HZ-A50 Trolley Mounted Cable Fault Locating System

Brief Introduction

The HZ-A50 trolley type cable fault tester is a cable fault testing system that our company has been committed to in the field of power cable fault testing for a long time. In order to meet the rapid development of the power industry, combined with various experiences and dedicated research, we highly integrate traditional and independent cable fault testers, integrated high-frequency and high-voltage power supplies, multiple pulse generators, path transmitters, insulation resistance testers, and other independent units into one. This system is used for rough testing and path finding of various faults in power cables, as well as precise fault location. The testing software automatically recognizes the card position and reads the fault distance, truly making the testing of cable faults lightweight, simple, efficient, and safe. Provide convenience for rapid testing of power cable faults.

Advantages And Characteristics

The system adopts an integrated design, making it easy and flexible to move.

Applicable to testing various main insulation faults of 380V-220kV power cables.

Highly integrated fault testing, high-voltage power supply, insulation resistance testing, cable path testing, and other functions.

The fault testing unit adopts an industrial embedded computer platform and Linux operating system.

The high-frequency and high-voltage power supply unit adopts an optoelectronic mouse control system, reflecting human-computer interaction, convenient operation, and simple and intuitive display.

The insulation resistance testing unit is digital, and the LCD display screen can display the instrument's working status and test results.

The LCD display screen of the cable path testing unit can display the transmitter, received signal frequency, and signal strength.

The system is equipped with a 25m testing line, which facilitates cable fault testing in remote, close range, and complex environments.

Technical Parameter

Trolley parameters

External dimensions: 530 (L) * 430 (W) * 960 (H) mm

Weight: 50kg

Input power supply: AC220V, 50Hz

Charging adapter: DC12V, DC16.8V

Fault testing unit：

High integration, low power consumption, integrated design, high stability.

It can test various faults of power cables with different voltage levels, cross-sections, media, and materials below 220kV, including open circuit, short circuit, low resistance, high resistance leakage, and high resistance flashover faults.

It can also be used to test various faults in railway communication control cables, street light cables, airport signals, and mining power cables.

The speed of radio wave propagation in any cable with known measurable length.

Display method: 12.1-inch industrial grade LCD screen (Linux operating system).

Storage space: 4G electronic disk.

Testing methods: Low voltage pulse method, lightning current method, multiple pulse method.

Operation method: Knob mouse operation.

Testing distance: not less than 50km.

Minimum testing distance (blind spot): 5 meters.

Precision positioning error: ± 0.2m.

Testing error: The system error is less than ± 1%.

Multiple pulse generator: impulse voltage ≤ 40kV.

Resolution: v/f m; V is the wave propagation velocity m/ μ S; Software cursor 0.10 meters.

Sampling frequency: 200MHz, 100MHz, 50MHz, 25MHz, 12.5MHz, 6.25MHz.

Pulse width: 100ns, 200ns, 500ns, 1 μ s. 2 μ s. 5 μ S (software automatic matching).

Power supply and power consumption: AC220V ± 10%, not exceeding 15W; DC12V (7AH) shall not exceed 20W.

Standby time: can be used continuously for about 6 hours.

High frequency and high voltage power supply unit:

This product is mainly used for sampling impulse discharge of high resistance fault waveforms during fault testing of power cables with a voltage of 32kV and below, and for precise determination of fault points during impulse discharge.

Output methods: pulse output, DC output

Output voltage: negative pressure, ≤ 32kV

Working mode: single pulse, continuous pulse, DC output

Built in capacitor: 4uF/32kV

Discharge energy: ≤ 2048J

Pulse period: 3s to 8s adaptive

Automatic discharge: Automatic discharge upon shutdown

Working power supply: Power frequency 220V ± 10%

Display screen: 800 × 480 resolution touch screen display

Path testing unit:

Detection distance: 5km

Detection depth: 3m

Routing error: 5cm

Basic transmitter parameters:

Output frequency: Transmission frequency 9.6kHz

Output power: 5W

Basic parameters of routing receiver:

Input frequency: 9.6kHz

Detection routing error: ± 2cm

Detection depth error: ± 5cm.

LCD display: High brightness true color screen with 320 x 240 pixels, suitable for outdoor use.

Insulation resistance testing unit

Output voltage: 500V, 1000V, 2500V, 5000V.

It has functions such as absorption ratio, polarization index, rapid testing, and automatic insulation testing.

It has an automatic discharge function and a discharge speed block.

It has protection functions such as short circuit, overload, and undervoltage of overcurrent batteries.

Automatic shutdown when standby time reaches 10 minutes.

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

Ultra quiet intelligent fixer section

Sensor dynamic range: sound channel>104dB, magnetic field channel>110 dB. Sensor frequency range: 100 Hz --1500 Hz

The amplification factor of the impact discharge sound is greater than 90dB, and the upper limit of the impact discharge volume is 84dB (A), which can be turned on or off

Wave setting: unfiltered 100 Hz --1500 Hz

Low pass filtering: 100Hz -- -400 Hz Bａnd pass filtering: 150Hz -- -600 Hz High pass filtering: 200Hz -- -1500 Hz

LCD display: High brightness true color screen with 320 x 240 pixels suitable for outdoor use.

Continuous working hours on site: Powered by lithium batteries, convenient for on-site use.