Guide to Shop Lan Cable Speed Tester in NOYAFA

Guide to Shop Lan Cable Speed Tester in NOYAFA

2021-10-10
NOYAFA
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lan cable speed tester is regarded as the star product of SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED. It is a product designed adhering to international standards and is found to conform to the ISO 9001 requirements. The materials selected are known as eco-friendly, thus the product meets environmental protection requirements. The product is continuously upgraded as innovation and technological change are implemented. It is designed to have the reliability that spans generation. With NOYAFA's exceptional sales network and dedication to delivering innovative services, we are able to build strong and long-lasting relationships with customers. According to the sales data, our products are sold to different countries around the world. Our products continuously improve customer satisfaction during our brand expansion.Our mission is to be the best supplier and a leader in services to customers seeking both quality and value. This is safeguarded by continuous training for our staff and a highly collaborative approach to business relationships. At the same time, the role of a great listener that values customer feedback allows us to render world-class service and support.
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Basic Principle of Live Cable Identification Instrument
Basic Principle of Live Cable Identification Instrument
As the running live cable is not allowed to damage any grounding wire and other connecting wires, nor is it allowed to directly add the output signal of the live cable identifier transmitter to the cable phase line with high voltage. Two difficult problems need to be solved for live cable identification. One is how to couple the cable identification signal to the cable; Second, the coupled signal is generally small, and the operating cable may have 50Hz power frequency electromagnetic interference composed of 50Hz unbalanced current, induced 50Hz interference current, cable distributed capacitance current, etc. the high-sensitivity receiving caliper has the problem of how to resist 50Hz power frequency interference. The charged cable identification instrument developed by US adopts single chip microcomputer coding and decoding technology and PSK technology widely used in the field of communication. The phase coded signal with an average value of 0 is transmitted on the transmitting caliper, and the single chip microcomputer in the receiving caliper performs phase identification after filtering the received signal by hardware and software. When the receiving caliper cards the cable according to the current direction, the identified cable ammeter deviates to the right, accompanied by audible and visual indication. The current direction of other cables is opposite to that of the identified cable, and the ammeter pointer deviates to the left. No audible and visual indication. This reflects the uniqueness of the identified target cable. It is easy to distinguish the identified cable from multiple cables. In addition, since the signal current strength on the identified cable is the same throughout the line, the electromagnetic signal strength received by the receiving caliper along the cable is the same. In principle, the identified cable is not limited by the length of the identified 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 main products are high voltage cable fault tester, cable fault tester, underground cable fault tester, etc. The enterprise adheres to the tenet of building a business in good faith, keeping the business with quality and developing the business with enterprising. It continues to climb new peaks with a firmer pace and make contributions to the national automation industry. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
Cable Tester Buyer's Guide
Cable Tester Buyer's Guide
After I had read about the AI-enabled cable tester, I visited an exhibition and saw a demonstration. It was very impressive. The analyst who demonstrated it showed me how the software could detect different aspects of a TV, including its size and weight. He showed me how the software would constantly update itself based on what it found and how well it was able to predict which device would be best for my needs as a consumer.In order to give you the best deals on the latest technology, we have created a simple tool called "Cable Tester". With this tool, you can find the best prices for TVs and Blu-ray Players.In this era of unprecedented competition for every consumer and a shrinking channel space, the TV market is becoming more and more competitive. As a result, there are not enough ways to choose from, while keeping costs down.The TV industry has long been dominated by a handful of companies. If you are a consumer, you may have to buy several TVs before you find one with the best features and price.Various tech companies are incorporating AI into their products. They want to sell machines that can do this for them, but they also want to make sure that the machine is not harmful and does not break any safety regulations.Computer vision is getting better at identifying objects in the room, even when there are people around. This allows us to recognize faces in photos and other features such as hair color or age that we would not notice otherwise. It can represent people and objects accurately so that users do not have to do much work in order for their needs be met. It can also recognize specific elements of what it sees like"Tv Tester" is a feature that was added to the Netflix app. The purpose of this feature is to make it easier for people to find the best deals on TV. To do so, it provides recommendations based on the user's preferences and content of interest.Cable tester is one of the most popular tools for discovering