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- Cable Fault Locator
- Battery Tester
0102030405
Huazheng HZ-A50 Pushcart Cable Fault Tester Trolley Type Cable Fault Location System
I. Advantages and Characteristics:
1. The system features an integrated design, making it easy to move and highly flexible.
2. Suitable for testing various types of main insulation faults in 380V to 220kV power cables.
3. Combines highly integrated fault testing, high-voltage power supply, insulation resistance testing, cable path testing, and other functions.
4. The fault testing unit utilizes an industrial embedded computer platform and a Linux operating system.
5. The high-frequency and high-voltage power supply unit employs an optoelectronic mouse control system, enhancing human-computer interaction for easy operation and a simple, intuitive display.
6. The insulation resistance testing unit is digital, and its LCD display shows the instrument’s working status and test results.
7. The LCD screen of the cable path testing unit displays the transmitter, received signal frequency, and signal strength.
8. The system comes with a 25-meter testing line, making it convenient for cable fault testing in remote, close-range, and complex environments.
II.Functional Characteristics:
1. Fault Testing Unit
1.1. It features a 12.1-inch large screen, controlled by a knob and mouse, with a bright LCD display that is suitable for outdoor use in sunlight. The distance measurement unit is powered by lithium batteries, making it convenient for on-site testing while providing strong stability.
1.2. Using the latest integrated communication technology, the collected signal remains stable. The host can automatically select six sampling frequencies, ranging from a minimum of 6.25 MHz to a maximum of 200 MHz. The adaptive pulse width can meet the testing requirements for cables of varying lengths, reduce prediction errors, and improve testing accuracy.
1.3. The software automatically recognizes and searches for low-voltage pulse and multiple pulse wave heads, positions waveform fault inflection points, and displays the fault distance. It can show waveforms in three distinct zones on the same screen and randomly display ten measured waveforms for selection. Additionally, it supports both automatic and manual processing modes, allowing dual positioning operation of waveforms. The dual cursor movement can be accurate to 0.15 meters, improving testing accuracy and reducing waveform errors.
1.4. Built-in measured waveforms and test physical wiring diagrams provide convenience for on-site testing comparisons and daily learning. The system can automatically generate and print test reports, which can be kept as cable operation and maintenance records.
2 .High-Frequency and High-Voltage Power Supply Unit
2.1. Integrated design with built-in capacitors.
2.2. Touchscreen human-machine interface for simple settings and intuitive, convenient instrument status display.
2.3. Features voltage regulation, automatic voltage adjustment, and automatic protection functions.
2.4. The output high voltage supports both single-pulse and continuous-pulse modes, and can be used with a fault tester and a fixed-point instrument to locate the fault point.
2.5. High-voltage output with DC capabilities, enabling use with external ball gaps and diverse applications.
2.6. Software-controlled vacuum impact ignition discharge, adaptive discharge, and pulse cycle.
2.7. Equipped with an emergency stop button and automatic discharge function. It can automatically reduce voltage and discharge during an emergency stop or shutdown, ensuring safety and reliability. The continuous working time is no less than 6 hours, meeting the longest operational time required for cable fault testing.
3 .Path Testing Unit
3.1. The transmitter is highly integrated within the system.
3.2. The receiver is compact and lightweight, making it easy to carry and track.
3.3. The cable path is determined based on the volume of the receiver's speaker sound and the signal strength displayed on the bars.
4. Insulation Resistance Testing Unit
4.1. The unit is digital, and the LCD display shows the instrument's working status and test results.
4.2. The instrument includes a power-on self-test function and an automatic calibration feature.
4.3. The instrument's sampling is displayed in full Chinese and can automatically measure the absorption ratio, polarization index, and insulation resistance.
4.4. It uses digital filtering technology with strong anti-interference capabilities.
4.5. Equipped with a 2600mAh high-capacity rechargeable lithium battery pack.
4.6. Includes overload, automatic discharge, and short-circuit protection functions.
III.Technical Parameters
1. Trolley Parameters
1.1. External dimensions: 530 (L) × 430 (W) × 960 (H) mm
1.2. Weight: 50 kg
1.3. Input power supply: AC 220V, 50Hz
1.4. Charging adapter: DC 12V, DC 16.8V
2. Fault Testing Unit
2.1. High integration, low power consumption, integrated design, and high stability.
2.2. Capable of testing various faults in power cables with different voltage levels, cross-sections, media, and materials up to 220 kV, including open circuit, short circuit, low resistance, high resistance leakage, and high resistance flashover faults.
