Shop Best Lan Cable Tracker in NOYAFA

Shop Best Lan Cable Tracker in NOYAFA

2021-10-21
NOYAFA
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lan cable tracker is fabricated using quality tested components and the highly-advanced technology by the brilliant team of professionals in SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED. Its reliability guarantees a consistent performance throughout the lifetime and ultimately ensures the total cost of ownership is as low as possible. So far this product has been granted a number of quality certificates.In order to bring awareness to NOYAFA, we make ourselves available to our customers. We frequently attend conferences and events in the industry, allowing customers to closely interact with us, test our products and feel our service in person. We strongly believe that face-to-face contact is more effective in transferring the message and building a relationship. Our brand now becomes more recognizable in the global market.We, at Best Cable Tester Supplier in China _ Noyafa, provide lan cable tracker performance and custom services to our customers and help them achieve the best. We maintain the quality and confirm its compliance with the changing customers' expectations with respect to various aspects such as price, quality, design and packaging.
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Best Test Tools for Wire Testers
Best Test Tools for Wire Testers
Automation software tools are now making their way into the testing arena. And rightfully so. There is a lot of value in knowing that you can automate many important steps so that you can spend more time on the actual testing and less time on the manual process. What's more, it allows you to see what actually went wrong during your testing process - instead of just seeing if something happened at all.Wire testers are an important part of any testing workflow. They should be very accurate and precise when they do their job: They must send out a test email once per day, which is usually only 20-30 minutes long, check the email sent by the wire tester and report any issues there to your internal team or external client’s team via email.There are many automated software tools for wire testers. But none of them is suitable for a complete automation of the testing process.The solution to this issue is AI-based software. AI allows you to automate the testing process by writing simple scripts, which will run through all steps in the test process and check if they passed or failed. In turn, this is a significant improvement over manual test automation because you can focus on other aspects such as content creation and research, rather than on test automation itself.The Android wire tester helps the creator to perform quick and precise checks on Android applications.If you want to improve the quality of your development work, there are a number of tools which can help. They can help you by:The best Android wire tester can expose potential vulnerabilities in your application and help you to find them.Automation software and automation testing are controversial fields in the testing community. Until now, automated tests have been manual and they were done by a human tester.Nowadays, there are companies that offer artificial intelligence to automate their existing test procedures.Automated testing is becoming an important part of modern software testing.It's a common practice to test the same code over and over again to find potential bugs. There are many different tools available for automating this kind of tasks, but the most popular one is Automated Wire Tester (AWT) .We can automate the creation of reports from those tests. We create a report for every code change that we make. We can also create reports for typos, spelling mistakes and so on. This kind of automated reporting tool is helpful for our testers as it saves them time and helps them be more efficient in their work.When you read a new Android phone, it's important to know if it is worth buying.Automation software can help with wire testing by automating tasks and saving time. Automation software is intended to replace humans in certain technical roles, such as wire testers.Wire testers are human beings who work on the various parts and aspects of computer systems, and gather information about them. Automation software can be used when the system is not available or because human beings are not available for certain tasks (e.g., during infrastructure upgrades).A good Android app wire tester should not just test your apps, but should also save you time and money.A good Android Wire Tester is important for few reasons. First of all, it can provide key information about the device by analyzing the device's behavior. Secondly, it can provide a quick insight into your desired user experience which will help in improving your marketing strategies or sales goals.Automation can be used to enhance the quality of wire testers.Tracing the evolution of the role of automation software in the Wire Tester industry is a complex and fascinating topic. While some companies have invested heavily in automation software for wire testers, others have not. The reason has to do with two key reasons:#1 They are unwilling to invest too heavily in a new technology and they don't want to alienate their existing customers#2 They don't think that automation is necessary at all. There are simply no applications that need it at all at this point in time. One could argue that infrastructure is still lacking but I personally believe that this argument isn't valid anymore given today's state of the art technologies such as CNC machines and 3D printers, etc. Thus, today's
Do You Know How to Choose a Suitable Cable Fault Tester
Do You Know How to Choose a Suitable Cable Fault Tester
