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Place of Origin: | Xi'an, Shaanxi, China |
Brand Name: | XZH TEST |
Certification: | CE |
Model Number: | XHGG502 |
XHGG502 Cable Fault Pre Locator is a special instrument for measuring and analyzing power cable status and fault distance. It combines modern electronic technology and computer technology to realize signal filtering, acquisition, data processing, graphic display and graphic analysis to complete cable speed measurement, cable Length test, cable fault distance test.
This cable fault locator adopts 12.1-inch industrial-grade computer control, windows operating system, touch operation mode, ultra-high brightness, large LCD screen display interface for user-friendly use, automatic continuous sampling, and real-time accurate waveform acquisition.
The XHGG502 ARC cable fault pre locator adopts the latest technology of embedded industrial computer and the most advanced "eight pulse method" (multiple pulse method) testing technology, so that any high-resistance fault presents the simplest short-circuit fault waveform similar to low-voltage pulse Features are easy to read. It also has the operation modes of shock high voltage flashover method and low voltage pulse method, which is convenient to detect various cable faults. The success rate of fault detection, test accuracy and test convenience are better than any domestic testing equipment.
Main features
• The reflected signal sent by the pulse coupler is automatically displayed, and the full-length waveform of the cable open circuit is displayed at the same time.
• Automatic calculation and display of fault distance;
• It has the function of storing massive test waveforms: the waveforms obtained from the field test can be conveniently stored in the instrument according to the specified order, and can be recalled and observed at any time;
• With standard printer USB interface;
• Simple operation and high reliability. Has a very high cost performance;
• Built-in polymer lithium battery power supply, which can test cable open circuit and low resistance short circuit fault in no power supply environment.
The test working modes of XHGG502 ARC cable fault pre locator include low voltage pulse method, high voltage flashover method, and multiple pulse method. Here focus on the multiple pulse method that is different from other devices.
The purpose of using the multiple pulse method to test the cable fault is to make the sent low-voltage test pulse effectively avoid the cosine large oscillation interference that occurs at the moment of the high-voltage impact of the faulty cable, and obtain a standard and clear similar short-circuit during the relatively stable short-circuit arc at the fault point. The echo of the fault, and there is a large choice of ideal test waveforms.
Different impulse high voltages, different cable lengths, different cable fault distances, and the period and duration of large cosine oscillations are very different. The waveform collected by the simple secondary pulse method is often disturbed by the large cosine oscillation due to insufficient transmission delay time, and the waveform is chaotic and difficult to analyze. It can only be ensured by adjusting the delayed launch time of the test pulse or using a medium-voltage arc-extending device, which increases the difficulty of operation and the weight and cost of the equipment. The multiple pulse method just overcomes these difficulties and greatly simplifies the testing procedures. Eight sets of test waveforms are obtained from the high-voltage flashover process of one impact, and there are always several sets of waveforms that are convenient for fault distance interpretation. This is also the advantage of the multiple pulse method compared with the second pulse method.
Operation system
The device has three test methods, namely, multiple pulse method, low voltage pulse method, and high voltage flashover method.
The low-voltage pulse method is suitable for testing low-resistance faults, the entire length of the cable or the open-circuit fault distance, and the short-circuit cable fault distance.
The high-voltage flashover method and multiple pulse method are suitable for testing the high-resistance cable fault distance.
(ARC Multiple Pulse)
(Low Voltage Pulse)
(High Voltage Flashover)
Technical parameters
Sampling frequency | 400MHz |
Minimum resolution | 0.5m (100m/us) |
Low voltage pulse width | 0.2uS/2uS/4uS |
Test blind zone | ≤20m |
Ranging range | ≥68km |
Measurement error | ≤±(0.5%×L+1m), L is the cable length |
There are three test cable lengths | <1km (short distance); <3km (medium distance); >3km (long distance), (low-voltage pulse test amplitude: 400Vpp) |
Pulse coupler withstand voltage | DC 35kV |
Measuring pulse | Low voltage pulse 300V±10% |
Output impedance | 350 Ohm |
Input signal gain | ±64dB |
Power consumption | 120VA |
propagation speed factor | 10-300m/μs |
Working conditions | temperature -25℃~+65℃, relative humidity 85%, atmospheric pressure 750±30mmHg |
Volume and weight |
Cable fault tester 430×380×220mm-10kg; Pulse coupler 430×380×220mm-10kg |
The device can collect 8 sets of cable information waveforms at a time, and select the best and easiest to analyze waveform for analysis.
Panel introduction
1 Display: 12.1-inch industrial-grade touch screen;
2 Communication: low-voltage pulse method pulse signal output interface, high-voltage flashover method sampler receiving signal input interface;
3 Grounding: safety grounding terminal;
4 Power indicator: Indicates the internal battery power, displayed in 4 grids;
5 USB-1: External wireless network card and USB communication device;
6 USB-2: External wireless network card and USB communication device;
7 Power switch: "I" position, use AC 220V power supply to supply power to the system;
The “II” gear uses the internal battery to power the system; when the “power socket” is connected to the AC 220V power supply, it also charges the battery at the same time;
"O" gear, turn off the system power;
8 Power socket: working power supply of the instrument, AC 220V connection port;
9 Fuse: the place where the fuse of the AC 220V power supply system is installed;
10 Self-check: transmit signals under multiple pulses;
11 On/Off: Turn on and off the working power of the industrial computer;
12 Amplitude: Adjust the amplitude knob when collecting waveforms to change the amplitude of the collected waveforms;
13 Indicator light: the indicator light reflecting the inspection method;
14 Displacement: Adjust the displacement knob when acquiring waveforms to change the baseline height of the acquired waveforms;
Packing list
Onsite test
Company profile
XZH TEST is a professional cable fault detection equipment manufacturer. We are a young team. Our development philosophy is humanized management, intelligent cloud-based products, and internationalized operations. Our development mission is to make electrical equipment free from undetectable failures.
Since its inception in 2013, our company has grown to become one of the largest manufacturer of underground cable fault detection equipment in China. An ISO 9001 and CE certified company, we produces a broad range of testing equipment.
What we can do
We have the ability to innovate new products and technologies.
We can provide complete system solutions for your project.
We provide online and offline practical and theoretical training.
We provide instrument repair and calibration.
FAQ
1. Are you a trading company or a manufacturer?
We are a professional manufacturer with more than 10 years of experience. We can strictly control the quality of parts and finished products.
2. What is the delivery time and inventory?
If our best-selling products are in stock, it will be 5-8 working days for shipment. But for mass production and customized production, the time will take 2-4 weeks.
3. What are your payment terms?
Payment ≤ USD 2000, 100% T/T prepayment. Orders over USD 2000 can be negotiated.
4. How long is your product warranty?
We provide 1 year warranty for the equipment.
5. How do you ensure quality?
The product links include R&D, manufacturing, commissioning and technical support, following strict and scientific management principles. Therefore, we can support strong production and R&D capabilities, and can produce high-quality products at competitive prices to meet customers' high requirements.
6. What support can I get?
We will provide training support, marketing support, technical support and supply chain support. You can contact us for more information.
7. Where is your factory? Can I visit your factory?
We are located in Xi'an, Shaanxi, China. We are close to Xi'an Xianyang International Airport, which is about 2 and half hours by plane from Shanghai and Guangzhou. All customers from all over the world are welcome to visit us.
8. How to become your dealer?
Every company interested in power system instruments can contact us without hesitation, including website letters, emails, telephones, etc. We will contact you quickly according to your company information and cooperation intentions.