2.3. Can also test various faults in railway communication control cables, street light cables, airport signal cables, and mining power cables.
2.4. Determines the speed of radio wave propagation in any cable with a known measurable length.
2.5. Display method: 12.1-inch industrial-grade LCD screen (Linux operating system).
2.6. Storage space: 4GB electronic disk.
2.7. Testing methods: Low voltage pulse method, lightning current method, multiple pulse method.
2.8. Operation method: Knob and mouse operation.
2.9. Testing distance: Not less than 50 km.
2.10. Minimum testing distance (blind spot): 5 meters.
2.11. Precision positioning error: ±0.2 meters.
2.12. Testing error: The system error is less than ±1%.
2.13. Multiple pulse generator: Impulse voltage ≤ 40 kV.
2.14. Resolution: v/f m; V is the wave propagation velocity in m/μs; Software cursor: 0.10 meters.
2.15. Sampling frequency: 200 MHz, 100 MHz, 50 MHz, 25 MHz, 12.5 MHz, 6.25 MHz.
2.16. Pulse width: 100 ns, 200 ns, 500 ns, 1 μs, 2 μs, 5 μs (software automatic matching).
2.17. Power supply and power consumption: AC 220V ±10%, not exceeding 15W; DC 12V (7Ah), not exceeding 20W.
Standby time: Can be used continuously for approximately 6 hours.
3. High-Frequency and High-Voltage Power Supply Unit
This product is primarily used for sampling impulse discharge of high-resistance fault waveforms during fault testing of power cables with voltages up to 32 kV, and for the precise determination of fault points during impulse discharge.
3.1. Output methods: Pulse output, DC output.
3.2. Output voltage: Negative pressure, ≤32 kV.
3.3. Working mode: Single pulse, continuous pulse, DC output.
3.4. Built-in capacitor: 4 μF / 32 kV.
3.5. Discharge energy: ≤ 2048 J.
3.6. Pulse period: Adaptive from 3s to 8s.
3.7. Automatic discharge: Automatically discharges upon shutdown.
3.8. Working power supply: Power frequency 220V ±10%.
3.9. Display screen: 800 × 480 resolution, touchscreen display.
4 .Path Testing Unit
4.1. Detection distance: 5 km.
4.2. Detection depth: 3 meters.
4.3. Routing error: 5 cm.
4.4 Basic Transmitter Parameters:
4.4.1. Output frequency: Transmission frequency 9.6 kHz.
4.4.2. Output power: 5 W.
4.4.3 Basic Receiver Parameters:
4.4.4. Input frequency: 9.6 kHz.
4.4.5. Detection routing error: ±2 cm.
4.4.6. Detection depth error: ±5 cm.
4.4.7. LCD display: High-brightness true color screen with 320 × 240 pixels, suitable for outdoor use.
5 Insulation Resistance Testing Unit
5.1. Output voltage: 500V, 1000V, 2500V, 5000V.
5.2. Features absorption ratio, polarization index, rapid testing, and automatic insulation testing.
5.3. Includes an automatic discharge function and a discharge speed block.
5.4. Protection functions: Short circuit, overload, and undervoltage/overcurrent battery protection.
5.5. Automatic shutdown when standby time reaches 10 minutes.
5.6. Power supply: Adapter input: AC 220V, 50Hz; output: DC 16.8V.
6 .Ultra-Quiet Intelligent Fixer Section
6.1. Sensor dynamic range: Sound channel > 104 dB, magnetic field channel > 110 dB. Sensor frequency range: 100 Hz – 1500 Hz.
6.2. Amplification factor of the impact discharge sound: > 90 dB; upper limit of the impact discharge volume: 84 dB (A), which can be turned on or off.
6.3. Wave setting: Unfiltered 100 Hz – 1500 Hz.
6.4. Filters:
Low pass: 100 Hz – 400 Hz
Band pass: 150 Hz – 600 Hz
High pass: 200 Hz – 1500 Hz.
4.6.5. LCD display: High-brightness true color screen with 320 × 240 pixels, suitable for outdoor use.
4.6.6. Continuous working hours: Powered by lithium batteries, convenient for on-site use.
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