Guide to Buy Cat7 Cable Tester in NOYAFA

Guide to Buy Cat7 Cable Tester in NOYAFA

2021-10-11
NOYAFA
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SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED develops cat7 cable tester to enrich the product mix and meet customers' varied needs. The design is innovation oriented, the manufacturing is quality focused, and the technology is world advanced. All this enables the product to be quality high, user friendly, and performance excellent. Its current performance has been tested by the third parties. It is ready to be tested by users and we are ready to update it, based on the continued R&D and the successive input. When it comes to globalization, we think highly of the development of NOYAFA. We have developed a customer-base marketing system including search engine optimization, content marketing, website development, and social media marketing. Through these methods, we constantly make interactions with our customers and maintain a consistent brand image.At Best Cable Tester Supplier in China _ Noyafa, we show a strong passion to ensure a great customer service by offering various shipping ways for cat7 cable tester, which has been highly praised.
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Do You Understand the Function of Cable Fault Tester
Do You Understand the Function of Cable Fault Tester
In the whole process of application of high-voltage wires and cables, if a common fault occurs, it will lead to the final disconnection of the power supply system. It is necessary to carry out inspection immediately and quickly find the common fault point. The cable fault tester must be used. In this paper, we will briefly introduce in detail the functions of the cable fault tester. System software composition of cable fault tester: the cable fault tester is composed of test host, relative path signal generator, relative path signal receiver and detector. The cable fault tester includes integrated computer, bottom pressure single pulse generation and data processing methods to detect the spacing of common faults, and can also be used to accurately measure the length of cable and the rapid propagation of electromagnetic wave in cable. The relative path signal generator generates intermittent sinusoidal waveform data signals with a frequency of 30kHz and a force of 30V to find the relative path of the cable. The relative path signal receiver is used to receive the relative path data signal to search the cable route and estimate the depth of cable laying. The detector is used to accurately locate common fault points. Technical characteristics of cable fault tester: 1. Fault test system software: it can detect various common faults of various wires and cables, as well as the common faults of lead and short circuit faults of coaxial output power cables and local call cables. It can measure the propagation rate of electromagnetic waves in all known cable wires. The detection distance shall not be less than 16km 2. Relative path signal generator: output data signal frequency 30kHz, oscillation method, intermittent 3. Detector: detection sensitivity: 50 & omega; The video signal of the internal resistance outputs a 300Hz data signal, and the designated instrument inputs the data signal no more than 10&mu under the condition that the output remains 2V and the signal-to-noise ratio is better than 20:1; v. Input impedance: not less than 1.2k & omega;. Fault test method: the fault test is generally divided into the following processes: first find out the basic situation of common fault cable: measure the grounding resistance of common fault cable with megger and multimeter, and accurately measure the total length of cable with bottom voltage single pulse, whether there is disconnection, short circuit fault, etc. Second, according to the details of common faults, determine the appropriate detection methods and accurately measure the cable fault spacing. Generally, people set the common disconnection faults and resistance measurements at 100 & omega; The following cable faults are called low resistance (pilot) common faults, which are detected by bottom voltage single pulse method, and other common faults are detected by impulse flash method or direct flash method. Third, detect the relative path and depth of cable laying around common fault points. Identify the exact location of common fault points. Disconnect all connections between the cable head end and the terminal equipment head before testing. The control panel of the detection system software is equipped with two buttons for inputting amplitude and offset, which are respectively used to adjust the left and right parts of the input data signal strength and wave pattern for the next sampling.
