Non Contact High Voltage Detector Buying Guide

Non Contact High Voltage Detector Buying Guide

2021-10-22
NOYAFA
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SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED has offered high-quality non contact high voltage detector at a competitive price for years and has already built a good reputation in the industry. Thanks to the strict quality control at every step of production, deviations in the production line can be quickly spotted, ensuring that the product is 100% qualified. What’s more, the use of premium quality raw materials and the advanced and sophisticated production technique further ensure the product durability and reliability.Our NOYAFA brand presents our products in a consistent, professional way, with compelling features and distinctive styles that can only be NOYAFA products. We have a very clear appreciation of our DNA as a manufacturer and the NOYAFA brand runs through the heart of our business day-to-day, continually creating values for our customers.To improve customer satisfaction while purchasing non contact high voltage detector and suchlike products, the 'Best Cable Tester Supplier in China _ Noyafa Code of Conduct' has been established, stressing that all employees must act with integrity and exhibit the utmost sincerity in the following three areas: responsible marketing, product standards, and protection of customer privacy.
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How to Select a Good Cable Fault Tester
How to Select a Good Cable Fault Tester
In recent years, cables have been widely used in various industries. More and more equipment are used to detect cable faults, and their types and models are increasing. At present, there are a variety of instrument types and instrument names in the domestic cable fault detection instrument market. In addition to the common cable fault testers in China, they also appear in the market one after another. So, how to choose so many cable fault detection equipment? 1、 When you choose a cable fault tester, you need to know its own quality, such as whether its parts are compact and whether its whole shell is solid. These aspects can let you know what the cable fault tester you choose is, whether it has very solid quality and whether it has very strict production process, To determine whether it's worth your choice. But then again, the manufacturers still have a good guarantee for all aspects of the cable fault tester produced by themselves. Although the process is rigorous and other aspects are outstanding, it can indeed have a good test effect in testing the problems of the power system of the power grid. 2、 When choosing the cable fault tester, we should also understand its operation performance and simplicity, whether the performance is stable and whether it will be disturbed by electromagnetic field. These aspects also determine whether the cable fault tester we choose has very accurate test data, whether the operation is simple and whether it takes a long time.
Introduction of Test Composition of Live Cable Fault Tester
Introduction of Test Composition of Live Cable Fault Tester
Cable fault tester is a commonly used cable fault detection equipment. This equipment is used with a variety of cable fault detection. Its stable performance and accurate detection make the cable fault detection more comprehensive. The work efficiency of inspectors has been greatly improved. Today we mainly explore the composition of live cable fault tester. Test composition of live cable fault tester: 1. Live cable fault tester is composed of the following parts: 1. Instrument host: cable fault flashover tester, referred to as flashover tester for short. Cable path test signal source, referred to as path tester. Cable fault point / path meter receiver, referred to as point meter. 2. High voltage accessories: high voltage pulse capacitor. The utility model relates to an AC / DC dual-purpose high-voltage test transformer. High voltage test transformer operation box. 2、 The test functions of the cable fault tester mainly include: 1. Purpose: it is suitable for low resistance fault test, short circuit fault test, open circuit fault test, high resistance leakage fault test and high resistance flashover fault test of various power cables with different sections and media, high frequency coaxial cables, municipal cables, street lamp cables, ground buried wires, etc. Specifically, there are the following types: (1) testable cables are equivalent according to voltage: low voltage cables and high voltage cables. (2) Testable cables can be divided into: power transmission cables; Control cable; Street lamp cable. (3) The testable cables can be divided into: directly buried cables, cables laid in cable trenches, overhead cables and more than two parallel directly buried low-voltage wires. (4) Testable cables can be divided into: short circuit fault; Phase failure; Low resistance fault; High resistance leakage fault; High resistance flashover fault is described in detail after fault classification. (5) If there is a cable identifier, we can find the cable we are looking for from multiple cables buried in the cable trench, that is, the cable identifier. (6) Both fault test and cable identification are conducted for power-off cables, and fault test cannot be conducted for live running cables. 3、 Introduction to the test principle of cable fault tester: 1. The host of this set of instrument is a host, which is mainly used for cable fault test. 2. It is a rough measuring instrument for cable fault distance, which can measure the approximate distance from the fault point to the cable test end face. 3. The lightning meter can measure the cable length and the propagation velocity of electromagnetic wave in the cable. The test principle of lightning meter is radar reflection method, also known as pulse reflection method. Single end test distance of lightning meter: 15km. Minimum test distance (blind area) of lightning meter: 15-20m. 4. Measurement error of cable fault tester: rough measurement error & plusmn; 1%, system (point) error & plusmn; 0.2m. In short, after accurately determining the fault point, dig a pit to find the fault point. 5. The principle of cable fault detector for finding cable path is to add electromagnetic wave signal to the tested cable and receive the signal of finding cable path through the pointing instrument. The minimum characteristic of receiving electromagnetic signal on the ground directly above the cable is used to determine the buried position of the cable.
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.