Cable fault tester is one of the common equipment to detect cable fault. It has stable performance, can quickly and accurately find out the fault point, and the maintenance personnel can quickly carry out maintenance work, which greatly provides work efficiency. The purchase of cable fault tester is also a problem valued by many friends. Next, we will focus on the precautions for purchase. Another situation of the power supply analysis of the damage of the cable fault tester in recent years, 80% of which is due to the poor wiring or wrong wiring during high-voltage impulse flash, resulting in the damage of the instrument. If the battery is used for power supply, even if the high-voltage is connected in series, it will not form a loop to the earth and can only cause the common mode effect, so as to completely avoid the occurrence of machine damage accidents. Problems of collector and notebook computer: the test scheme of collector notebook is a design scheme proposed by the company in 1996 and put into practice. In 1997, the cable fault test and management system was launched. Through several years of market use, it seems that it does not adapt to China's national conditions. At that time, the principle considered in the design was to give users a good tool and strong data processing ability. But for the following reasons. At present, it has been discontinued. Reasons why notebook collector is not suitable for on-site cable fault test: 1. The on-site environment is not suitable for the use of notebook computers. Generally speaking, notebook computers are relatively delicate and suitable for office or business travel. However, most of the cable fault tests are in substations or outdoors, with large dust, large interference and complex environment, which will greatly shorten the service life of notebook computers. And the sampling waveform is not good. 2. Generally, the switching power supply of notebook computer can only be used when the impact of power grid is small. When the high-voltage impulse flash of cable fault is carried out, the power grid fluctuates greatly, which is very easy to cause damage to the power supply of notebook computer. Therefore, when testing the high-voltage impulse flash of notebook computer, it is emphasized to disconnect the charging power supply and test with the internal battery. 3. In the cable fault test, the high voltage string into the tester is a common problem due to the wiring problem. The impact resistance of the notebook computer is very weak. High voltage enters the notebook computer through the test line collector, which will eventually lead to the damage of the notebook computer interface. Such lessons have been encountered in several cases in our customers. Although current sampling can improve the safety of equipment at present, current sampling is chaotic for short-range fault waveform and difficult to identify, so it is often misjudged when testing short-range fault. 4. Computer viruses will affect the normal use of the equipment. Such problems seem to have nothing to do with our equipment, but users will inevitably make the computer impacted by various computer viruses when using the computer. When there is a problem with the cable, there will be various problems when taking it out for use, and it will not work normally. This results in delayed power supply. At present, the cable fault tester with advanced performance should be equipped with an interface for communication with the computer. Select the cable fault tester with computer interface and test with the cable fault tester on site. After the test, the test waveform needs to be saved and uploaded to the laptop or other computers for archiving, analysis, production of test reports, etc. It should be the best procurement scheme.
Cable Tracker and TV Antenna Finder
Cable Tracker and TV Antenna Finder
The introduction of cable trackerThe introduction of cable tracker is a crucial element in the history of cable TV. Even though it has been around for over two decades, it is still essential to understand its history and how it works.Tips for cable trackerIt is not a good idea to focus on only one topic. When you are writing a cable tracker, you do not want to work on the same topic all the time.Be creative and offer interesting angles on your topic. You can come up with multiple variations of the same thing to keep your audience engagedWriting for cable used to be very difficult and time-consuming. Now, with technological advancements, there are many ways of writing for cable that can be accomplished in an efficient manner.For example: You may want to write many short summaries that appeal to different target audiences at once (i.e., teenagers, young adults). Or you may want to use videos as well as text content since these two mediums are used very frequently by different segments of your audience (e.gHow to use cable tracker?In a recent survey covering 78% of the respondents, cable tracking was found to be the most important method for generating content ideas.The specifications of cable trackerWith the help of a cable tracker, the customer can be aware of where their cable is. This is very important for any business, and especially in the digital world.A cable tracker can be found in almost every household or business, but there is still a huge demand for it, which means that many companies do not have such a device in their offices. So to address this need, it was created so that even if you are at home and unable to get your hands on such a device, you still have access to information about your cables. For instance, if you are working from home and just need to know where your cable is located within the cables at home (or on the office), then this could be a helpful tool that could save you time and money.The product instructions of cable trackerSometimes, cable companies send you a bill for services that you have already paid for. The problem is that they don't tell you what the service actually does.There are plenty of reasons why the customer may want to know what their cable provider actually does.The application of cable trackerThe cable tracker is a product that helps customers to find out what channel you are watching. For example, it will show you the channels that you are watching and what time they are on. It also shows the summary of all channels that you have visited.