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
How to Use a High Voltage Detector Tester: 5 Key Tips You Should Know
Any meter that can check voltage, current and resistance is called a multimeter. To prove that the electrical testing is new to us, we often ask our residents if they can teach an apprentice how to properly use a voltmeter or multimeter. Once you understand how to use a multimeter correctly, you can proceed to troubleshooting and troubleshooting electrical problems, checking sockets, checking continuity and more.Proximity to the voltage detector is a good first test, followed by direct contact with the meter. The voltage is relative to the two points at which it is measured by the meter, so a voltmeter must be connected to two points in the circuit to get a good measurement.As part of the test, the 70E requires a conductor circuit with phase phase phase and phase to ground. Note that this requirement does not apply to medium to high voltage systems, so proximity voltage detectors are the preferred test method.Non-contact voltage testers are the safest way to ensure that the current touches the wire. They light up and make no noise, but they can get very close to hot electric wires, especially those covered with plastic insulation.Select a low or high voltage level to verify the presence of a voltage contact with an energy-rich conductor. If you hear continuous chirping or see a series of flashes, confirm that the tester has detected voltage.Test your battery at every stage and measure your readings to optimum voltage. These tips lead to the use of a test circuit that you can see when working with your RV batteries.Some manufacturers of voltage sniffers recommend holding the tester with bare hands and keeping it close to the body. To use a two-pronged voltage tester, place a cable in a metal box containing the ground wire and a solid copper wire, and the other cable you are testing, but never use a two-pronged multimeter. The measurement of the signal allows calculations without the stress of a CT socket tester or circuit analyzer (practical socket voltage testers are ideal for checking voltages and showing if a socket wire is missing a wire, such as the grounding wire).Like any technology or device, your digital multimeter has a lifetime. A visual inspection can be carried out to check and ensure that your multimeter is working properly. Inspection of light must be carried out with electrical energy Floor inspection facilitates the repair of motor vehicles Inspection of a lamp is simple and inexpensive, especially for 12 volt vehicles.These multimeters have the same properties as a voltmeter and check current, resistance and continuity. At the top of the charts in the best-selling multimeter category, Kaiweets Digital Multimeter will do the work for you. It features accurate measurements of AC and DC voltage, AC / DC current and resistance, continuity, frequency, capacitance, diodes, liquid temperature, battery control and shutdown measures.If you do not have a multimeter, you can use a voltage detector instead of a voltmeter or a continuity test instead of an ohmmeter. User-friendliness has little to do with the multimeter that holds your readings for you, as you cannot see what you are working with on the screen. Use it instead to tell you if the white or black cable is in the inverted socket, or if the underground cable is inserted into the box or plugged into the socket.As soon as you receive a reading from your meter, check if it has a switch called DC. Be sure to follow the instructions to get the maximum amount of current that the meter can handle. To see how this works, let's look at a few examples to show how the meter is used.Use a low-voltage proximity tester to measure the circuit to be tested when the low-impedance voltage tester is connected. Figure 2 illustrates the final reading of the voltage displayed by the proximity testers and the voltage displayed by the tester. The tester measures the voltage (Figure 3) and if it is several volts above or below, it indicates the presence of a voltage, and if there is a voltage in the circuit, a power supply must be found before moving on.If the circuit voltage is lower than normal and the current is high, a harmful spark can occur the moment the last meter probe connection is established. In the multimeter version, the zero ohm resistance is tested with the probe tip (red) and the probe is plugged into the red current measuring socket. When the voltage is measured in this mode (red LED plugged into red V socket) and many mega ohm resistors are tested from the probe tip, the voltmeter is designed to be close to infinite resistance, so that it does not draw any significant current from the circuit's tested circuit.We used the voltage sniffer on a metallic light in a kitchen or sink to check if it was grounded. When the luminaire is not grounded, a hot wire comes into contact with it and the wire will supply the metal with energy, making an electric shock a hazard. The voltage sniffer found no power cables grounded in the metal wire.When using a voltage detector the following checks should be carried out: Check for optical damage, third party labels and indicate the date of the next routine inspection. Check whether the maximum permitted voltage range is can be used depending on the voltage rate of the power supply system (in mV / hV) (Note: 2 test ranges are possible with KP-Test 5 Dual Voltage Detektors as indicated by the number of green LEDs ). The voltage ranges available, the ATEX approval, the choice of tip and antenna shape vary according to the application of the volt stick, but the right product ensures safe work on site.I call it a voltage sniffer but the technical name for it is a capacitive voltage sensor. Inspectors use voltage sniffers for a few different things, so it's important to have one or two spare parts ready. Voltage sniffers use black magic to determine whether wires are alive or not, and they are 100% reliable at all times.