great deals on TV, Blu-ray players and other electronics. However, generally speaking, cable testers aren't very useful unless you already know what features each brand offers. That's why we decided to make it a whole lot easier to find the best TVs and Blu-ray players for you by providing an overview of 10 of the best cable testers in each category.Since most people buy a TV or a Blu-ray player, they have to think about the best price.With an AI writer, you can get rid of all those guess-work and come up with an idea in the right context. The AI will suggest you the right price and provide you with information on brands and models that might suit your needs.Because of the sheer number of TV offers on the market, it can be difficult for consumers to choose the best TV for them. Rather than spend too much time finding the best deal or scouring through endless reviews, a cable tester can give you just enough information to make an informed decision before you buy that new TV.A cable tester is someone who tests cables. It is an activity that needs to be performed very carefully and must not be done in haste.The main purpose of the cable tester is to check the quality of a cable, whether it has any defects or if there are any loose connectors. When a cable fails, this can lead to fire or other forms of damage. Hence, it is important that the test results are accurate and accurate testing equipment should be used. Also, it must be mentioned that some cables fail because they are damaged during transit and not in use.The cable tester is a device that is capable of detecting a number of different kinds of faults in cables. This article will discuss the most common types of faults and what the cable tester can do to help diagnose them.Cable testers come in three types: video, audio, and fibre optic. Each type has its own set of specific characteristics and can be used to detect faults in your cables (see our article on each type). Here's a brief overview:
What Is the Difference Between a Live Cable Identifier and an Uncharged One
What Is the Difference Between a Live Cable Identifier and an Uncharged One
Cable identification instrument can accurately find out the characteristics of cables in a bundle of cables, which is a common equipment. Its wide range of applications can be used not only in cable fault handling, but also in cable erection or migration. There are two kinds of cable identification instrument, one is live cable identification instrument, and the other is not live. So what's the difference between them? Next, let's have a look. How to find a specific cable in a bundle of cables? How to accurately identify cables? Many power maintenance companies most commonly use the live cable identification instrument in power cable erection, migration, maintenance and fault treatment. However, in the face of complex cable and environmental differences, it has become very difficult to identify the running cable. What is the difference between a live cable identifier and a dead cable Identifier? How to distinguish quickly? 1. Working principle of the cable identification instrument the main working principle of the live cable identification instrument is to transmit the phase coded signal with an average value of 0 on the transmitting caliper, receive the single chip microcomputer in the caliper, filter the received signal through hardware and software, and then carry out phase identification. When the receiving clamp clamps the cable according to the current direction, the identified cable ammeter deviates to the right, Accompanied by audible and visual indication. The current direction of other cables is opposite to that of the identified cable, and the ammeter pointer deviates to the left. The working principle of the dead cable identification instrument is to add a special signal to the identified cable, which should be received by a special receiver. The periodic unipolar voltage pulse is fed into the cable to be identified. The direction of the pulse current fed into the cable can be used as an obvious identification standard, and the outgoing current only passes through this cable. 2. Basic parameters of the cable identifier: insert the red and black wiring plugs of the transmitting caliper a into the two red and black wiring posts corresponding to the transmitting source, and clamp the transmitting caliper a on the identified cable. The arrow on the transmitting caliper a points to the cable terminal. On the identified cable two meters away from the transmitting caliper, clamp the receiving caliper B to the cable, and the arrow on the caliper must point to the cable terminal. Then check the current direction and test connection direction. At the identification point, identify each cable with receiving caliper B. During identification, the arrow on the receiving caliper must always point to the terminal direction of the cable, and the cable shall be clamped one by one. On the identified cable, the current meter pointer of the receiver must deflect to the right, and the audible and visual alarm prompts 3. Precautions for the use of the cable identification instrument (1) if the operating cable has voltage and no load, there will be no current flowing on the cable. At this time, the magnetic field cannot be detected. It is considered to be an uncharged cable, which is very easy to misjudge. (2) If the cable is not running, but if this cable is parallel to other running cables, there will be induced current and magnetic field. At this time, the instrument will also have indication, and misjudgment will occur. (3) If there are multiple cables in the cable trench, these multiple cables will generate a magnetic field. At this time, there will be a magnetic field generated by 50Hz current in the whole area. At this time, there will be a magnetic field in the whole area, which makes the discrimination impossible. It is easy to misjudge.