Cable Fault Detection and Search Method
Cable Fault Detection and Search Method
For direct short circuit or broken cable fault, the multimeter can be used for direct measurement and judgment; For indirect short-circuit cable fault and grounding cable fault, use a megger to telemeter the insulation resistance between core wires or the insulation resistance between core wires and ground, and judge the cable fault type according to its resistance value. The following describes the method of cable fault finding: zero potential method. Zero potential method is also known as potential comparison method. It is suitable for short cable core to ground fault. This method is simple and accurate, and does not need precision instruments and complex calculation. The measurement principle is as follows: connect the cable fault core wire in parallel with the comparison wire of the same length. When applying voltage ve at both ends of B and C, it is equivalent to connecting the power supply at both ends of two parallel uniform resistance wires. At this time, the potential difference between any point on one resistance wire and the corresponding point on the other resistance wire must be zero. On the contrary, the two points with zero potential difference must be the corresponding points. Because the negative pole of the micro voltmeter is grounded and equipotential with the cable fault point, when the positive pole of the micro voltmeter moves to the point when the indicated value is zero on the comparison wire, it is equipotential with the cable fault point, that is, the corresponding point of the cable fault point. S refers to single-phase knife switch, e refers to 6e battery or 4 No. 1 dry batteries, and G refers to DC microvolt meter. The measurement steps are as follows: 1) connect battery E on phase B and C core lines, and then lay a comparison conductor s with the same length as the fault cable on the ground. The conductor shall be bare copper wire or bare aluminum wire, with equal cross section and no intermediate joint. 2) The negative pole of the micro voltmeter shall be grounded, and the positive pole shall be connected with a long flexible conductor. The other end of the conductor shall be fully contacted when sliding on the laid comparison conductor. 3) Close the knife switch s, slide the end of the flexible conductor on the comparison conductor, and the position when the microvolt meter indicates zero is the position of the cable fault point. High voltage bridge method high voltage bridge method is to measure the DC resistance of cable core with double arm bridge, then accurately measure the actual length of cable, and calculate the cable fault point according to the positive proportional relationship between cable length and resistance. For direct short circuit between cable cores or short circuit point, the contact resistance is less than 1 & omega; The judgment error is generally not greater than 3m, and the contact resistance at the fault point is greater than 1 & omega; The resistance can be reduced to 1 & Omega by increasing the voltage and burning through; Next, measure according to this method. When measuring the circuit, first measure the resistance R1 between core wires a and B, R1 = 2RX R, where Rx is the phase resistance value from phase a or phase B to the cable fault point, which is only the contact resistance of the short contact. Then move the bridge to the other end of the cable and measure the DC resistance R2 between A1 and B1 core wires, then R2 = 2R (l-x) r, and R (l-x) is the phase resistance from A1 phase or B1 phase core wire to the cable fault point. After measuring R1 and R2, short circuit B1 and C1 according to the circuit shown in Figure 3, and measure the DC resistance value between B and C core wires, then 1 / 2 of the organization is the resistance value of each phase core wire, expressed by RL, RL = RX R (l-x), from which the contact resistance value of the fault point can be obtained: r = R1, r2-2rl table. Therefore, the resistance value of the core wires on both sides of the fault point can be expressed by the following formula: RX = (r1-r) / 2, R (l-x) = (r2-r) /2. After the three values of Rx, R (l-x) and RL are determined, the distance X or (l-x) between the fault point and the cable end can be calculated according to the proportional formula: x = (Rx / RL) l, (l-x) = (R (L-2) At the end of the cable, measure the capacitance currents IA1, IB2 and IC3 of the core wire of each phase to check the capacitance ratio between the intact core wire and the broken core wire, and preliminarily judge the approximate point of the broken wire distance. According to the capacitance calculation formula C = I / (2 & PI; Fu), when the positive voltage U and frequency f do not change, C is directly proportional to I. because the frequency of power frequency voltage is f (frequency) Constant, as long as the applied voltage is kept constant during measurement, the ratio of capacitance to current is the ratio of capacitance. If the total length of the cable is l and the distance of the core wire breaking point is x, then IA / ic = L / x, x = (IC / IA) 50. In the process of measurement, as long as the voltage remains unchanged, the reading of ammeter is accurate and the total length of cable is measured accurately, the measurement error is relatively small. The so-called sound measurement method is to find out according to the discharge sound of faulty cable. This method is more effective for the flashover discharge of high-voltage cable core to insulating layer. The equipment used in this method is DC withstand voltage tester. TB is high-voltage test Transformer, C refers to high-voltage capacitor, ve refers to high-voltage rectifier silicon stack, R refers to current limiting resistance, Q refers to discharge ball gap, and l refers to cable core. When capacitor C is charged to a certain voltage value, the ball gap discharges to the cable fault core, and the cable core discharges to the insulating layer at the cable fault, producing a loud and loud spark discharge sound. For open laying cables, it can be found directly by hearing. If it is buried electricity For cable, first determine and mark the cable direction. When searching, put the pickup close to the ground and move slowly along the cable direction. When the sound of Zi and Zi discharge is the largest, this is the cable fault point. Pay attention to safety when using this method, and assign special personnel to monitor at the end of the test equipment and the end of the cable. The cable fault locator produced by our company can not only measure the sound, but also To detect the magnetic signal, the signal strength is displayed visually and synchronously, which can locate the cable fault point faster and more accurately.