Dry Goods Sharing Brought by Power Cable Pathfinder Manufacturers
Dry Goods Sharing Brought by Power Cable Pathfinder Manufacturers
It is generally believed that wear and aging caused by daily time accumulation and sudden faults caused by external factors will affect the use of cables. Both of them will cause fault trip, interrupt power supply operation, and cause power grid paralysis in serious cases. Among these factors, the time accumulation factor can be controlled artificially, resulting in a very small probability of failure, while the external environmental meteorological factors can not be controlled, resulting in a very high probability of failure and great destructive power. Below, the manufacturer of power cable Pathfinder summarizes this problem. 1、 Lightning strike power cable Pathfinder manufacturers believe that lightning weather is common in rainy season and has great randomness. A large number of transmission lines erected in the field have the characteristics of large tower span and large height difference, which makes the lightning resistance level of the line relatively poor and vulnerable to lightning. In harsh terrain, there are many single circuit lines, and there is no shielding and shunt protection provided by parallel lines, which increases the incidence of lightning accidents. Lightning trip accounts for the largest proportion of transmission line faults, and the lower the voltage level, the higher the probability of lightning fault. In order to reduce the probability of lightning accidents on transmission lines, it is necessary to prevent flashover, arc building, direct strike and line interruption. The following protective measures shall be taken: 1. Erect lightning conductor. 2. Add coupling ground wire. 3. Reduce the impact grounding resistance of iron tower. 4. Neutral point indirect grounding system is adopted. 5. Strengthen the line insulation level. 6. Automatic reclosing shall be installed. 7. Install tubular lightning arrester. 2、 Typhoon weather is accompanied by strong wind and rainstorm, and accidents such as conductor galloping, wind deviation, line breaking and tower falling will occur on the transmission line. Broken lines and inverted towers are prone to North-South disconnection. With the increase of the designed wind speed of the power system on the transmission line, the probability of line breaking and tower falling accidents decreases, but the probability of accidents caused by violent swing of conductors, wind bias discharge and damage of floating objects is high. For the vibration lines with low wind speed, most of the lines can be controlled by installing anti vibration devices. In case of strong wind speed, the following measures can be taken: 1. Add anti vibration hammer and heavy hammer device to increase the vertical load carrying capacity of the transmission line and reduce the left and right swing amplitude of the line. 2. Install damping wires and armour rods, increase the number of split wires, strengthen conductors, and ensure the safe distance between conductors and iron tower. 3. The suspension mode of V-shaped insulator string is adopted to enhance the insulator resistance to lateral drift with the wind and reduce the wind deflection swing angle of insulator string. 4. When designing tower type and erecting transmission line, it is considered to leave a large distance between conductors, move down the hanging point, or lengthen and widen the cross arm. 3、 Mountain fire is caused by high temperature, human factors and other factors, which makes the air in the state of high temperature and low humidity for a long time. It is located in the mountainous terrain, between the transmission line crossing forest vegetation and the earth or between phase lines. Due to the rise of thermal dissociation of air particles, the increase of charged charge and the acceleration of particle movement The occurrence of line flashover tripping due to the formation of conductive channel accounts for 90%%uff0c of mountain fire tripping, which is the main cause of mountain fire tripping. It also includes the burning of line insulation at high temperature and the discharge of conductor to tower. In view of the mountain fire phenomenon, we should start with the fire prevention measures to reduce the incidence of mountain fire: 1. Control the height, quantity and type of trees near the tower base. 2. Emergency response measures shall be established, and safety passages with sufficient length and width shall be reserved. 3. The line protection system is reliable and sensitive. 4. Establish a real-time monitoring system and improve the monitoring effect; ⑤ Increase line inspection and eliminate hidden dangers by season, time period and weather conditions.
