NOYAFA's Multi Function Cable Tracker

What Is The Diference From The NF-8601W And The NF-8601S

In Noyafa, we belive that NF-8601 family is the top grade with their features, though implementing different technology, NF-8601 family can meet every requirement from customers in cable testing and tracking field. Noyafa NF-8601 cable tracker: The basic item for the NF-8601 family, it can meet customer requirements from every aspect such like cable length testing, PoE testing, Ping testing, Continuity testing etc. Noyafa NF-8601W cable tracker: Upgraded from NF-8601 with 8 remote terminals, customers can realize their quick checking/ tracking for cable matches remotely, thus improving the efficiency for cable tracking. Noyafa NF-8601S cable tracker: Upgraded from NF-8601, by implementing TDR technology, NF-8601S can provide more accurate testing result for cable length testing. The main difference between NF-8601 and NF-8601W is NF-8601W get 8 remote terminals while NF-8601 only get one, so we would like to provide the comparasion table for NF-8601W VS NF-8601S as below: For any more inf about Noyafa and our product, customers are always welcome to contact us, if there is some other items customers want to know the comparasion between, pls let us know by email to sale08@noyafa.com

What Are the Common Faults and Discrimination Methods of Cable Fault Tester

1ã Cable fault type power cable fault is mainly due to mechanical damage, insulation aging, low construction quality, overvoltage, etc. The commonly used cables are cross-linked ethylene, non dripping oil type, oil immersed paper type, polyvinyl chloride and unknown type. According to the nature of cable fault, they can be divided into low resistance grounding or short circuit fault, high resistance grounding or short circuit fault, disconnection fault, disconnection and grounding fault and flashover fault. 2ã Firstly, we need a megger to measure the insulation resistance of each phase, and judge the fault type according to different insulation resistance values. 1. When we measure that the insulation resistance of the cable to the ground is lower than 100k Î©, it is a low resistance grounding fault. 2. When we measure that the insulation resistance of the cable to the ground deviates from the normal value or is higher than 100k Î©, it is a high-voltage cable fault. 3. When the ground resistance of the measuring cable is high or normal, conduct multiple tests on the conductor to check whether there is a wire break. If there is a wire break fault. 4. When the conductor of each core or multiple cores of the measuring cable is discontinuous, and then after multiple core to ground measurement, judge which type of the above three faults. 5. Flashover fault basically occurs in preventive voltage withstand test, cable terminal and middle joint. Sometimes flashover occurs many times, but the interval is a few seconds or minutes. 3ã Cable fault tester to find out cable fault methods: 1. With high-voltage equipment, it has the traditional impact high-voltage flashover method and low-voltage pulse method. 2. 2. Any high resistance fault presents simple waveform characteristics similar to low voltage pulse short circuit fault, which is very easy to interpret. 3. The cable fault tester finds the fault point through four main parts: cable fault location host, locator, Pathfinder and high-voltage signal generator.

Introduction to Cable Fault Locator

The basic function of cable fault locator is in the power industry and some industries using cables, especially in some complex power systems. It is very difficult to find the fault of underground cable lines. However, in this regard, the continuous emergence of equipment with various functions and simple operation can not only reduce the high cost of fault detection, but also reduce the inevitable long-time power failure when difficult to find (cable fault locator) cable fault, which brings a lot of convenience to troubleshooting. Direct buried cable fault detection in underground direct buried cable and underground residential power distribution (URD) system is a very time-consuming thing, and will cause very inconvenient power failure to users. Some technologies may also damage the cable. For some equipment with high technical requirements, its operation is more complex, and only operators with strict training can use it, which brings a lot of inconvenience to the popularization and application of this kind of technical equipment. Therefore, the selection of appropriate technology depends partly on the knowledge of cable system design understood by the designer of fault detector, and also partly on the professional and technical knowledge of equipment and operators in this regard. With appropriate equipment and professional technology working on site, it is the first step to detect faults quickly and effectively. Hammering (pulse) method many power companies use hammering (pulse) method. This technique is effective in detecting high resistance faults in a simple (cable fault locator) cable system. The hammering method includes using a pulse or impulse voltage to impact the power cut cable. When an effective high voltage pulse strikes the fault area, the fault point flashover and produces a hammering sound that can be heard by the operator along the cable surface. However, detecting cable faults often requires several hammers, and repeated shocks may damage the cable. 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!