Free Wire Tracker
Free Wire Tracker
Developing a good wire tracker would be one of the best things for any copywriter. This is because it will maximize the number of prospects you get to speak with and increase your revenue.The best wire tracker will tell you how many prospects have responded to your message, what they bought, which products they've tried and why. You can then read this information out loud during phone calls and in emails. This is crucial for turning your leads into sales!A wire tracker is a tool that allows you to find out what your competitors are working on. It shows you the products and services your competitors have launched, in case you need to know how to develop an effective marketing strategy.This article is relevant for digital agencies like us who often work with our clients and partners, who get involved in multi-channel marketing. This tool helps us identify opportunities, measure growth and feedback from customers.In the current digital era, it's becoming more and more frequent to use multiple platforms to share content. One such is Wire Tracker. The service is a mobile app that helps clients easily share content through messaging (text, image or video) by just tapping on the relevant options and pressing “Send” to send a message.There are many ways to track your copy. You can type it into a document or use an online tool. But which one is right for you?The best way to manage your time is by reducing it. The best way to do that is by using a wire tracker app.Wire trackers are a tool that helps in tracking the creation of content. They can be used on multiple channels, such as email, social media, blogs and so on. Wire trackers help us keep track of the work we are doing by providing us with a comprehensive overview of our work and allowing us to have an overview of our progress in completing tasks without having to keep track ourselves manually.Wire Tracker is a tool to help writers and copywriters to identify and track the words they use, those that come up in the content that they write.Wire tracking is a complex task that needs to be done by the best copywriters. They have to be able to understand the audience, present them with a compelling and relevant message, and craft innovative content that will convey the right message to their chosen audience.A wire tracker is a software application that allows you to keep track of your email and social media campaigns. It does this automatically, while you are busy with other tasks. No need to constantly check up on the status of your campaigns. It can also help you manage different strategies for each campaign and send out notifications when specific events occur or trends break out.Wire trackers can be used to automate the publishing process:Section topic: How can I improve my content writing skills?Introduction: A good content writer should be able to write a great first draft for each article they write. They should know their craft and be able to make sure their work will get published, so it does not suffer from editorial errors or lack of impactful elements. They should also be aware about how marketing works,The AI technology is a great way to automate repetitive tasks. For example, in the past, when you had to track all the content created by your staff, you would have to manually count them and check whether they were satisfied with their work. Now with Wire Tracker, you only have to count them and see if they are satisfiedWire Tracker is a tool that will not only automatically analyze all the content in your organization but it will also show how many people contributed to it. It can provide concrete evidence of what works and what needs improvement.Best Wire Tracker is a premium content creation service that offers top quality content for short period of time. It offers the best experience and features to its customers.We should not think of these AI writers as a replacement for human content writers. They just provide assistance to the content writers by getting rid of writer’s block and generating interesting and relevant ideas at scale.AI writing assistants are increasingly getting popular in the workplace. Some companies use them when they need to generate content for a specific topic or niche. While digital agencies use them to generate all kinds of content for their clients, but since it is very convenient, it has become one of the top trending topics in 2018 with businesses spending more money on this type of marketing automation service than ever before! The reason being that AI writing assistants
Main Features of Cable Fault Tester
Main Features of Cable Fault Tester
Cable fault tester is a comprehensive cable fault detection instrument. It can test the cable flashover fault, low resistance grounding, short circuit, cable disconnection, poor contact and other faults. If equipped with an acoustic point detector, it can accurately determine the position of the fault point. It is especially suitable for testing power cables and communication cables of various models and different levels of voltage. The cable fault tester has the following remarkable characteristics: 1. It has complete functions and can test faults safely, quickly and accurately. The instrument adopts low-voltage pulse method and voltage flashover method for detection, which can test various faults of cables, and directly test the flashover and resistance faults of power cables without burning through. If equipped with a sound point meter, the position of the fault point can be measured accurately. 2. Test accuracy. The instrument adopts fast data sampling technology with a reading resolution of 1m. Degree of intelligence. The test results are automatically displayed on the large screen LCD with small and data, and the fault judgment is intuitive. It is also equipped with menu display operation function, without special training for operators. 3. It has the functions of wave opening, parameter storage and call out. Nonvolatile devices are adopted, and the waveform and data are not volatile after shutdown. 4. With dual trace display function. The test waveform of the faulty cable can be compared with the normal waveform, which is conducive to further judgment of the fault. 5. With waveform scaling function. By changing the waveform proportion, the waveform can be expanded for testing. 6. Control the measurement cursor to automatically search along the line and stop automatically at the inflection point of the fault waveform. 7. The position of the double cursor can be changed arbitrarily to directly display the direct distance or relative distance between the fault point and the test point. 8. With printing function. Print and archive the test results.