Cable Fault Tester
Cable Fault Tester
Cable fault detector can be seen everywhere in our daily life. Cable fault detector plays a lot of roles. Cables on the road can divert people and vehicles. The guardrail beside the river can protect people from falling into the river. The guardrail beside the lawn can protect the lawn from being trampled by animals and people. Therefore, the role of guardrail is still great, The installation of guardrail is also very important. The installation of river guardrail needs special attention. Let's follow the traffic guardrail manufacturer to see how to install River guardrail. The river guardrail is a guardrail product installed next to the river to prevent pedestrians on the river road from falling into the river. The base to be fixed during the installation of the river guardrail can only be in the original position, which may cause the base to not be fixed and lose the significance of setting the river guardrail. Simply put, it is to install the guardrail at an oblique angle, hit 2 Road nails to fix the base, and the remaining 2 nail holes are used for later maintenance. After the base of the river guardrail is fixed, the column is installed. Insert the column into the base, and then install the expansion screw. After the screw is fixed, two people need to cooperate when tightening the screw. One person holds the column to keep it vertical. When tightening the screw, the other person can tighten the screws at both ends. In this way, the column and base are installed. The next step is to install the guardrail piece. The steel connecting sleeve connects the river guardrail and the column. This is generally fixed on the column before leaving the factory, so as to reduce the on-site operation process of constructors. Align the guardrail piece with the upper and lower connecting sleeves of the column, and connect the left and right accurately. The above is the introduction to the steps of installing the river guardrail. When installing the river guardrail, we should follow the steps strictly and master the installation skills of the river guardrail, so that we can make fewer mistakes in installation and ensure the performance of the river guardrail in the process of use. We are a professional guardrail manufacturer. If you need to buy our guardrail products, you can call us to communicate with us.
How Does the Cable Fault Tester Solve Various Cable Faults
How Does the Cable Fault Tester Solve Various Cable Faults
Cable fault tester is a comprehensive cable fault detection instrument. It can detect common faults such as high resistance flashover of cable, grounding device of high and low inductive load, short circuit fault, disconnection and looseness of cable. If equipped with point instrument specified by acoustic measurement Law, it can accurately measure the position of common fault point. It is very suitable for testing wires, cables and power cables with various models, specifications and different levels of working voltage. When testing the common faults of high resistance of cables with this set of machinery and equipment, the impulse flash method is selected. The common fault points must be charged and discharged and there is fire. During the detection, attention must be paid to prohibit the detection in the natural environment of high coalbed methane and high concentration combustible gas. In this case, please contact the manufacturer and use other methods for detection. Due to the continuous upgrading and improvement of instruments and equipment, the appearance design of instruments and equipment will be slightly different from the instructions, but the basic principles and steps of actual operation are basically the same. It is very important to show you that this tester is an integrated design scheme with solid program flow and high credibility. Therefore, when it is not connected with high-pressure machinery and equipment, it can safely compare the operating instructions, constantly learn and train the actual operation, and grasp its role without worrying about the harm to instruments and equipment. When there are all problems or stuck in the actual operation, it can be calibrated or standby to start again. We firmly believe that if we carefully study the instruction training of the cable fault tester, we will quickly grasp the actual operation and effect of the cable fault tester, understand the series parameters such as the cable fault test standard, and at least know the fault performance well and be handy in use.
