The Intelligent Multi-Pulse Cable Fault Tester is a high-performance device developed by our company to meet the needs of cable operation and maintenance in the field. It integrates the entire set of functions for cable fault testing and is designed to follow the development direction of the international power industry and cater to the rapid development of domestic power. We have independently developed an IoT-based cable fault testing service platform tailored to the characteristics of the cable fault testing industry, featuring high stability. The system integrates wireless communication technology, touch screen, rotary mouse technology, and expandable Bluetooth technology, significantly enhancing the functionality, utilization value, and convenience of on-site operations and services.

This comprehensive system complies with the general technical conditions specified in the Chinese electric power industry standards "DL/T849.1-2019 to DL/T849.3-2019" for specialized testing instruments of electrical equipment. The system consists of four parts: a system distance measuring host, a multi-pulse generator, a precision locator, and a cable path instrument. It is used for testing various faults in power cables, detecting cable paths, and measuring the depth at which cables are buried. The system covers precise testing of faults in power cables, railway and airport signal control cables, and street lighting cables.

The core technology of the multi-pulse method in the Intelligent Multi-Pulse Cable Fault Tester has revolutionized traditional testing methods. It effectively addresses the issue of waveform recognition for high-resistance faults, which was previously challenging. Using the multi-pulse generator, any complex high-resistance waveform can be transformed into a familiar and easily recognizable low-voltage pulse short-circuit fault waveform. This breakthrough solves the long-standing problem users faced in identifying complex high-resistance fault waveforms, significantly improving the crucial preliminary location phase of cable fault testing.

• 12.1-inch Large Screen with Rotary Mouse Control: High-brightness LCD display, suitable for outdoor use under sunlight. Powered by lithium batteries for convenient on-site testing. The engineering plastic casing is shockproof and moisture-resistant, providing excellent stability.

• Advanced Integrated Communication Technology: Ensures stable signal acquisition. The host can automatically select from six sampling frequencies ranging from a minimum of 6.25MHz to a maximum of 200MHz, with adaptive pulse width. This meets the testing requirements for cables of different lengths, reducing prediction errors and improving test accuracy.

• Software Features:

• Low Voltage Pulse and Waveform Automatic Identification Search: Automatically identifies and searches for waveform fault inflection points, automatically reads and displays fault distances.
• Three Zones Display on One Screen: Displays three zones of waveforms simultaneously, showing up to ten measured waveforms on the screen for selection.

• Automatic and Manual Processing Modes: Supports both automatic and manual processing modes, allowing for dual positioning operations on waveforms. Dual cursors can move precisely to within 0.15 meters, enhancing test accuracy and reducing waveform errors.

• Precision Locator: Directly displays digital synchronization of the distance changes between the test point and the fault point. It also detects the cable path direction during pinpointing, improving efficiency. Utilizes noise reduction filtering technology to facilitate quick and accurate cable fault detection, minimizing power outage losses.

• Integrated Path Detection: Signal reception and detection for path functions are integrated into the upper and lower units of the precision locator, making it convenient and efficient for on-site use.

(Note: Product characteristics mentioned may involve high-end configurations of the device. Actual features may vary based on the purchased configuration.)

Main Technical Specifications

(I) Distance Measurement Host Parameters

• High Integration, Low Power Consumption, Integrated Design: High stability.
• Cable Fault Testing: Capable of testing various faults in power cables up to 35kV, including open circuits, short circuits, low resistance, high resistance leakage, and high resistance flashover faults. Suitable for railway communication control cables, street lighting cables, and airport signal cables.
• Wave Propagation Speed Measurement: Can measure the propagation speed of electrical waves in any cable of known length.
• Display: 12.1-inch industrial-grade LCD screen (Linux operating system).
• Storage: 4GB electronic disk.
• Testing Methods: Low voltage pulse method, high voltage flashover method.
• Operation Method: Rotary mouse operation.
• Testing Distance: Not less than 50km.
• Minimum Testing Distance (Blind Zone): 5 meters.
• Precision Location Error: ±0.2m.
• Testing Error: System error less than ±1%.
• Resolution: v/(2f) meters; where v is the propagation speed (m/μs) and f is the sampling frequency (MHz).
• Sampling Frequencies: 400MHz, 200MHz, 100MHz, 50MHz, 25MHz, 12.5MHz, 6.25MHz, 3.125MHz.
• Pulse Width: 100ns, 200ns, 500ns, 1μs, 2μs, 5μs (software automatically matches).
• Power and Power Consumption: AC 220V±10%, no more than 15W; DC 12V (7AH), no more than 20W.
• Standby Time: Can be used continuously for about 6 hours.
• Weight: 7kg.
• Dimensions: 411mm × 321mm × 165mm.
• Temperature Range: -20℃ to +40℃; Relative Humidity: ≤80%.

(II) Multi-Pulse Generator Parameters

• Function: Cooperates with the cable fault distance meter to achieve automatic analysis of fault waveforms.
• Output Voltage: <40kV.

(III) Precision Locator Parameters

• Sensor Dynamic Range: Sound channel >104dB.
• Amplification Factor for Impact Discharge Sound: >90dB; upper limit of impact discharge sound volume 84dB(A).
• Display: High-brightness true color screen, resolution 320×240, suitable for outdoor use.
• Power Supply: Lithium-ion rechargeable battery.

(IV) Path Detector Parameters

• Detection Distance: <15km
• Detection Depth: ≤3m
• Routing Error: <20cm
• Transmitter:
  • Transmission Frequency: 9.6kHz
  • Output Power: 5W
• Receiver:
  • Reception Frequency: 9.6kHz.
  • Detection Routing Error: ±10cm.
• Detection Burial Depth Error: ±10cm.
• Power Supply: DC 24V, 3A power adapter.

(V) Test Equipment Parameters

• High Voltage Test Transformer Parameters:
  • Capacity: 5KVA.
  • Input Voltage: AC 200V, 50Hz.
  • Input Current: 25A.
  • Output Voltage: AC 50KV, DC 70KV.
  • Output Current: AC 100mA, DC 71.4mA.
• Control Box Main Parameters:
  • Capacity: 5KVA.
  • Input Voltage: AC 220V, 50Hz.
  • Input Current: 25A.
  • Output Voltage: 0～250V.
  • Output Current: 0～25A.