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What Are the Test Steps for Cable Failure

The detection of cable fault generally goes through four steps: diagnosis, ranging, path finding and fixed point. 1. Diagnose the nature of cable fault, that is, determine the type and severity of fault, so that testers can suit the remedy to the case and select appropriate cable fault location and fixed-point methods. Measure the fault resistance with a megger and multimeter to determine whether the cable fault is high resistance or low resistance; Flashover or closed fault; Whether it is grounding, short circuit, disconnection, or a mixture of them; Is it single-phase, two-phase or three-phase fault. 2. Ranging cable fault location, also known as rough measurement, uses instruments to determine the fault distance at one end of the cable. The common fault location methods on the site include classical bridge method and modern traveling wave method. Use jcd-971 cable fault locator or cd-71 cable fault locator. 3. Use pd2000 cable path identifier or cd-12 / 22 cable path identifier produced by Zibo Electric Co., Ltd. for path finding. 4. Fault location acoustic magnetic synchronization method: use cd-81 cable fault locator to synchronize with the discharged electromagnetic signal and digitally sample the sound signal, The sound waveform at the moment of discharge is displayed on the LCD screen. The waveform can be maintained continuously for the operator to distinguish carefully, avoiding the disadvantage of transient sound. Moreover, the actual discharge waveform is obviously different from the surrounding noise. More importantly, the sound waveforms of multiple discharges are very similar. When the sound waveforms of multiple discharges are observed to be the same, It can be clearly judged that the discharge sound has been collected. Because the response range of acoustic measurement method is generally very small, when the discharge sound is heard, it is very close to the fault point, generally not more than 5m, or even within 1-2m

Simple Withstand Voltage Tester, Hipot Tester

Simple withstand voltage tester, hipot testerKey words: simple withstand voltage testerThe device can conveniently measure the back pressure of triode, diode, voltage stabilizing tube, thyristor, etc; Capacitor withstand voltage; Resistance greater than 10m Î©. The output voltage is continuously adjustable up to 1400v. The working principle and measuring circuit are shown in Figure 1. The 6V of transformer T is rectified by d5 and filtered by C3 to provide the base voltage of regulating tube Q. Adjust w to control the conduction degree of Q. That is, control the voltage of collector point a to change between 4v-1400v. The 500V voltage output by the high-voltage winding is rectified by the voltage doubling rectifier circuit composed of C1 and D1-D4, and the C2 filter outputs 1400v high voltage. During the test, the tested device is connected between a and B. When the w resistance is reduced, the base potential of Q decreases and the potential of point a increases. Until the milliammeter indicates the rated reverse current of the measured tube (the measured low-power tube is less than 0.1mA, and the high-power tube is less than 1mA). At this time, the voltage value indicated by the voltmeter is the back voltage under the reverse current. When measuring high resistance, connect the resistance between a and B, divide the voltmeter reading by the milliammeter reading, unit: Î© = V / A. Each time it is used up, adjust w to the maximum to return the output voltage to the low point of 4V. Component selection Q requires that when ic = 1a, Î² â¥ 5, bvcbo â¥ 1500V, reverse leakage current

Cable Tester Software for Cable Installation, Repair& Replacement

The introduction of cable testerA cable tester is a person who tests all kinds of cables to make sure that they are safe and can be used with any kind of equipment.When computers first started being used for tasks, people thought they were very difficult to use. One of the main reasons for this is because the computers didn't have common vocabulary, which meant that users had to learn new terminology and concept at a very fast pace. Today, however, technology has changed so much that it's no longer necessary for users to learn new terminology - instead we can just speak with a computer and it will do all the work for us. The same applies to humans as well: we don't have to talk with someone else anymore!Tips for cable testerTo get a job in the cable industry, you need to pass certain tests. The way you write about this topic is equally important as the actual test itself.How to use cable tester?A cable tester makes sure that only the cables are connected to the right ports on a computer. On the other hand, an AI writer can make sure that a given section has all necessary information.For example, an AI writer can analyze how many people are using a certain online platform and which sections are most popular among them. The AI writer can then take this information and create content for this area in order to keep it relevant and updated.The specifications of cable testerThe cable tester is one of the most important tools in our work. Even though we are not directly responsible for it, we still want to follow some of the specifications that are defined for it. We also need to know how to test cables properly so that we don't damage our equipment and we get a high quality result.The product instructions of cable testerThe "product instructions" are the most important part of the product manual. The instructions tell customers how to use and maintain the product.The application of cable testerThe application of cable tester is a good example of AI that gets the job done. It can be used to identify weak points and gives you the opportunity to improve things.

