Power Cable Fault Tester Buying Guide

Power Cable Fault Tester Buying Guide

2021-11-05
NOYAFA
49

On this page, you can find quality content focused on Power cable fault tester. You can also get the latest products and articles that are related to Power cable fault tester for free. If you have any questions or want to get more information on Power cable fault tester, please feel free to contact us.

To ensure the quality of Power cable fault tester and suchlike products, SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED takes measures from the very first step - material selection. Our material experts always test the material and decide on its suitability for use. If a material fails to meet our requirements during testing in production, we remove it from the production line immediately.NOYAFA insists on giving back to our loyal customers by providing cost-effective products. These products keep pace with the times and exceed similar products with constantly improved customer satisfaction. They are exported all over the world, enjoying a good reputation among targeted customers. With our continuous improvements in the products, our brand is recognized and trusted by customers.Customers can count on our expertise as well as the service we rendered through Best Cable Tester Supplier in China _ Noyafa as our team of experts stays with current industry trends and regulatory requirements. They are all well-trained under the principle of lean production. Thus they are qualified to provide the best services for customers.
more products
recommended articles
Info Center News
How Does the Power Cable Fault Tester Detect the Fault Point
How Does the Power Cable Fault Tester Detect the Fault Point
How to detect the fault point of power cable fault tester: it is composed of notebook computer, test system, path signal generator, path signal receiver and positioning instrument. It can complete the two tasks of cable fault test and cable data management. Notebook computer for measurement control, data processing and cable data management. The fault test system can measure the distance between the fault point and the test end at one end of the fault cable, and can also be used to measure the length of the cable and the propagation speed of radio waves in the cable. The path signal generator can generate 15KHz, * large amplitude 30V intermittent sine wave signals for finding cable paths. The path signal receiver is used to receive the path signal, find the cable direction and estimate the buried depth of the cable. The locator is used to locate the fault point. Technical performance of power cable fault tester 1. Fault test system ● it can test various faults of various power cables and open circuit and short circuit faults of communication cables and local telephone cables. ● the speed of radio wave propagation in any cable of known length can be measured. ● test distance: not less than 40km ● system error: less than 0.5m ● sampling frequency: 25MHz ● test blind area: less than 5m ● power supply: AC 220V ± 10% 2. Pathfinder signal generator. ● signal frequency: 15KHz ● oscillation mode: intermittent ● output power: 30W ● power supply: 220V ± 10% 2. Test sensitivity of power cable fault tester: the signal source with 50 Ω internal resistance outputs 300Hz signal, and the input signal of the pointing instrument shall not be greater than 10 when the output is maintained at 2V and the signal-to-noise ratio is better than 20:1 μ V。 ● input impedance: not less than 1.2k Ω. ● use 2 × 2000 Ω headphones. ● working voltage: 9V ± 10%. ● operating ambient temperature: - 10 ℃ 40 ℃
Brief Introduction of Power Cable Fault Tester
Brief Introduction of Power Cable Fault Tester
Brief introduction of power cable fault tester power cable fault tester is a special cable detection equipment used to solve the test of open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the * * test of open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. Brief introduction power cable fault tester is applied to various industries such as power, communication, petrochemical industry, coal mine, metallurgy, aerospace and so on. Xi'an cable fault tester is a pioneer in the field of cable fault testing. Based on the industrial embedded computer platform system, the advanced network and digital communication technology are adopted, which greatly improves the use function and test accuracy of the instrument. As we all know, no matter the high resistance fault or the rear * * point of the cable, it is inseparable from the special booster device for cable fault detection. In the past, the test transformer, operation box and pulse capacitor were used to boost the voltage, which has the disadvantages of bulkiness and complex wiring. The cable fault high-voltage signal generator solved this problem and made the cable fault detection portable, This * * improvement has been highly praised by the industry. Dear customers: the company also has underground pipeline detector, high-voltage cable fault tester and cable fault locator products. You can call the company's service phone through the website to learn more product details. Perfect and beautiful service is our pursuit. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Characteristics of Power Cable Fault Tester
Characteristics of Power Cable Fault Tester