What Are the Test Steps for Cable Failure
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
Trusted Cable Tracker
Trusted Cable Tracker
The introduction of cable trackerCable tracker is a product that is designed to keep track of which channels people are watching. It is a device that can be plugged into the cable television system and tells the user which channel they are currently tuned.Cable tracker was first introduced in the early 2010's and has been through an evolution since then. These days, it has become one of the most important devices in households across America and Canada.Tips for cable trackerTracking what networks are playing your favorite shows will never be the same. The cable tracker is a device that enables you to watch all your favorite TV shows at one place.Cable trackers are relatively easy to set up, as they connect over the internet and require no installation or contract. The best thing about them is that they enable you to watch not only your favorite channels but also catch up on the ones you missed out on.How to use cable tracker?Cable tracker is used to move a cable without the need of cutting the cable with a saw. Cable tracker is mainly used by electricians for their work, but it can be used by anyone who needs to move wires and cables in tight spaces.Cable trackers are also known as worm clamps or cable clamps, and they are primarily made out of metal. It is important to remember that these devices should be used only when you are sure that any materials that you'll insert inside the device won't corrode because they could cause an electrical short circuit.This guide will show you how to use cable tracker based on various aspects of its operation: recording process, usage instructions, maintenance, and troubleshooting.1) Recording process: When inserting theThe specifications of cable trackerCable tracker is a cable installation tool that contains a variety of features that are needed to install wires and cables.Cable tracker is a versatile product than can be used by both electricians and contractors to install wires and cables. This tool has many features that make it easy for them to do their job.The main function of the cable tracker is to create a straight, level, and clean surface on which the cables can be laid without any complications. This process helps prevent unnecessary damages to the surface area or damage caused by sharp edges on the wire bundle. Apart from being safe for workers, cable tracker also allows easy access for other important equipment required during the installation process such as ratchet straps, screwdrivers, levels, etc.The product instructions of cable trackerCable tracker is a small device that cuts and secures cable. It is useful for those who need help getting rid of old cables.The product instructions are easy to read and understand. This makes it convenient for use, as the user can quickly learn how to use the product without any difficulty.The instructions are not very long, which makes it less time-consuming for the user to read through them before starting their project.The application of cable trackerCable tracker is a device which helps in finding the right cable for your home or office. This is especially helpful when you’re having trouble with the cable provider and you need to find out what the issue could be.The application of cable tracker has increased in recent years due to the development of technology. With more and more people relying on their smartphones for entertainment purposes, they are also relying on their phones for information like weather forecasts, traffic updates, etc.Cable tracker has helped home owners and business owners save money by avoiding wasteful spending on unnecessary cables while ensuring that they get exactly what they need.
Application Scope of Underground Pipeline Detector
Application Scope of Underground Pipeline Detector
Underground pipeline detection method is one of the commonly used geophysical detection methods. Generally, there are two methods: the first is to use DC detection method for geophysical detection. Specifically, in the process of detection, two power supply electrodes are mainly used for corresponding DC power supply, and a power supply cycle is formed underground, Through the circulating power supply to ensure the measurement of underground current density, we can effectively judge the specific location of buried metal pipelines. Generally, the detection using this method is mainly based on the corresponding metal pipeline. This method is based on the difference of current density. Generally, the most commonly used method of this technology is the high-density resistivity method for corresponding measurement. For example, during the measurement of underground pipelines in a city, the direct current detection method is used for geophysical detection, and the location of metal pipelines in concrete materials is effectively found; The second method is to use the alternating current detection method for geophysical detection. Specifically, in the process of detection, the corresponding conductivity and corresponding magnetic transformation generated by the alternating current in the process of magnetic field transformation are mainly used. In the process of detection, the corresponding underground pipelines are detected through the magnetic field formed by the alternating current, So as to effectively ensure the accuracy of underground pipeline detection. Through the use of alternating current detection method for geophysical exploration, we can effectively find the differences between underground media, and find out the specific problems and sources of these differences through the analysis of these differences. Specifically, these methods have the characteristics of uniform measurement and long working time. They are one of the effective means for underground pipeline detection.
Problems Often Noticed in the Operation of Underground Pipeline Detector
Problems Often Noticed in the Operation of Underground Pipeline Detector
The vast majority of underground pipelines are metal materials, which can induce and transmit electromagnetic waves. With its superior performance and flexible and convenient detection methods, the underground pipeline detector has a large number of users in the fields of electric power, telecommunications, water supply, heat, gas, petroleum, chemical industry and urban public utilities, which has played a positive role in improving the pipeline management level of relevant industries in China. Problems often noticed during the operation of underground pipeline detector (1). Cleaning, inside and outside of optical fiber welding machine, optical fiber itself, and the important parts are V-groove, optical fiber presser foot and so on. (2) During cutting, ensure that the cutting end face is 89 ° ± 1 °, approximately vertical. During the process of placing the cut optical fiber at the specified position, the end face of the optical fiber shall not touch any place. If it meets, we need to clean and cut again: it is emphasized to clean first and then cut! (3) When placing the optical fiber in its position, do not be too far or too close, 1 / 2 place, proficiency! (4) Do not open the windproof cover during the whole process of welding. (5) The process of heating the heat shrinkable sleeve is called the reinforcement of the connecting part. During heating, the optical fiber fusion part must be placed in the middle and a certain tension must be added to prevent bubbles and insufficient fixation in the heating process. It is emphasized that the heating process and the optical fiber fusion process can be carried out at the same time. When it is taken out after heating, do not touch the heated part. The temperature is very high, Avoid danger. (6) When arranging the underground pipeline detector tools, pay attention to breaking the optical fiber head to prevent danger. The optical fiber is glass fiber, very thin and hard.
