NOYAFA's Poe-tester-gen2 Manual

NOYAFA's Poe-tester-gen2 Manual

2021-10-26
NOYAFA
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poe-tester-gen2 manual is a sought-after product in SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED. It is designed to impress people all over the world. Its look combines the complex design theory and hands-on knowledge of our designers. With a team of highly qualified experts and state-of-the-art equipment, we promise the product has the advantages of stability, reliability, and durability. Our QC team is well-equipped to perform the indispensable tests and ensure the defective rate is lower than the average rate in the international market.Pioneering in the field through the innovative start and continuous growth, our brand - NOYAFA is becoming a faster and smarter global brand of the future. Products under this brand have brought rich profit and repayment for our customers and partners. Years past, we have established lasting relationships with, and have achieved the highest satisfaction for these groups.We carry out regular training to our service team to enrich their knowledge and understanding of the products, the production process, the production technology, and the industry dynamics in order to solve customer's question in a timely and effective manner. We have a strong global logistics distribution network, enabling the fast and safe delivery of products at Best Cable Tester Supplier in China _ Noyafa.
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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!
Top 5 Best Wire Tracker
Top 5 Best Wire Tracker
With the right software, you can be sure that your content is safe.Data mining and artificial intelligence are the buzzwords of today's business. Salespeople are using these technologies to generate leads and to understand them better. But there is a big gap between the salespeople' needs and what the data mining tools can provide them. Most of these tools are geared towards one specific problem: customer segmentation. An intelligent sales assistant can help you optimize your data mining efforts by generating leads for a specific customer group based on attributes such as gender, age, location or some other criteria.The problem with many wire tracking software is that they are not as highly customisable as you would like them to be. They are also more prone to failure and censorship than other more advanced tools.This article tries to provide a comprehensive guide on what makes the best free wire tracker software for web designers, so that you can choose the one which will suit your needs.The best way to effectively track your content is by writing it on a wire.The best way to ensure that you capture the most important information about your clients is with a wire tracker.Wire trackers are used when you need to know what your customers are talking about on social networks, blogs, forums and so on. These applications can help you get insights into how people use your products. They can also be used for fraud prevention when installing or updating software on computers and smartphones.The best way to keep in touch with customers is through reviews that they leave on relevant websites. All these situations require some form of communication between the service provider and its users, but what if those who use those services are not necessarily in control of their own data? What if they don't have access to theirThe best wire tracker is the one that you are most comfortable with. It should be easy to use, fast and user-friendly.It is essential for salespeople to be able to track their prospects and clients. This has been a challenge for many years. Here we list the best tools available for this purpose.It is a tool to track all the email that you have sent to your clients.If you want to go viral, then you need to reach the right audience. This is where the best trackers come handy; they can use them to create a lot of targeted landing pages for your company's content.A wire tracker is a tool that can be used to track the progress of a project. The main purpose of this tool is to keep clients updated on all the communication between the client and the advertising agency. The Wire Tracker provides clients with an overview of every email, call, meeting and other interaction they have had with its associated team.Free wire tracker software is a useful tool to help you track the number of email messages sent to your inbox.It works by tracking all the emails that you have received in a particular period of time. It helps you to understand the level of engagement that your users have with your websites, apps and products.In-depth guide to the best free wire tracker software, including tips on what to look for, pros and cons of each one.There are a number of different free wire tracker software on the market today. But what makes a good one?Why do we need to know about the best free wire tracker software? How can we determine which is the best for us?What are some of the advantages of using a wire tracker software instead of a paid one? What makes them unique and which ones should you choose? And finally, if you would like to receive more information about this topic, we have put together our in-depth guide.Email to wiretracker is one of the most overlooked features that can help you get your message out in a timely fashion. It’s a great way to curate your list of prospects, track activity on social media, and maximize the efficiency of your marketing campaign.The best wire tracker is a simple and versatile tool that allows you to automate the content creation process.Wire tracker is used by writers to create content for their clients. It takes the text from an email, word processor or other media file and automatically generates a web page, blog post, tweet or any other type of content. Unlike Google Docs, it does not require any extra software on your computer. You can use it in one click without any technical knowledge. With Wire Tracker you can create all kinds of content with just a few clicks.
Negative Sequence Current and Negative Sequence Voltage Components Appear in Cable Fault Tester
Negative Sequence Current and Negative Sequence Voltage Components Appear in Cable Fault Tester
Relays used in the circuits of relay protection devices and electrical automatic devices are generally made of electromagnetic, inductive, electrodynamic and magnetoelectric principles. In recent years, there have been magnetoelectric devices using rectified current, magnetic relays with saturated inductance coils and electronic relays, and relays using semiconductors are being studied. The purpose of studying and adopting these new principles of relays is to simplify the structure of relays, improve their reliability and improve their parameters. Use indirect methods to indicate that there is a fault or improper working state in the power system. For example, this kind of relay has the ability to react with the generation of gas, the generation of heat, the increase of pressure, etc. The relay protection device must have the function of correctly distinguishing whether the protected element is in normal operation state or has a fault, whether it is a fault in the protection area or a fault outside the protection area. In order to realize this function, the protection device needs to be composed based on the characteristics of changes in electrical physical quantities before and after power system failure. The three-phase / six phase relay protection tester is developed by using Zui new digital technology, high-precision electronic devices, microcomputer system and new structure of line and cable fault tester. It can independently complete the device test in professional fields such as microcomputer protection, relay protection, excitation, measurement, cable fault tester and fault recording. It is widely used in scientific research, production and electrical test sites in electric power, petrochemical, metallurgy, railway, aviation, military and other industries. After power system failure, the main characteristics of power frequency electrical quantity change are: (1) current increase. In case of short circuit, the current on the electrical equipment and transmission line between the fault point and the power supply will increase from the load current to greatly exceed the load current. (2) Voltage drop. In case of phase to phase short circuit and grounding short circuit faults, the phase to phase voltage or phase voltage value of each point of the system decreases, and the closer to the short circuit point, the lower the voltage. (3) The phase angle between current and voltage changes. During normal operation, the phase angle between current and voltage is the power factor angle of load, generally about 20. In case of three-phase short circuit, the phase angle between current and voltage of cable fault tester is determined by the impedance angle of the line, generally 60 85. In case of three-phase short circuit in the opposite direction of protection, the phase angle between current and voltage is 180 (60 85). (4) The measured impedance changes. Measuring impedance is the ratio of voltage and current at the measuring point (protection installation). During normal operation, the measured impedance is load impedance; In case of metal short circuit, the measured impedance changes to line impedance. After fault, the measured impedance decreases significantly and the impedance angle increases. Negative sequence current and negative sequence voltage components appear; In case of single-phase grounding, negative sequence and zero sequence current and voltage components appear. These components do not appear during normal operation. The relay protection of various principles can be formed by using the change of electrical quantity during short-circuit fault.