What Are the Principles and Advantages of High Voltage Bridge Method
What Are the Principles and Advantages of High Voltage Bridge Method
What is a high voltage bridge? Designed based on the principle of Murray bridge, it is applicable to the location of breakdown points (low resistance, high resistance and flashover breakdown) of various wires and cables after laying and points without breakdown but with low insulation resistance: for example, the insulation defect points with low cable resistance but without breakdown under operating voltage are found with a megger. Of course, it can also be used to locate the defect points of various cables in the cable factory. There are two methods of cable fault location in rough measurement: electric bridge method and wave reflection method. At present, wave reflection locator is more popular. Its disadvantages are: the field wiring of some instruments is complex and there is a positioning blind area. When the waveform is not typical, the positioning personnel are required to master the instrument and be experienced to distinguish the pulse waveform. There are several cable faults that are difficult to find by wave reflection method: for example, insulation defect points of high-voltage cable sheath, steel tape armored low-pressure cable, PVC cable, no reflected wave, unable to locate. Short cable, unable to locate. Some high breakdown points cannot be broken down under impulse voltage and are difficult to locate. The high-voltage bridge cable fault tester contains a high-frequency, high-voltage and constant current source, which solves the interference problem of the power supply to the high-sensitivity amplification of the bridge. The power supply and the bridge are integrated. The measuring cable is a special high-voltage cable, which adopts the resistance measurement principle of four terminal method, with high positioning accuracy. The bridge is placed on the high voltage side and the operating button is safely grounded. The limitation of the bridge method for high resistance positioning is solved, and the characteristics of no blind area, accuracy and convenience of the bridge method can be brought into play. Murray principle in high voltage bridge: Murray in Chinese means Wheatstone, Wheatstone bridge (also known as single arm bridge). The universal Wheatstone bridge resistors R1, R2, R3 and R4 are called the four arms of the bridge. G is the galvanometer to check whether there is current in the branch where it is located. When G has no current, it is called that the bridge is balanced. When balancing, the resistance values of the four arms meet a simple relationship, which can be used to measure the resistance. When G has no current, it is said that the bridge reaches balance. When balancing, the resistance values of the four arms meet a simple relationship. Using this relationship, the resistance of Murray bridge can be measured. Advantages: 1. Murray bridge balancing method has no test blind area, which is used to judge the short cable and the breakdown point near the cable end. 2. Murray bridge method only requires the uniformity of cable phase resistance. Cables with poor traveling wave transmission characteristics, such as PVC low-voltage cables with large dielectric loss, can effectively judge the short cable and the breakdown point near the end by combining the current source with Murray bridge technology, so that steel tape armored low-pressure cables and PVC cables can have positioning and no blind area search.
How to Quickly Detect the Fault Point of Low Voltage Cable
How to Quickly Detect the Fault Point of Low Voltage Cable
In many years of specific work, people have found that there are many differences between the common faults of high-voltage cables and low-voltage cables. Most of the faults of high-voltage cables are dominated by common faults of operation, and most of them are common faults of high resistance, which can be divided into leakage and flashover; The common faults of cable can only be led, short circuit and open circuit (naturally, high-voltage cable also includes these three conditions). In addition, the cable also has the following characteristics in the whole process of specific application: 1. The laying is blind, and the relative path is not very clear. 2. When laying, it is not buried after filling sand and bricks like high-voltage cables. On the contrary, the buried depth is shallow, which is easy to be damaged by external forces and common faults occur. 3. Cables are generally short, ranging from tens of meters to 500 meters, unlike high-voltage cables, which are usually 500 meters to many kilometers. 4. The compressive strength of the insulating layer is low. When solving common faults and making connectors, the processing technology is relatively simple. 5. Most cables are often burnt and damaged at common fault points. The common fault point is that there is no mark on the surface of the cable, which is very rare. ⒍ the required load changes greatly, and the two colors are usually unbalanced, which is very easy to get hot, resulting in common faults. Considering the above characteristics of the cable and the proposals clearly put forward by many customers and the specific application status of people in each region, the scientific research staff has successfully developed and designed the DW cable fault test mobile phone positioning system: the system software includes two parts: rangefinder and detector. The range finder of hn-213x system software is a completely intelligent system and personalized design scheme. It automatically detects the cable fault point without manual service, analyzes the common fault wave type, and immediately gives the distance between common fault points and common fault characteristics. The rechargeable battery power supply system is selected, which is convenient for field work, small in size, light in weight, easy to use, and does not need all auxiliary machinery and equipment. The cable fault detector of hn-213x system software is an instrument and equipment for simultaneous and accurate positioning and detection of the laying relative path, buried depth and common fault points of directly buried cables. Because it is a mobile phone positioning system for common cable faults based on the magnetic effect of current and the basic principle of step voltage, it mostly considers all standards of cable fault test. This kind of detection system software has many advantages compared with the cable fault detector based on the impulse flash method: 1. A variety of test standards are integrated and the results are mutually certified to clarify the uniqueness of common fault points. 