Wire and cable fault tester

The ST-330A cable fault tester is a new generation of portable intelligent cable fault detection instrument carefully designed and manufactured by our company. This instrument consists of a highly intelligent industrial touch screen integrated computer, a USB interface data collector, a high-energy polymer battery, a charging adapter, and accessories. The instrument is small in size, light in weight, easy to use, and convenient to carry.

1、 Product Introduction of Wire and Cable Fault Tester

The product adopts time-domain analysis method to test low resistance, short circuit, open circuit, high resistance leakage fault and high resistance flashover fault of power cables, communication coaxial cables, local telephone cables, control cables, mining cables and submarine cables of various voltage levels.

The ST-330A cable tester is a new generation of portable intelligent cable fault detection instrument carefully designed and manufactured by our company. This instrument consists of a highly intelligent industrial touch screen integrated computer, a USB interface data collector, a high-energy polymer battery, a charging adapter, and accessories. The instrument is small in size, light in weight, easy to use, and convenient to carry.

The human-machine interface of this instrument is friendly, the menu design is novel and intuitive, and the parameter processing is just right. The black background of * allows the instrument to work in strong lighting environments. Bring a clear and distinct feeling to users who use this instrument. The setting of various parameters, display of instrument working status, compression, expansion, storage and retrieval of test waveforms, waveform displacement, on-screen comparison and other functions can all be operated through touch operation. The collected data has high reliability, the waveform display is clear and easy to distinguish, the echo inflection point is obvious, and it is particularly easy to determine the fault distance. It is particularly noteworthy that this instrument has a strong ability to resist electromagnetic interference. The special circuit design ensures that the instrument will not crash in testing environments with tens of thousands of volts of impact high voltage. The design of this instrument adheres to our company's consistent principles of high technology, high precision, and high quality, and has raised the level of cable fault testing to a new height. The ST-330A cable fault detector has significant characteristics such as accurate testing, high intelligence, wide adaptability, and stable performance.

2、 Functional characteristics of wire and cable fault tester

1. It can test various types of faults in copper aluminum core power cables, coaxial communication cables, and local telephone cables with voltage levels below 35KV, such as open circuit faults, short circuit faults, high resistance flashover faults, and high resistance leakage faults.

2. It has multiple testing methods, such as low-voltage pulse method, impulse high-voltage current sampling method, DC high-voltage flashover method, etc.

3. The instrument is powered by high-energy polymer rechargeable batteries, and the sampling board interface is a USB type direct microcomputer power supply. Combined with advanced current sampling technology, the system truly isolates operators and testers from high voltage, with strong anti-interference ability, while ensuring testing reliability and human-machine safety.

4. The pre sampling measurement unit adopts advanced signal processing technology, with a fully Chinese screen display. The test waveform features are clear and easy to distinguish, making cable fault analysis easier to grasp.

5. Adopting the WinCE operating system software, it has a more user-friendly design and is easy to operate.

6. The online service business carried out by the company is more convenient for users. As long as you send us the test waveform, you can receive expert analysis and guidance on the same day. The company will regularly send you various cable fault waveforms and their analysis results collected, so that you will soon become an expert in cable fault testing.

7. Dual trajectory comparison data processing technology on the same screen is beneficial for comparing and analyzing waveforms.

3、 ST-330A Technical Parameters

Distance measurement range: 4m to 40Km

Distance measurement accuracy: When the measurement range is less than 1km, the measurement error shall not exceed 1m

When the measurement range is greater than 1km, the relative measurement error shall not exceed 0.5%

Pulse amplitude: not less than 250V at 50 Ω.

Pulse width: 0.2 μ s, 2 μ s, and 4 μ s.

Sampling frequency: 48MHz, 24MHz, 12MHz, 6MHz.

System measurement error: The measurement result of the host, combined with the digital synchronous fixed-point instrument measurement, has a system error of 10cm.

Reading resolution: V/2f V wave propagation speed in cable (m/μ s) f sampling frequency (MHz)

For example, if the propagation speed of oil immersed paper cable is V=160m/μ s and f=40MHz sampling is used, the reading resolution is 160/(2 × 40)=2m

Pre set radio wave propagation speed for 5 cable media: oil immersed paper: 160m/μ s; Cross linked polyethylene: 172m/μ s; Polyvinyl chloride: 184m/μ s; Mining rubber sheathed cable: 100m/μ s; And the setting of radio wave propagation speed for other non power cables (optional medium).

For other non power cables, the propagation speed of radio waves in the cable can be measured after inputting the known full length of the cable.

Sampling method: current sampling method.

Power supply: Power frequency or internal polymer rechargeable battery.

Power frequency: AC 220V ± 10%, frequency 50Hz ± 5%, the instrument can work normally for more than 24 hours.

Internal battery: After the battery is fully charged, the instrument can work continuously for about 4 hours.

Working temperature: -10 º C to 50 º C

Host volume: 330 × 230 × 150mm, weight: 3

4、 Product List