Instructions for Use of Cable Fault Tester
Instructions for Use of Cable Fault Tester
When using the cable fault tester, we should first look at some simple waveform diagrams to analyze different cable faults, and then find out the fault points through the corresponding methods. The following is our simple analysis and description. 1. Test the low resistance grounding, short circuit and open circuit faults of the cable with the low voltage pulse method. A. no other auxiliary equipment is needed at this time. A clip wire is directly connected to the input and output interface of the cable fault location host. Clamp the red clamp of the clamp wire on the faulty phase core wire of the faulty cable, and the Black clamp on the sheath ground wire of the cable. B. Start the power switch of the instrument, the screen saver picture will appear on the screen, and click to enter the interface automatically. At this time, the default state of the instrument is "low voltage pulse method". The use method shall be selected according to the type and length of the tested cable on site and the fault nature preliminarily judged. When it is set to "low voltage pulse method", wave velocity measurement can also be carried out on this interface, and historical files can be opened to view previous test results. C. After setting the equipment parameters, click the "sampling" button, and the instrument will automatically send out test pulses. This interface will display the (open circuit) full-length waveform of the cable (as shown in Figure 5) or the low resistance grounding (short circuit) fault waveform (as shown in Figure 6). If the waveform is not good, the operator shall adjust the "median" and "amplitude" and observe the collected echo until the operator thinks that the amplitude and position of the echo are suitable for analysis and positioning. Basic information such as instrument parameter setting is also displayed at the bottom of the screen. During operation, pay attention to the operation status at the bottom of the screen. D. Waveform positioning reading distance. It is easy to judge the distance of low-voltage pulse, as long as the cursor is positioned to the starting point of transmitted and reflected waves respectively. E. When "saving", the test results need to be retained or reserved for comparison. The "saving" function in the instrument should be used to save the measured waveform in the instrument database. If the tester thinks it is necessary to save the test results, he can click "save" and operate according to the prompt in the submenu. 2. The high resistance leakage fault (including high resistance flashover fault) of the cable is tested by the impact high voltage flashover method. The instrument can test the high resistance leakage fault of the cable by the impact high voltage flashover method. Impulse high voltage flashover method is a popular traditional detection method in China. Many users are used to this method. The external circuit is relatively simple, but the waveform analysis is more difficult. Only on the basis of a large number of tests and some experience can we master it skillfully, but it is still an effective test method. Connect the current sampler attached to the instrument with the host with the signal wire and place it next to the grounding wire between the cable and the high-voltage equipment. As long as the output voltage of the impulse high voltage generator is high enough, the fault point will be broken down under the impulse of this impulse high voltage, and the radio wave reflection will be generated in the cable. The current sampler transmits the induced reflected wave obtained from the current signal on the ground wire through magnetic coupling to the cable fault location host for a / D sampling and data processing, and displays the collected waveform on the screen for fault distance analysis. After the cable type and sampling frequency are determined, you can click the "sampling" button to wait for sampling. Once the high-voltage generator has impulse high-voltage flashover, the instrument will automatically carry out data acquisition and waveform display. The red waveform at the top of the screen is the waveform after local amplification, and the blue waveform at the bottom is the full picture of the test waveform. When the ideal waveform is collected, the "waveform scaling" and displacement and moving cursor can be operated to calibrate the fault distance. The operation method is consistent with the low-voltage pulse method. 3. Wave velocity measurement cables produced by different manufacturers, although the models are the same, the differences in process and medium formula will lead to the differences in radio wave propagation velocity. If the average wave propagation speed given by the instrument is directly used, it will cause a certain test error. In order to test the fault distance more accurately, it is often necessary to recheck (test) the radio wave propagation speed of the cable.
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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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