Power cable fault tester is a special cable detection equipment used to solve the test of open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the accurate test of open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. Power cable fault tester is a powerful cable fault comprehensive test system with high-speed data acquisition and superior data processing ability, which is born by absorbing the advantages of 20 cable fault testers at home and abroad. Based on the industrial embedded computer platform system, she adopts today's advanced network and digital communication technology, which greatly improves the use function and test accuracy of the instrument. The test system consists of test host, fault locator and cable Pathfinder. It is used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the accurate open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. For the cable high resistance fault test, our company launched the domestic light and small portable cable fault high voltage signal generator, which has the advantages of simple test wiring, safety and portability, and is pioneered in China. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The main products are cable fault tester, underground pipeline detector, street lamp cable fault tester, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Instructions for Power Cable Fault Tester
Instructions for Power Cable Fault Tester
The power cable fault tester is a special cable testing equipment used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. â—† free on-site guidance, training and testing until the user is skilled and satisfied, and there are actual faults, which can be solved on site. â—† battery powered, truly portable; The test distance is greater than 40km. The host test error is less than 0.2m. â—† the host adopts industrial embedded computer system and 12.1-inch large screen LCD touch screen. â—† automatically select the sampling frequency, with a low of 6.25mhz and a high of 100MHz. â—† any double wave comparison function, test waveform can be stored, called, compressed and expanded arbitrarily. â—† the fault distance is automatically displayed, and the double cursor can move * * to 0.18m, which improves the test accuracy. â—† built in various field waveforms and field physical wiring diagrams for reference and learning. â—† cable data management software can establish perfect cable file management information. â—† high precision digital display fixed-point instrument, direct indication of the distance between the test end and the fault point, pioneered in China. â—† it can support wireless network card and carry out technical communication with our company anytime and anywhere. â—† the whole machine is guaranteed for three years, free training, free tracking service and free software upgrade. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The main products are high voltage cable fault locator, buried cable fault detector, live cable identifier, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Basic Introduction of Power Cable Fault Tester
Basic Introduction of Power Cable Fault Tester
Basic introduction of power cable fault tester power cable fault tester is a special cable testing equipment used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. Free on-site guidance, training and testing until the user is proficient and satisfied, and there are actual faults to be solved on site. The power cable fault tester is battery powered and truly portable; The test distance is greater than 40km. The host test error is less than 0.2m. The host adopts industrial embedded computer system and 12.1-inch large screen LCD touch screen. Automatically select the sampling frequency, * low is 6.25mhz, * high is 100MHz. Arbitrary dual wave comparison function, test waveform arbitrary storage, call, compression and expansion. The fault distance is automatically displayed, and the double cursor can move * * to 0.18m, which improves the test accuracy. Built in a variety of field waveforms and field physical wiring diagrams for reference and learning. Cable data management software can establish perfect cable file management information. High precision digital display fixed-point instrument, direct indication of the distance between the test end and the fault point, pioneered in China. It can support wireless network card and carry out technical communication with our company anytime and anywhere. The whole machine is guaranteed for three years, free training, free tracking service and free software upgrade. Dear customers: the company also has high-voltage cable fault locator, underground cable fault tester, high-voltage cable fault tester and other products. You can call the company's service phone through the web page to learn more product details. Perfect and beautiful service is our pursuit. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Introduction of Power Cable Fault Tester
Introduction of Power Cable Fault Tester