Composition of Buried Cable Fault Detector
Composition of Buried Cable Fault Detector
The buried cable fault detector consists of rt-2133 cable fault tester host, rt-2132j cable fault locator and rt-2132f cable Pathfinder. The host of rt-2133 cable fault tester is used to measure the nature of cable fault, the total length of the tested cable and the approximate position between the cable fault point and the test end. Rt-2132j cable fault pointing instrument determines the exact location of cable fault point based on the approximate location of cable fault point determined by the host of cable fault tester. For buried cables with unknown trend, cable Pathfinder shall be used to determine the trend of underground cables. If the specific direction of underground cables is known, cable Pathfinder may not be used. The host of rt-2133 cable fault tester can be directly connected with the notebook computer for easy management and operation. The rt-213x complete set of cable fault test instruments can quickly and accurately find the fault points of various cables. It is suitable for factories and mining enterprises, metallurgy, petrochemical systems, power plants, airports, railways, power supply and other departments. Rt-213x cable fault comprehensive tester is widely used to detect low resistance, short circuit, open circuit and various high resistance faults of aluminum core, copper core power cables, high-frequency coaxial cables and local telephone cables with different sections below 35KV. It is a necessary equipment to ensure safe power supply and a powerful assistant for cable production and maintenance workers. 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 locator, cable identifier, 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!
How to Use the Cable Identifier and How to Judge Whether the Cable Is Live
How to Use the Cable Identifier and How to Judge Whether the Cable Is Live
How does the cable identifier judge whether the cable is live? First: why should we judge that the cable is live: as an important instrument of power cable detection instrument, cable identification instrument has been used more and more widely. When there are multiple cables in the cable trench, it is necessary to identify a specific power-off cable, calibrate, move or cut off the cable, and other cables in the cable trench operate live, so the cable identification instrument shall be used for cable identification. Second: easy to use: compared with the cable fault tester, the use of the cable identification instrument is relatively simple. It is easier to use it by reading the instructions. Third: test example: since the cable shielding layer is usually connected to the ground, if other cables are also connected to the public ground in the cable bundle, the black output jack on the generator can be connected to the public ground, The return current is distributed in several cable shielding layers, and the return current is divided into many tributaries, which means that the difference current of the identified cable is large and the useful signal is clear. "Difference" means that the output current and its divided return current are in the same channel. As shown in Figure 4, there are 5 cables in Figure 4. Cable 4 needs to be identified. The "output current" of the cables to be identified is 20A. Assuming that the return current is evenly distributed among the shielding layers of all cables, there should be a return current of 4A in the cable to be measured. The difference in the cable to be identified is: 20A (output) - 4a (return) = 16A (difference). How to use the cable identification instrument I. working method of the cable identification instrument: the transmitter (host) is powered by 220V AC power supply, which is used for the power-off The cable to be identified, plus a fixed period, unipolar DC pulse signal. The output line of the transmitter is connected to the cable core and the grounding point or ground nail. The armor of the cable is disconnected from the earth, and the core is connected to the grounding point or ground nail at the far end. The loop can conduct pulse current, which can be read out by the meter on the receiver of the identifier. The current is determined by the loop resistance, and the loop resistance should be as small as possible. The wiring diagram of the identifier is shown in Figure 2. Note: during field use, if the grounding resistance is too small, the output current of the transmitter will also be large when the output adjustment knob is turned back to zero, and the protection circuit in the transmitter will act (shown as a small fast swing of the meter). At this time, the randomly configured 1 ohm 20W high-power resistor can be connected in series in the transmitter circuit. After the transmitter and receiver start working normally, the voltage induced in the sensor coil is displayed in the receiver header. The pointer swing direction of the header can display the current direction, that is, only the cable with current flowing out, the pointer deflects and swings greatly. This is the cable to be found. For all other cables, only the return current flows, the pointer deflects in the opposite direction and the swing is very small. The output adjustment knob on the receiver can adjust the signal strength. 2、 Wiring mode: 1. Before the test, cut off the tested cable, and the surrounding environment shall be in a safe state. 2. The generator is connected with the tested cable, and the red clip is connected with one or several cores of the identified cable. Connect the black clip to the ground nail. 3. Connect the core wire at the far end of the cable to the ground nail. 4. Disconnect the armor at both ends of the cable from the ground wire. 5. Plug the power cord into the power outlet. 3、 Identify the cable through the loop test. 1. In order to ensure the normal use of the instrument, pay attention to setting the test loop. 2. Connect the red output jack to the core of the cable to be identified, connect the black output jack to the ground, and connect the cable core to the ground at the far end. As shown in Figure 3, 3. The output current flows to the far end in the direction of the arrow in the cable, and all cores of the identified cable can be connected together through the earth return generator to obtain a clearer signal.
