle.

◆ With emergency stop key, automatic discharge function, emergency stop or stop automatic buck discharge, safe and reliable.

◆ The continuous working time no less than 6 hours, which can meet the longest working time of cable failure test.

2. Cable trace Unit

◆ The transmitter is highly integrated into the system.

◆ The receiver small size and light weight, easy to carry and track.

◆ Judge the cable path according to the sound of receiver speaker and the size of display signal intensity bar.

3. Insulation resistance test unit

◆ The unit is digital and LCD can display the working status and test result of the instrument.

◆ The instrument has power on self-check function and automatic calibration function.

◆ The instrument is fully displayed in English, and can automatically measure absorption ratio, polarization index and insulation resistance.

◆ Digital filtering technology is adopted with strong anti-interference ability.

◆ Adopt 2600mAh large capacity rechargeable lithium battery .

◆ With overload, automatic discharge, short circuit protection and other functions.

◆ Size：530(L)*430（W）*960（H）mm

◆ Weight：£50Kg

◆ Power supply：AC220V、50Hz

◆ Charging adapter ：DC12V、DC16.8V

1. Cable fault pre-locator unit

◆ It can test various faults of power cables with different voltage classes, different sections, different media and various materials under 35kV, including: open circuit, short circuit, low resistance, high resistance leakage, high resistance flashover faults.

◆ It can test various faults of railway communication control cable, street lamp cable and airport signal cable

◆ It can test the speed of radio wave propagation in any cable of known length.

◆ Display mode: 12.1-inch industrial LCD touch screen (Windows7 operating system).

◆ Test method: low voltage pulse method, lightning flow method, multiple pulse method

◆ Memory space：fixed 8G

◆ Test distance ：not less than 60km

◆ Operation mode：dual operation：touch pen and touch mouse

◆ Minimum test distance（blind zone）：0-5m or without blind zone

◆ Precise fix point error：±0.2m

◆ Test error：system error less than ±1%

◆ Multi pulse generator ：pulsevoltage≤40kV

◆ Standby time：continuous running 6 hours

◆ Temperature：-20℃～+40℃

◆ Relative humidity：≤80%

◆ Resolution：V/fm；V refer to pulse wave velocity：m/μs；software cursor 0.10m

◆ Sample frequency：3.125MHz 、6.25MHz、12.5MHz、25MHz、50MHz、100MHz、200MHz、250MHz。

◆ Pulse width：50ns、80ns、100ns、200 ns、1μs、2μs、5μs、10μs（automatic matching ）。

◆ Service mode and technology

A.4G wireless remote synchronous measurement and control service.
B.Waveform transfer by mail, real-time service by Android
C. Equipped with teaching video about how to operate cable fault locator .

2. High voltage power supply unit ：

This unit is mainly used for sample pulse discharge and precise pinpoint pulsewhen test medium and high resistance fault waveform for 35kV cable or below it . It can also be used for high resistance fault breakdown, and precise fault pinpoint for outer sheath of ultra HV cable above 110kV .

◆ Output mode：pulse output,DC output

◆ Output voltage：negative voltage，0～35kV continuous adjustable

◆ Working current：≤40mA

◆ Working mode：single pulse,continuous pulse,DC output

◆ Built in capacitor：4uF/35kv

◆ Discharge energy：≤2450J

◆ Pulse period：3s～8s self adaption

◆ Automatic discharge：Shut down , automatic discharge

◆ Power：power frequency 220V±10%

◆ Display screen：800×480 resolution, touch screen

◆ Working environment：temperature ：-10℃～40℃；Humidity：≤80%

◆ Altitude：≤1000米

3. Cable path tracer :

◆ Signal frequency：9.6KHz since wave

◆ Detecting distance：<15km

◆ Detecting depth：≤3m

◆ Error：<5cm

Transmitter：

◆ Output signal frequency：9.6kHz

◆ Output power：2W

Receiver：

◆ Input signal frequency：9.6kHz

◆ Error of detecting path：±2cm

◆ Error of detecting depth：±5cm

◆ Battery：9V ，continuous working 8 hours

4. Insulation resistance test unit

◆ Output voltage：500V、1000V、2500V、5000V。

◆ With absorption ratio, polarization index, fast test and automatic insulation test functions.

◆ Automatic discharge in fast speed.

◆ Protection of short circuit , over load, over current and under voltage.

◆ Turn off automatically if standby time reach 10 minutes .

◆ Working environment ：temperature：-10℃－40℃ relative humidity ：20%-90%RH

Altitude：<3000m

◆ Storage environment：temperature：-10℃－50℃；Humidity：<90%RH

◆ Power：adapter input：AC220V、50Hz，output：DC16.8V

5. Super mute intelligent fault pinpointer Unit

◆ Dynamic range of sensor:sound channel >104dB ,magnetic field channel>110 dB Frequency range：100 Hz---1500 Hz

◆ Amplification factor of impact discharge sound >90dB，冲击Impact discharge volume limit: 84dB(A),can be turned on or off

◆ Wave set：No filter 100 Hz---1500 Hz

◆ Low pass filtering：100Hz---400 Hz, band-pass filtering：150Hz---600 Hz, High-pass filtering：200Hz---1500 Hz

◆ LCD display：bright true color screen，pixel 320 x 240 ,suitable for outdoor .

◆ Alkaline replaceable battery convenient for file application.