2. Small size, light weight, easy operation by one person, no auxiliary machinery and equipment. 3. The rechargeable battery power supply system is selected, which is suitable for field work without ignition, charge and discharge. 4. The relative path search of cable (which can be clearly in the middle of 30cm), buried depth detection and accurate positioning of common fault points are carried out in the same step with high efficiency. 5. Clarify the common fault points, and the instruments and equipment have visual display information without wave type analysis. ⒍ it will not be harmed by underground conditions (such as bifurcation of cable, bundling, distortion of connector, etc.). Like detecting bombs, it searches common fault points point by point, and the accurate positioning deviation is within more than ten centimeters, which is very accurate. ⒎ it will not be harmed by ground conditions, such as floor tiles, road greening, concrete ground, etc. 8. Check the safety on the spot, there is no risk to the inspector, and there is no secondary damage to the cable. ⒐ high quality and low price are acceptable to ordinary customers. We know that the insulation layer of cable is relatively low. In addition, the electric flow is very large in the whole process of operation, and there are significant characteristics after common faults. The actual classification is as follows: the first kind of common faults: a piece of cable is burned out or a phase is burned out. This kind of common faults lead to the posture of current relay on the distribution box, and the cable is seriously damaged at the common faults. The second type of common fault: short circuit fault of each phase of the cable. Similarly, this type of common fault causes the current relay and voltage relay on the distribution box to be in a bad position, and the cable is also seriously damaged at the common fault point (possibly caused by external force). The third type of common faults: the cable can only be short circuited in one phase, the current relay posture, and the common fault points are slightly damaged but significantly exposed. It may be due to the high voltage of this phase or the quality of the cable. The fourth type of common fault: internal short circuit fault of cable, no mark can be seen on the surface. This kind of common fault is generally caused by the quality of cable, which is relatively rare. Common faults of hn-213x cable can be easily detected by the fusion application of rangefinder and detector in mobile phone positioning system. In addition, the characteristics of different common faults and the length of cable can also be detected separately. The actual situation is as follows: the first type of common faults and the second type of common faults. If the cable is short (less than 500m), the common fault detector can be used to accurately locate the common faults immediately without the cooperation of the distance finder. The common fault points can be identified by stepping in the hand receiver along the relative path (the relative path can be measured while walking). The third type of common fault: because the cable is slightly damaged at the common fault point, the data signal sent by the transmitter leaks less here. When accurately locating the common fault with the detector, the marking scope is narrow. At this time, the distance between the common fault points can be measured with the distance meter, and then the accurate positioning with the detector is also very convenient. The fourth type of common fault: this type of common fault is the most difficult to predict among all cable faults at this stage. At this time, you can use a rangefinder to detect the cable on both sides of the cable, and then compare the detection results with the specific length, so that the common fault point can be defined in a small range (1-3m). At this time, dig the cable and find the problem, Or decisively cut off this section of cable (because the cable is very cheap, the insulation layer is low, and the connector is easy to do), or use a detector to select the audio frequency for accurate positioning in this section, which can also identify the common fault points. At this stage, the cable fault detector based on impulse flashover method, which is applied by many customers of cable fault detector in power engineering, generally can use a distance meter to roughly measure the distance between common fault points when dealing with common faults of low resistance of cable and common faults of dead grounding device (the distance detection of such common fault points does not need high-voltage charging and discharging machinery and equipment, and the bottom pressure single pulse method is used) However, ignition, charging and discharging and listening to sound are still used for accurate positioning of common fault points. In addition, the relative Pathfinder of such instruments and equipment is separated from the designated instrument, which makes it impossible to specify the relative path at the same time when selecting the correct relative path, and usually deviates from the relative path when specifying. Moreover, due to the limitation of the basic principle, the relative Pathfinder of such instruments and equipment finds the relative path of the cable It is impossible to find the exact relative path of the cable when the cable is in the middle of the total width of 1-2m. Considering the applicability, hn-213x cable fault detector just fills the shortcomings of the application. It can accurately locate the common fault points of the cable, detect the buried depth and the relative path smoothly. The instruments and equipment are very vivid in the marking of common faults, relative path and buried depth No need to do technical index analysis or rely on the working experience of the operator. It makes the original complex fault test work become a relaxed and interesting thing. Therefore, many customers of impulse lightning cable tester can form a set of extreme low-voltage cable fault tester if they have another DW cable fault detector and the original distance finder. In addition, the The common faults of low resistance and short circuit of external high-voltage cable can also be specified quickly to improve the efficiency many times.