Main features of power cable fault tester power cable fault tester is a special cable testing equipment used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cable, as well as the open circuit and short circuit faults of coaxial communication cable and local telephone cable. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. Free on-site guidance, training and testing until the user is proficient and satisfied, and there are actual faults to be solved on site. The power cable fault tester is battery powered and truly portable; The test distance is greater than 40km. The host test error is less than 0.2m. The host adopts industrial embedded computer system and 12.1-inch large screen LCD touch screen. Automatically select the sampling frequency, * low is 6.25mhz, * high is 100MHz. Arbitrary dual wave comparison function, test waveform arbitrary storage, call, compression and expansion. The fault distance is automatically displayed, and the double cursor can move * * to 0.18m, which improves the test accuracy. Built in a variety of field waveforms and field physical wiring diagrams for reference and learning. Cable data management software can establish perfect cable file management information. High precision digital display fixed-point instrument, direct indication of the distance between the test end and the fault point, pioneered in China. It can support wireless network card and carry out technical communication with our company anytime and anywhere. The whole machine is guaranteed for three years, free training, free tracking service and free software upgrade. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and superior technical services. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Working Principle of Cable Fault Tester
Working Principle of Cable Fault Tester
Working principle of power cable fault tester consists of three main parts: power cable fault tester host, cable fault locator and cable path tester. The host of the cable fault tester is used to measure the nature and total length of the cable fault and the approximate position between the cable fault point and the test end. The cable fault locator determines the exact location of the cable fault point based on the approximate location of the cable fault point determined by the host of the cable fault tester. For buried cables with unknown direction, a pathfinder shall be used to determine the underground direction of the cable. The basic method of power cable fault test is to apply high-voltage pulse to the fault power cable to produce breakdown at the cable fault point. When the cable fault breakdown point discharges, it generates electromagnetic wave and sound at the same time. The working principle of the application of arc reflection method (secondary pulse method) in cable fault location: firstly, a high voltage pulse with a certain voltage level and energy is applied to the faulty cable at the test end of the cable to make the high resistance fault point of the cable break down and burn arc. At the same time, add the low-voltage pulse for measurement at the test end. When the measurement pulse reaches the high resistance fault point of the cable, it encounters an arc and reflects on the surface of the arc. When arcing, the high resistance fault becomes an instantaneous short-circuit fault, and the low-voltage measurement pulse will change obviously in impedance characteristics, so that the waveform of flashover measurement becomes a low-voltage pulse short-circuit waveform, making the waveform discrimination particularly simple and clear. This is what we call the "secondary pulse method". The received low-voltage pulse reflection waveform is equivalent to the waveform of a wire core completely short circuited to ground. Superimpose the low-voltage pulse waveform obtained when releasing the high-voltage pulse and when not releasing the high-voltage pulse. The two waveforms will have a divergence point, which is the reflected waveform point of the fault point. This method combines low-voltage pulse method with high-voltage flashover technology, which makes it easier for testers to judge the location of fault point. Compared with the traditional test methods, the advantage of the secondary pulse method is to simplify the complex waveform in the impulse high-voltage flashover method into the simplest low-voltage pulse short-circuit fault waveform, so the interpretation is very simple and the fault distance can be accurately calibrated. The triple pulse method adopts the double impact method to prolong the arc burning time and stabilize the arc, which can easily locate the high resistance fault and flashover fault. The triple pulse method has advanced technology, simple operation, clear waveform and fast and accurate positioning. At present, it has become the mainstream positioning method of high resistance fault and flashover fault. The third pulse method is an upgrade of the second pulse method. The method is to first measure the reflected waveform of the low-voltage pulse without breaking through the fault point of the measured cable, then impact the fault point of the cable with the high-voltage pulse to generate an arc, trigger the medium voltage pulse when the arc voltage drops to a certain value to stabilize and prolong the arc time, and then send the low-voltage pulse, Thus, the reflected waveform of the fault point is obtained. After the superposition of the two waveforms, it can also be found that the divergence point is the corresponding position of the fault point. Because the medium voltage pulse is used to stabilize and prolong the arc time, it is easier to obtain the fault point waveform than the secondary pulse method. Compared with the secondary pulse method, the triple pulse method does not need to select the synchronization time of arc burning, and the operation is also more simple.    