Pulse Flashover Method for Fault Detection of High Voltage Cables
Pulse Flashover Method for Fault Detection of High Voltage Cables
Cable has a very important application scenario in our daily life. It can be said that we can't live without cable. In order to ensure the normal use of the cable, it is necessary to regularly detect and maintain the cable. In case of cable failure, the fault point shall be found out in time for maintenance. There are many cable fault maintenance methods. Today, I mainly introduce one of the high-voltage cable fault detection methods, pulse flashover method. For high resistance fault, due to the large resistance at the fault point, the reflection coefficient at this point is very small or almost equal to zero. When measured by low-voltage pulse method, the reflected pulse amplitude at the fault point is very small or there is no reflection, so the instrument can not distinguish it. There are two common high voltage flashover measurement methods, namely DC high voltage flashover measurement method (direct flashover method for short) and impulse high voltage flashover method (impulse flashover method for short). 1、 DC high voltage flashover method (referred to as direct flashover method) when the fault resistance is very high and a stable resistance channel has not been formed, the gradually increased DC voltage can be applied to the tested cable. After reaching a certain voltage value, the fault point is preferably broken down to form flashover. The flashover arc is used to form a short-circuit reflection on the added voltage, and the reflected echo is formed by a high resistance source at the input end to form an open circuit reflection. In this way, the voltage will be reflected many times between the input and the fault point until the energy is exhausted. 2、 Impulse high voltage flashover method (impulse flashover method for short) when the fault resistance is reduced and a stable resistance channel is formed, the DC high voltage cannot be added due to the limitation of equipment capacity. At this time, it is necessary to use impulse voltage test. The DC high voltage charges the cable through the ball gap until breakdown, and still generates short-circuit reflection with the flashover arc formed by it. The measuring inductance L shall be added at the cable input end to read the echo. The radio wave is reflected by short circuit at the fault point and l at the input end, and multiple reflections will be formed during this period. Due to the self induction phenomenon of inductance L, it begins to show open circuit reflection due to the current blocking effect of L, and shows short-circuit reflection after a certain time with the increase of current. The whole circuit consists of capacitor C and inductance L, which constitutes a large process of L-C discharge. Therefore, the wave process at the line input is a nearly attenuated cosine curve superimposed with fast pulse multiple reflection wave. 3、 High voltage cable fault detector is generally used. High voltage cable fault is high resistance fault, and high voltage flashover method is used to measure the distance of fault point. This method uses st-330b cable fault locator as experimental equipment. 1. Wiring mode: firstly, complete the wiring of high-voltage flashover as required; Then, connect the sampler with the ranging host with a double clamp test line, and then place the sampler next to the grounding wire of the high-voltage capacitor. 2. Equipment operation (1) start up, select the sampling method as flashover, the pulse width is the default, the cable type is the physical type, and the reading accuracy is the default. (2) Use the high-voltage equipment to discharge the cable, and then click the orange sampling button on the right to start sampling until the waveform is collected. Press the sampling key again to stop sampling. (3) Study the waveform, move the vernier ruler to the starting point and ending point of a waveform, read the waveform, and the distance of the fault point will be automatically measured in the upper left corner.
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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.
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