Wire  Trackers
Wire Trackers
The introduction of wire trackerWire trackers are the latest trend in the fishing world. They are a device that is used to detect fish by sound. It emits an electric signal that is picked up by a receiver, giving you both your distance and direction from the fish. These devices come in handy especially when you don't have access to GPS or other methods of determining location.These devices are designed for both professionals and beginners alike and they are easy to use. Wire trackers are not only targeted towards fishermen but also for avid birdwatchers, hunters, hikers, geocachers, boaters and anyone who needs to know their distance from a particular point.Wire trackers have been around since the late 1970s but didn't become popular until about five years ago when they started becoming popular among professional fisherman in Europe andTips for wire trackerIn order to be successful in writing, it is important to understand the essence of wire tracking. With this explained, you will be able to write more professional content and grow your career.Wire tracking is a process where copywriters find out what a company's goals are and then create content that they can share with the company while also promoting their own work.It’s important for copywriters to know what sets them apart from wire trackers so that they can provide value-added services for their clients. This includes providing design services, social media engagement services, and website development services.How to use wire tracker?Wire trackers are not a brand new tool, but they are gaining traction as part of the marketing mix. They allow marketers to measure and analyze their online performance in real time.Many websites use wire trackers to measure whether the content they produce is performing well or not. This helps them generate accurate and relevant content that people want to read. The most effective wire tracker allows you to view your website from multiple different perspectives, including social media, search engines, referrals and more.Wire trackers can capture important information such as sentiment analysis or SEO insights on how visitors interact with a website’s content.The specifications of wire trackerWire trackers are used in construction to help builders measure walls. In houses, they are used for measuring and marking the location of electrical outlets or switches.When it comes to house constructions, wire trackers come in handy. They help with measuring and marking the location of outlets or switches. For other areas, they have been used in construction as well as architecture where they can be attached to beams or posts so that their lengths can be measured easily.The product instructions of wire trackerWire trackers are a type of wire used in electrical wiring. They serve to keep the individual strands of wire in one direction for easy wire routing.One of the most common uses for wire trackers is to organize and keep all the wires in one direction on a multistrand cable, as seen below:A typical use for these tools is to make sure that every single strand of wire can be routed together without having to untangle them or repeatedly check that they are properly connected.The application of wire trackerWiretracker is a device that has been used to create wire coat hangers and this tool is most often used in the manufacturing industry. It is also being used in construction and manufacturing industries. In the past, it was not possible to predict how much wire was needed for a particular project, but now with wire tracker it is possible to do so.Wire tracker makes sure that the process of production remains accurate by providing accurate data about the length of wire required for each stage.Wiretracker has made its way into many fields other than just manufacturing. For example, hospitals use it when they need to build their wards or construct space frames for their buildings.