Cable Tester to Test Your Home Network
Cable Tester to Test Your Home Network
The introduction of cable testerA cable tester is a market expert who looks into a specific product and finds flaws in it. They are usually looking for products that are either faulty or un-performing, so they make sure to find out which product is the most likely to break. Although, their job is not necessarily related to the product itself, but they look for any sort of issues with the basic properties of an item.Tips for cable testerA cable tester is a person who reviews the quality of cables in different locations and makes sure that they meet the standards. They do this by making inspection decisions, often at short deadlines.The most important thing to remember while reviewing cables is that no part of a cable should touch the ground or any of its power sources because doing so can affect the performance and reliability of cables in those places. In addition, when inspecting cables for damage, there should be other requirements as well - for example, according to ISO-IEC 61631-1 (or equivalent) standard, cable manufacturers have to report any kind of deviation from safety standards.How to use cable tester?This page will provide you with information on the best way to use cable testers.In this article we are going to discuss about how to use cable testers and their pros and cons.The specifications of cable testerThe cable tester is a very important part of the electronics system and it's always in high demand. Also, the industry experts are always looking for more information on this subject.The product instructions of cable testerIt is now possible to test cable products, determine the quality of their performances and reviews, without having to physically go inside the box.##Section topic: Movies and television series of the next generationIntroduction: “The new generation” refers to all people born after 1985 and up. The biggest trend in this context is the increase in the number of young viewers who are looking for different kinds of content. This creates a big opportunity for film makers and television producers. For example, recent films such as "Black Panther" have been successful because they capitalized on this trend by making a character who was not like other characters that had appeared before. It seems that there is an opportunity for movie makers to get inspiration from these trends in order to create feature oriented movies. The same applies forThe application of cable testerThe application of a cable tester is a process that an electrician uses to check the wire and cable system in a building or industrial site before the building is occupied.
Functions of Professional Cable Identifier
Functions of Professional Cable Identifier
In order to quickly and accurately identify a specific cable from a bundle of cables, special instruments are needed, such as professional cable identification instrument. It is a compact instrument with relatively simple operation. So, what other functions should the cable identifier have? This is what Xiaobian wants to discuss with you today. Cable identification instrument is a special instrument used to identify a specific cable from a bundle of cables. It is a compact instrument, which is installed in an aluminum alloy box and consists of a signal generator, a receiver with sensor and wiring. In order to identify the cable reliably and accurately, it is necessary to add a special signal to the identified cable, which should be received by a special receiver. Using this characteristic, the cable to be found can be identified. The generator feeds periodic unipolar voltage pulses into the cable to be identified, which needs to be grounded at the far end to ensure that a large enough current flows through the cable. The system shall be designed so that the return current does not return from the same cable. This can be achieved. The direction of the pulse current fed into the cable can be used as an obvious identification standard. The outgoing current only passes through this cable, and all other adjacent cables flow through the return current, but their polarity is opposite. In addition to the actual difference in current direction, the current amplitude is also an identification feature. The outgoing current only passes through one cable, while the return current can pass through several cables, which means that the outgoing current is greater than the return current flowing through other cables. The task of the receiver is to detect the direction and magnitude of the current flowing through the cable. In order to achieve this purpose, the current sensor is used as a sensor, which is equipped with an amplifier and connected in series in the circuit. The sensor clamps the measured cable. The magnetic field generated by the current flowing through the cable induces a voltage in the coil of the sensor. The polarity of the voltage is determined by the current direction and the direction of the sensor coil. In order to obtain the voltage polarity with obvious current direction, all cables in a bundle shall be tested in the same correct direction. The voltage induced in the sensor coil is displayed in the meter. If the sensor is connected in the above way, the pointer swing direction can display the current direction, that is, only the cable with current flowing out deviates to one side, and this is the cable to be found. All other cables only flow return current, the pointer deviates to the other side, or there is no pulsating current, and the pointer does not deflect. The amplifier regulator on the receiver can adjust the signal strength. What we need for professional cable identification instrument is, on the one hand, of course, to have good accuracy. If the accuracy is not enough, we will use it in vain. If it is not accurate, it will affect the later stage. In addition to accuracy, it is necessary to ensure the service life. When an ordinary voltage current ratio meter type grounding resistance meter (commonly known as grounding megger) is used to measure the grounding resistance, the grounding device passing through the tower shall separate the grounding down lead from the tower for measurement; Through the grounding device of non prestressed reinforced concrete pole, the measurement shall be carried out after the grounding down lead is separated from the lightning conductor from the top of the pole. In the initial state of the system, press the setting key of the DC resistance tester to enter the setting function state, set the material option to unknown, set the measurement mode to resistance, set the working mode to standard, set the measurement speed to standard, and press the return key to return to the initial state of the system.
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.
