Wuhan Wugao Electric Measurement Co., Ltd

WD-A30 full intelligent multiple pulse cable fault tester

The biggest feature of WD-A30 all-intelligent multi-pulse cable fault tester is it avoids 90% of the complex high-resistance fault waveforms that are difficult to read. The test software automatically identifies the card position and reads the fault distance, especially for the increasing number of buried cables.


The system test consists of system host, multiple pulse generator, fault locator and cable pathfinder, which is used for testing various faults of power cable, cable path and cable buried depth. As well as railway airport signal control cable and street lamp cable fault accurate test.

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Product Details

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◆It can test various faults of power cables with different voltage levels, different cross-sections, different media and various materials below 35KV, including: open circuit, short circuit, low resistance, high resistance leakage, and high resistance flashover faults.

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

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

◆It can test the buried path and buried depth of power cables

Display mode: 12.1-inch industrial-grade LCD screen (XP operating platform)

Test distance: not less than 60km

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

Test methods: low voltage pulse method, flash current method, multiple pulse method

Storage space: fixed 8G

Shortest test distance (blind zone): 0-5 meters or no blind zone

Resolution: V/fm; V is the wave speed m/μs; software cursor 0.10 meters

Accurate positioning error: ±0.2m

Test error: systematic error less than ±1%

Instrument sampling frequency: 6.25MHz, 12.5MHz, 25MHz, 50MHz, 100MHz

Pulse width: 80 ns, 100 ns, 200 ns, 1 μs, 2 μs (automatic matching by software)

Standby time: about 6 hours of continuous use

Host weight: 7kg

Dimensions: 180mm×300mm×400mm

Ambient temperature: -20℃~﹢40℃, relative humidity: 80%

Power and power consumption: AC 220V±10% not more than 15W DC 12V (7AH) not more than 20W

◆Path meter technical indicators:

Signal frequency: 15KHz sine wave Output power: Pomax≥100W Output impedance: Zo=Zc (cable characteristic resistivity)

Oscillation mode: intermittent Ambient temperature: -10℃+40℃ Relative humidity: RH≤85% (25℃)

Host weight: 9.8kg Dimensions: 180mm×300mm×400mm

◆Acoustic magnetic digital display synchronous fixed-point instrument technical indicators:

Digital display distance: maximum 500 meters, minimum 0.1 meters Coarse measurement error: less than 10%, fixed point error is zero Electromagnetic channel receiver sensitivity: <5μV

Electromagnetic channel gain: >110dB (300,000 times) Sound channel audio amplifier gain: <120dB (1 million times when the signal-to-noise ratio is 4:1) 50Hz power frequency rejection: >40dB (100 times) 

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Address:13 / F, Building 2, Hangang Science and Technology Industrial Park, Jintan Road, Wuhan, Hubei, China.