The Best Wire Tracker for High Performance Monitoring
The Best Wire Tracker for High Performance Monitoring
The introduction of wire trackerWire tracker is a future trend in online advertising and it will become more and more popular. It announces the ad creative for your target audience which they can see right when they click on the ad. This step helps you to get better conversions than before as you know that your ad is already working for your product or service, making it easier to persuade them to buy from you.Tips for wire trackerA wire tracker is an application that allows you to keep a record of all the contacts that you receive from your clients. It allows you to track them and create a report on them in order to learn what they like and dislike in order to increase your productivity.The main reason for using a wire tracker is by increasing the efficiency of your work by making sure that your clients are contacting you with the right content. To be able to do this, use software like WireTracker (available for iOS and Android).How to use wire tracker?The purpose of this section is to describe how an AI wire tracker can be used.The specifications of wire trackerWe are all familiar with wire tracking, its purpose is to track when the customer is online and what they are doing while they are online. But, what if we could help our customers understand exactly how their product works? What would happen if we could create a detailed visual representation of a product's functionality that our customers can understand exactly by studying it?The goal of this article is to highlight the capabilities and limitations of wire tracking. By using a combination of computer vision and machine learning techniques, we can create interactive visual representations of products that show in-depth information on their functions. By combining these features into one tool, we will be able to make more complex visual representations for our customers.The product instructions of wire trackerThis is a great example of how AI-assisted product instructions can make products look more appealing to their potential buyers.The application of wire trackerA wire tracker is a computer program that records information about the sending and receiving of emails. This information can be used to recover the sender’s email address, order address, email subject and keywords.
Principle of Buried Cable Fault Tester
Principle of Buried Cable Fault Tester
Compared with buried wires, buried wires and cables have been used in China for decades. The buried cable fault tester has developed from resistor bridge, capacitor bridge detection and standing wave detection at the beginning of Zui to flashover detection. The development trend of instruments and equipment has experienced the flash detector for general oscilloscope tube display information and the flash detector for storing oscilloscope tube display information. Up to now, intelligent instruments and equipment have been developed, produced and manufactured. The buried cable fault tester adopts large-scale integrated circuit chip, electronic computer solution technology, LCD display technology and other new technology applications, new technologies and new processes. After the wire and cable testing equipment is improved, the common faults of ground buried double eyelid are detected, which has good practical effect and high efficiency. After many practical activities, the common faults of a buried cable double eyelid are generally detected. The buried cable fault tester has a high success rate within 30 minutes from the beginning to the end. Principle of buried cable fault tester 1. The buried cable fault tester uses a unique acoustic frequency vibration sensor and low-noise special components as external components, which further improves the sensitivity of instrument and equipment designation and relative path detection. In terms of signal analysis technology, the distance between the common fault points of digital display information and the sensor technology camera greatly eliminates the one sidedness of designation. 2. When detecting the fault of buried cable, the common fault cable in the empty frame in the cable trench. In the past, the vibration sound of the whole cable makes all the designated instruments helpless, and it is impossible to judge the specific address of the closed common fault. Now, if the controller camera of the instrument touches the common fault cable or the nearby cable line, the information can be directly displayed, and the common fault spacing and orientation can be quickly identified without effort. 3. Based on the basic theory of DC response cancellation and high DC notch technology, the buried cable fault tester greatly improves the suppression and anti-interference of 50Hz DC data signal in the natural environment of strong power frequency electric field, and reduces the specified blind spot. In terms of the function of instruments and equipment, the acousto-electric technology is used to accept the photoelectric technology, which reasonably gets rid of the difficult problem caused by the impact of natural environmental noise on the designated site. In particular, the large digital display information of common fault spacing eliminates the operator's specific analysis of complex wave type, and replaces the rough distance measurement function of flash detector to a considerable extent. For the common fault cable hundreds of meters long, the designation can be carried out without rough measurement, which is truly efficient, rapid and accurate. Using 15z amplitude modulation radio wave and amplitude detection technology for relative path detection and deep measurement of cable laying, the influence of TV line frequency on the designated instrument in the original equal amplitude 15z video signal is prevented. 4. The fault detection of buried cable is very simple in practical operation. You can turn on the main power switch without shifting gears and selecting functions. Compact structure, exquisite and modular design, which is conducive to on-board maintenance and complete functions. Buried cables are widely used in recent years. Therefore, there are many ways of buried cable fault tester, which are not well understood by rural welders and repair and test workers. There are common faults in the ground buried line. If there are no excellent instruments and equipment and good test standards, the common faults can not be removed within the service guarantee period of the power supply system company, which not only delays time and wastes human resources. And affect normal life and industrial production.
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.
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