Common Detection Methods of Power Cable Fault Tester
Common Detection Methods of Power Cable Fault Tester
Power cable is an underground equipment. Generally, the soil layer plays a protective role for the cable. However, once a fault occurs, it is also very difficult to find it. It takes a lot of time, which is a great waste of human and material resources. In this case, it is necessary to use cable fault detection equipment, such as power cable fault tester. The initial measurement method of common fault cable is divided into control circuit bridge balance method, bottom pressure single pulse reflector method and flash detector method. In the initial measurement method of cable fault, the appropriate cable fault detector is adopted according to the different characteristics of common faults, The distance between the common fault point and the test case and the relative path of the common fault point are accurately measured and calculated by using the cable route technical document. There are three key methods of initial measurement: control circuit bridge balance method, bottom pressure single pulse reflector method and flash detector method. The method to improve the sensitivity of the galvanometer can refit the DC amplifier in front of the galvanometer, but the gain value of the amplifier is too high, resulting in serious zero drift and the bridge can not be balanced. When the working voltage of the switching power supply of the bridge rises, the compressive strength of the insulating layer of the bridge body to the ground must be relatively increased and the safety precautions for the maintenance and actual operation personnel shall be taken. When the working voltage of the switching power supply rises to a certain value, the common fault resistor is generally unstable. If the resistance of the grounding wire suddenly decreases to zero, High voltage will be applied to the bridge and the galvanometer will be damaged. Common use methods of power cable fault tester. The characteristics and provisions of the bridge method are: it is only applicable to accurately measure the server downtime in the cable line. If there are many other common fault points in the line, it can not be used. The less the jumper wire at the other end of the cable route, the higher the jumper wire. Its cross section shall be close to the cross section of the cable conductor, and the connection shall be tightened to make its contact resistance close to zero. When raising the experimental working voltage for fault test of high resistor grounding device, be sure to give a very safe prompt. After the common fault burn through equipment is used to convert the common fault of flashover into the common fault of grounding device, the power bridge method shall be used for accurate measurement immediately, so as to prevent the insulation layer from being repaired and the common fault point from being closed again. In addition, it is not necessary to burn the resistance of the grounding wire of common faults too low, so as to prevent the difficulty of producing too little sound when using the precise measuring point method. The bottom pressure single pulse reflector method, commonly known as the single pulse method, uses the basic principle of the radio wave reflector caused by the mismatch of wave impedance when the differential signal is dispersed in the cable line. The time of the single pulse wave reflector and the wave speed of the cable are measured on the digital oscilloscope to clarify the distance between the cable fault points. In general, the characteristic impedance in the cable line is not matched with the right point. In addition to the disconnection (lead) of the electrical conductor, short circuit fault and common faults of the grounding device, there are all points with uneven characteristic impedance at the cable joint and where the cable crosses the metal material pipeline, which will also cause the reflection surface of the wave. Be sure to identify them carefully during detection. Especially when the resistance of the grounding wire exceeds about 2 3 times of the wave impedance of the cable, the fluctuation amplitude of the reflecting surface is small, and it is impossible to identify common fault points. The single pulse method is most suitable for measuring the common faults of disconnection. In addition, it is also suitable for measuring the resistance of grounding wire less than 100 & omega; Faulty cable.
no data
Contact us
Leave a message
we welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.
During 15 years development, Noyafa has become the most famous brand in cable testing industry in China. With excellent production capability, reliable quality, good after-sales service, we get good reputation from customers all over the world.
no data
Contact Person:Lory Liu
Contact Us

+86-0755-27530990

If you have any question, please contact Lorry via

wire@noyafa.com

Add:Wanjing Business Center, #2506 Xinyu Road, Xinqiao, Baoan District, Shenzhen, China

Copyright © 2021 NOYAFA | Sitemap 

chat online
Please message us and we ensure to respond ASAP, what product you intrested in?