Basic Knowledge of Cable Installation

Whether the cable is installed correctly or not is directly related to our personal safety, so it is very important to learn the correct cable installation method. First of all, we need to understand the precautions for cable installation: first, when the mining cable is placed in parallel with the heating pipeline, it shall be connected with a distance of 2m, and when interleaved, it shall be connected with a distance of 0.5m. Second, when the cable is placed in parallel or interleaved with other pipelines, it shall be connected with a distance of 0.5m. 3ã When the cable is directly buried, the direct burial depth of 1-35kV cable shall not be less than 0.7m. IV. when the cables of 10kV and below are placed in parallel, the clear distance between each other shall not be less than 0.1M, 10-35kV shall not be less than 0.25m, and the distance during interleaving shall not be less than 0.5m. V. the minimum bending radius of the cable shall not be less than 15d for multi-core cable and 20d for single core cable (D is the outer diameter of the cable). 6ã Discussion on 6kV and above cables. A. When placing the cable terminal, the semi-conductive barrier layer must be stripped off. The insulation shall not be damaged during operation. Knife marks and the environment with high and low resistance shall be prevented. If necessary, it shall be polished with sandpaper; The end of the barrier shall be flat, and the graphite layer (carbon particles) shall be broken and cleaned. B. The copper barrier and steel armor at the end of plastic insulated cable must be well grounded, and this criterion should also be observed for short routes to prevent electromotive force at the end of steel armor during three-phase unbalanced operation, even ignition and burning of sheath. Tinned braided copper wire shall be adopted for grounding outgoing line. Soldering iron shall be used for soldering when it is adjacent to cable copper strip, and blowtorch shall not be used for sealing welding to avoid burning insulation. C. The three-phase copper barrier shall be connected with the ground wire respectively. The detailed barrier ground wire and steel armor ground wire shall be led out separately and insulated from each other. The position of the welding ground wire shall be as low as possible. 7ã Fundamental requirements for cable terminal and center discussion: A. excellent conductor connection; b. The insulation is reliable. It is recommended to adopt radiation crosslinked heat shrinkable silicone rubber insulation material; c. Excellent sealing; d. Sufficient machine strength can comply with various operation conditions. 8ã The cable end must be waterproof and corroded by other corrosive materials to prevent breakdown caused by aging of insulation layer caused by water tree. 9ã Crane or forklift must be used for cable loading and unloading to prevent horizontal transportation and placement. Cable car must be used for large cable placement to avoid external force damage to the cable or scratch the insulation layer due to manual drag. 10ã If the cable cannot be laid in real time for some reason, it shall be stored in a dry place to prevent sunlight exposure, water inflow at the cable end, etc. Secondly, it is also a link that can not be underestimated, that is, it is necessary to conduct acceptance inspection on the installed cables to see if there are omissions. 1ã First, the user shall check and accept the cable to see if it is damaged, and the construction personnel shall test the resistance and insulation resistance of each cable with a multimeter to confirm whether the cable resistance and insulation are normal, and record it. 2ã The supervision personnel of the user are invited to accept the whole laying. The main acceptance items are: a) whether the insulation layer is laid smoothly; B) If reflective film is installed, check whether the laying of reflective film is smooth; C) Whether the barbed wire mesh is installed smoothly and fixed. D) After the heating cable is energized, check whether the surface temperature of the cable has increased significantly, and sign on the acceptance sheet for confirmation.

Cable Tracker for Live TV, Cable/Satellite Services, Streaming

The introduction of cable trackerA cable tracker is a device used for broadcasting TV signals on various cable systems. It has the ability to detect if there is an incoming signal, and then start broadcasting it.Tips for cable trackerMost of the cable TV companies are aware of the importance of attracting viewers to their show. While it's not unusual to see ads for cable television stations and channels running at top slots, what is uncommon is to see advertisements from a different perspective.How to use cable tracker?Cable tracker is a common piece of software used by people to find cable TV channels. It helps you identify different cable channels based on recordings you have also found online.The specifications of cable trackerCable tracker is a device used in cable TV to obtain information about the transmission of a signal from the cable.The product instructions of cable trackerWe should not just buy a cable or satellite tracker but understand what is it to use it in the most effective way.The application of cable trackerCable trackers are a form of instant communication that can connect you with your business partners and clients. By using this tool you can find out about their jobs, responsibilities, location and social media account holders.

How Much Do You Know About the Cable Fault Tester

In recent years, China's computer technology and electronic technology are developing rapidly, so the product performance of many industries has been continuously improved. The cable fault tester is also like this. Its functions are more reliable and rich, and its service life has been improved to a certain extent. Today we are going to talk about the new highlights of the cable fault detector. 1ã New intelligent modules are added to the cable fault test: new sensors such as optical fiber sensors, polymer sensors and biosensors continue to appear and will develop rapidly. 2ã The emergence of new cable fault test fieldbus structure: expand the self diagnosis function of cable fault test instrument and facilitate maintenance. The connection of cable test system is more reliable and simple. Therefore, the installation cost is greatly reduced and the control scale is variable. 3ã Function integration of electronic cable test system: it is more closely combined with computer, power electronic devices and strong current control, and the continuous control and intermittent control are used at the same time. In the selection of cable fault tester, such products can be scientifically selected according to the cable characteristics of their industry, and the most suitable tester combination can be selected, which can greatly improve the work efficiency and avoid unnecessary waste of funds. At present, the cable fault testers used by power departments are basically designed and produced based on the principle of impulse flash method; In terms of its principle, it is most appropriate to solve the high resistance leakage and high resistance flashover faults. At this time, when the fault point is discharged, the voltage is high and the sound is loud, so it is easy to point on the ground. At present, there is only one solution in the world, but such faults are not very common. Use advantages: 1. Complete functions, safe, rapid and accurate test failure. 2. The instrument adopts low-voltage pulse method and high-voltage flashover method to detect various cable faults. It can directly test the flashover and high 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. High test accuracy. The instrument adopts high-speed data sampling technology, with reading resolution of 1m and high 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 fault cable fault tester can be compared with the normal waveform, which is conducive to further judgment of the fault. 5. With waveform scaling function. Changing the waveform proportion can expand the waveform for accurate test. 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.