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
Possible Causes of Cable Failure
Possible Causes of Cable Failure
With the vigorous promotion of China's power industry, more and more local, underground, overhead and other cables! At the same time, due to long-term erosion, the cable also needs regular maintenance! Today, I will give you a simple analysis of possible cable faults and corresponding maintenance methods. You can have a good understanding. In general, our common cable faults include short circuit to ground, phase to phase short circuit, etc. this fault mainly occurs on buried cables. The main symptoms are normal in sunny days and short circuit in rainy days. So what should I do about this fault? The solution is to recommend the use of cable fault tester produced by formal enterprises. The low-voltage pulse method is adopted. The host plus cable two phases. The host transmits a pulse, and then through the feedback waveform, the fault point can be found accurately and repaired or replaced! 1、 In case of failure, the first-aid repair personnel shall prepare the following materials and tools: 1. One set of cable fault tester and one set of cable identification instrument. 2. The faulty cable shall be the same as the cable, cable head and crimping pipe of the same specification. 3. Two small ropes, two large ropes and four sets of climbing tools. 4. Check two groups of electric pens, safety signs and grounding sealing wires. 5. Lighting tools, communication tools, wire cutting scissors, wire binding, iron wire, saw bow, phase sequence belt and blowtorch. 6. Power generation equipment. 7. Multimeter, insulated megger, anti-aging wire, wire nose, crimping pliers, adhesive tape, sandpaper and round file. 2、 The emergency repair division and process can be carried out in groups at the same time. 1. Cut off the fault point at the first time according to the dispatching command. 2. Inform Baodong maintenance workshop according to the fault conditions. 3. Prepare materials and tools and ship spare transformers. 4. Attention shall be paid to site safety and phase sequence of cable terminal connection during recovery. 3、 Note 1. The copper shielding layer is wound with insulating tape, which is used to prevent the copper shielding layer from being loose and temporarily fixed during the fabrication of cable terminal head. It shall be removed when heat shrinkable stress tube. 2. The electric stress control tube (stress tube for short) is sleeved at the fracture of the shielding layer to disperse the electric field stress (power line) at the fracture and ensure the reliable operation of the cable. 3. Safety protection shall be provided during voltage withstand test. 4. When using lighting lamps near the railway line, pay attention to the direction and angle to avoid disturbing the driving. The requirements shall not be reduced even under poor site working conditions; The division of labor shall be clear, and the preventive measures shall be arranged in detail. A closed fence or fence shall be installed at the test site; And marked stop, high voltage danger! Words and signs; It shall be hung outwards and protective measures shall be sent, especially when the other end of the cable needs to be protected and the communication must be kept open to prevent an emergency. The test equipment and wiring shall meet the requirements and the operation shall be standardized; During the test, attention shall be paid, and the operator shall stand on the insulating pad; At the end of line change or test, disconnect the test power supply, discharge it, and ground the high-voltage part of high-voltage equipment; In the high voltage test, the cable shall be discharged to the ground several times before touching the cable, and shall be short circuited to the ground at the end of each test or at the end of the test.
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.
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 ℃
Best Cable Tracker
Best Cable Tracker
The introduction of cable trackerCable TV is the future, and we are living in a world where people will be able to watch their favorite programs anywhere, anytime.Tips for cable trackerIn TV industry, one of the most important tasks is to find out who and what are the people watching your shows. It is really hard to do this job.How to use cable tracker?Cable trackers are part of a live communications system. While they can be used in a variety of different situations, there is one thing that they all have in common: they can help organizations to detect disconnected or out-of-sync communication links between people and devices.The specifications of cable trackerWith cable tracker, you can track the number of subscribers on a cable TV network. This way, you can know how much money your client is making from their cable channels.The product instructions of cable trackerUSA has some of the best-known cable TV providers. There are 18 channels in total, including one free channel. Most programs are broadcasted on satellite or cable. The main purpose of these channels is to get traffic to the advertisers' websites and for this purpose, they have to be reliable and functional. Most companies use a technical device known as a television tuner to receive the channels and they need their instructions in order to be able to control it, tune it or change its settings correctly. It is therefore necessary that if you want your company's website to get noticed by potential clients, you need reliable product instructions which are accurate enough so that people can understand them immediately and avoid any confusion regarding their products' functions.Most of the products have numerous settings and options, so there is no wayThe application of cable trackerA cable tracker is a device that allows us to identify and monitor our cable channels.
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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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