Advantage Analysis of Cable Fault Tester
Advantage Analysis of Cable Fault Tester
With the development of the market, cable fault tester is mainly divided into common and three pulses. What are the advantages and functions of these two kinds? Yuange will explain them to you. [functional advantages of common cable fault tester] 1. It can measure high and low resistance faults of all cables below 35KV, with wide adaptability. 2. It has user-friendly software and full Chinese menu. Key definition is simple and clear. The measurement method is simple and fast. 3. Excellent fault detection success rate, test accuracy and test convenience. As the display terminal, the 4.8-inch color LCD touch screen has strong data processing ability and friendly display interface. 5. Sampling high voltage protection measures are provided. The test instrument will not crash and damage in the impact high-pressure environment. 6. With computer communication interface, it is convenient to save data and graphics in the computer. 7. No test blind area. 8. The built-in power supply can test the open circuit and low resistance short circuit faults of the cable in the environment without power supply. [functional advantages of triple pulse cable fault tester] 1. It can measure high and low resistance faults of all cables of 35kV and below, and has a wide range of adaptability. 2. The "three-stage pulse method" and "three-stage multiple pulse method" are adopted. At the same time, it also has the traditional high-voltage flashover method and low-voltage pulse method. 3. Any high resistance fault presents simple waveform characteristics similar to low voltage pulse short circuit fault, which is very easy to interpret. 4. It has user-friendly software and full Chinese menu. Key definition is simple and clear. The measurement method is simple and fast. 5. The central control unit is used for one key control to trigger three levels of signal output in sequence to ensure safety and success rate. The central control unit can prompt the operation steps and monitor the work process. 6. It has the function of test waveform storage, which can easily store the waveforms tested on site in the instrument according to the specified sequence for call and observation at any time. A large number of field test waveforms can be stored. 7. The measured fault point waveform and good phase full-length open circuit waveform can be displayed on the screen at the same time for the same screen comparison and superposition comparison, and the fault distance can be judged automatically. 8. 11 inch bright color touch LCD display, with strong data processing ability and friendly display interface. 9. Sampling high voltage protection measures are provided. 10. With 232 computer communication interface and USB communication interface, it is convenient to save data and graphics in the computer. 11. The built-in power supply can test the open circuit and low resistance short circuit faults of the cable in the environment without power supply. [functional advantages of cable fault locator] 1. The data display part adopts a highlighted 4.3-inch OLED color LCD to make the display interface clearer. 2. The function and parameter adjustment part adopts a one key programmable pulse coding keyboard, which makes the operation panel more concise and the operation more convenient. 3. The instrument will collect and display the waveform of the audio part in real time. The distance of the fault point can be roughly observed by observing the repetitive waveform characteristics and distance axis, and the operator is not easy to be tired. 4. There are single and continuous modes in the acoustic magnetic fixed-point mode. If the discharge frequency is too fast and the gap time is too short, the user can select the single mode to carefully analyze the relevant data such as the primary discharge waveform, and the waveform page turning is supported in the single mode. 5. In the acoustic signal acquisition, four filter bands are adopted, including low frequency band, intermediate frequency band, high frequency band and full frequency band, which can be selected by the user according to the actual situation on site. 6. The step voltage part adopts waveform display to continuously sample and refresh the signal, so that the user can enhance the continuity analysis of the signal and the resolution of the jump signal. 7. The step voltage part is subdivided into multiple gears, and the large signal is automatically attenuated during the adjustment process to ensure that the display signal is not limited when the maximum voltage amplitude within the test range is input. 8. FIR digital filtering technology is adopted for audio filtering, which makes the characteristic frequency band more obvious and the filtering performance better. 9. Display the distance of the fault point. The distance of the fault point can be displayed within 0-25m. 10. In continuous mode, the compressed waveform within 15m can be displayed. In single mode, the waveform within 15m can be analyzed.
Brief Introduction of Cable Fault Locator
Brief Introduction of 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!
Cable Tester, Cable Tester Software
Cable Tester, Cable Tester Software
The introduction of cable testerTo reduce the costs of content development, some companies require their writers to do the same thing they do for clients. They test the quality of the content produced by both internal and external writers.Tips for cable testerThe cable tester is responsible for testing all the cables of a home or network. These testers are usually used to test whether a cable is working correctly or not. In most cases, the cable tester uses basic tools like voltmeter and ohmmeter to check the electrical connection but sometimes they also need other tools like earphones and headphones.How to use cable tester?Cable splitter is a device used to split an HDMI cable into two cables. It can be used to split HDMI cables into three different cables, four cables, five and so on.The specifications of cable testerAn expert in his field is a better source of information than a layman. A good cable tester knows what he is talking about and can therefore point out issues with cables.The product instructions of cable testerIn order to test the product, a tester needs to watch a video. The person who tests the product needs to know what the visuals look like. They need to know what is visible and what is not in order to understand if this is a good or a bad product for them.The application of cable testerA cable tester is an application that uses some artificial intelligence techniques to test the quality of the cables. These artificial intelligence techniques are designed to ensure that cables don't break or give out during a long run, and catch any faulty cables.The application of cable tester in a production environment is not easy, as it involves a lot of manual work as well as advanced testing procedures. It also requires communication between multiple people to make sure that all the tests are done correctly. There are also a lot of problems with this scenario which makes it more problematic for companies to consider it for their production environments.
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