What Is Cat 5 Cable Checker?

What Is Cat 5 Cable Checker?

2021-10-10
NOYAFA
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cat 5 cable checker is developed by SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED for enhancing the corporate status in the market. Thanks to our designers' day-and-night effort, the product presents a perfect marketing effect with its appealing design style. It has a promising market prospect for its unique design. In addition, it comes with guaranteed quality. It is produced by the most advanced machines and adopts the state-of-the-art technology, which attributes to the realization of its strong functionality characteristics.All NOYAFA branded products have received a good market response since launched. With tremendous market potential, they are bound to increase the profitability of our customers. As a result, a number of major brands rely on us to make positive impressions, strengthen relationships and maximize sales. These products experience high volumes of repeat customer business.With Best Cable Tester Supplier in China _ Noyafa, we guarantee the response time of product support for cat 5 cable checker to ensure customers always get a fast response to the problems. We are not perfect, but perfection is our goal.
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Model Prototyping and OXO Electric Screwdriver
Model Prototyping and OXO Electric Screwdriver
This project is part of a UX Prototyping class that involves weekly prototyping challenge.ChallengeCreate a two model prototypes of an electric screw driver for OXO. First create a quick and rough cardboard model to visualize the placement of controls and functionality. The second prototype will be higher fidelity with a strong focus on ergonomics.The electric screw drivers must have the following variable speed control mechanism/interaction for changing between speeds screw-driver selection mechanism allows you to automatically select and switch between either Phillips or flathead shape and five different sizes of each shape. direction selection mechanism (non-digital) to either screw in or unscrew digital readout (monochromatic, non-touch sensitive) Displays number of screws screwed and screws unscrewed for tracking your progress as a handyman/handywoman. can be used right or left-handed product dimensions are a minimum of 6 inches long 2.5 inch x 2.5 inch battery with charge port attached product weight is between 11.5 poundsResearchBefore ideating, I researched the OXO company brand and their products. OXO is known for their signature non-slip and comfortable handles. They are advocates for universal and easy to use products for everyone.Looking closely at the product handles they have similar round rubber handles that are sized appropriately to the average grip. The paddle and plow handles in Figure 1 are good example of OXOs comfortable handles. The plow has curves that leverage a persons thrust. I took inspirations from these designs into the model prototypes handles. Design: 1st ModelThe priority of the screwdriver was the comfort of the grip, so I focused on the handle first and then designed the rest of the screw driver around it. I used a similar angled handle on the screw driver like the plow above. This angled handle fit the natural angle of the human hand. In this position users could comfortably hold the screw head level and apply weight without straining the wrist. Influenced by the OXOs ease of use I placed the majority of the functionality near the handle. I placed scroll wheels to change the speed and direction of the drill within comfortable reach of the thumb. The digital read out is also close the grip. I added a reset button for the read out right below the screen. Lastly, I used a screw-driver selection mechanism that can be changed by first pulling out the head of the screw driver and the twisting it to a different size and shape. Feedback: 1st ModelAfter completing the first model I received critique from two peers. I specifically asked for feedback on three criterions: comfort, ease of use, and ease of access to controls. The table below summarizes their feedback. This feedback guided redesigns for the second model.Design: 2nd ModelTo address the negative feedback I focused on fixing three things- Longer handle with added weight and better grip- Curved elbow between handle and base- Clear instructions for changing screw driver size and shapeBefore I drafted these changes, I visited the art store to look for materials that would give me freedom to form the grip well. I then drafted a redesigned screwdriver that addressed the feedback. I spent most of the time forming the foam that made up the grip and controls on the elbow. I then added clay to give the grip better shape and add weight to it. I used foam stickers and markings to emphasize buttons and functions of the screwdriver. ModelPrototype. mp4Edit descriptiondrive. google. comFeedback: 1st ModelAn in class critique session helped evaluate the usability and comfort of the screwdriver. I got good reviews from most of my class mates with suggestions on small design choices.IN/OUT for digital read out isnt as clear as Screwed/UnscrewedThe screw-driver selection mechanism is confusing. The large red arrow misleading because it is on the part of the screwdriver that doesnt moveThe prototype is balanced but too light to get a good sense of how it would be usedLessons LearnedI enjoyed the challenge making these two models out of random materials and learning a few lessons in process.Iterating and testing provides valuable feedback and a better product.Weight is important for testing how the real prototype would feelEveryone has different bodies so it is important to test ergonomics with many people. RELATED QUESTION Why are courier packaging bags so popular? Courier packaging bags also known as tamper proof courier bags or security bags are the packaging material of choice for a variety of reasons. A few of the most important reasons for their popularity is : Versatility - These bags work for almost every kind of industry, since they can be fabricated to any size required - big or small. Environment Proof - These bags are made of plastic and hence are protected from environmental factors such as dirt , moisture , dust, water etc. Easy to Use - All you have to do is place the item inside and close the bag, no advance machinery required :) Tamper proof features - These bags have mechanisms in built into the bag that help detect any kind of tampering or pilferage during transit. Easy to brand - These bags can be branded in low quantities and customised courier bags have become the staple for every eCommerce startup looking to scale quickly. Budget Friendly - Probable the biggest reason for their popularity. These bags are available for a very budget friendly price, that is a big lure for companies looking to improve their bottom line. I hope this quick list helps :)
What to Know Before Using the Pipeline Detector
What to Know Before Using the Pipeline Detector
If the power system wants to operate stably, the power cable really needs special attention. Cable is the main bearing tool in the power system. During the use of cable, it may be affected by various factors, resulting in failure, which needs to be repaired in time. Cables are buried underground, so special detection tools are needed to quickly find out the fault point, so that the staff can repair them in time. Pipeline detector is a common cable fault detection equipment. Today, we mainly introduce the problems that should be understood before using the pipeline detector. Today, Xiaobian will give you a detailed introduction to the relevant knowledge you need to know before using the pipeline detector. Friends who want to know will follow Xiaobian's introduction. 1. Graphic display is adopted, which can continuously and real-time display various parameters and signal strength in the detection process. 2. When measuring the depth, it will automatically switch to the dual horizontal antenna mode and automatically adjust the sensitivity of the receiver to optimize the measurement signal. After sounding, it will automatically return to the working mode before sounding. 3. Single horizontal antenna, double horizontal antenna and vertical antenna are used to mutually verify the accuracy of pipeline measurement. 4. It has a variety of depth measurement methods: double coil direct reading method and 70% method; Single coil 80% method, 50% method and 45 degree angle method. 5. High sensitivity, strong anti-interference and accurate positioning. 6. Function of multimeter: test the continuity and insulation quality of cable before and after cable fault finding. Internal structure of pipeline detector: 1. Transmitter: apply a special frequency signal current to the tested pipeline. Generally, three excitation modes are adopted: direct connection method, induction method and clamp method. Transmitter technical parameters injection mode: 480HZ, 31khz induction Clamp mode 31khz output voltage 0-400vp-p automatically / manually adjust the output waveform sine wave power supply 12VDC 4.5ah lithium battery maximum output power 10W 2. Receiver: the receiver has a built-in induction coil to receive the magnetic field signal of the pipeline, and the coil generates induced current, so as to calculate the direction and path of the pipeline. 2. There are generally three receiving modes: peak mode (maximum), valley mode (minimum) and wide peak mode; In addition, more advanced instruments now generally have peak arrow mode (which combines the advantages of peak and valley values to make the operation more intuitive) and compass guidance (used to indicate the direction of the pipeline). 3. Technical parameters of receiver: receiving sensitivity i100 & mu; A@1M Defense against 50Hz Interference & Ge; 100dB power consumption & lt; 1.0W power supply, 12V 1.5Ah lithium battery, maximum test burial depth of 4.5m, test burial depth error, ± 0.05h± 5cm (H is the buried depth of the optical cable) test the route error 5cm, test the insulation degree of the line 25m & omega; The effective length of pipeline route and buried depth tested by injection method shall not be less than 20km (under normal conditions). 4. Use the induction method to test the line route and buried depth, and the effective length shall not be less than 3km (under normal conditions). Note: under normal conditions, it means that the tested pipeline has no insulation fault and other interference within the above measurement range.
Search-Engine Optimized Wire Tester
Search-Engine Optimized Wire Tester
Automated Wire Tester (AWT) is a program that provides users with the ability to capture and test their IT systems. With it, they can troubleshoot and fix any potential issues on their network.Wire tester is a software that can test the communication between your computer and a web server. The software is used by people who need to keep an eye on their website visitors, or for website developers who need to monitor the traffic of specific pages.Wire Testers are used when an organization needs to test their product. Sometimes these testers are not fully comfortable with their skillsets, or they feel that there is no other way to test their product than by spending money on a professional tester.A wire tester is a person who tests frequently in order to see if the product works as expected and meets the customers’ needs. They usually work with computers and networks which can be either local or remote. They can be paid professionals, self-employed individuals, students or freelancers.Wire testers should have technical skills related to computer programming languages like C# and .NET Framework (Windows/MS). In addition, they must have experience of using automation software like Java and .How can an individual be a successful professionally?A custom IT project is the perfect way to test-drive a software solution. It's a chance to see if it works on different types of devices and environments. And it's cheap: thanks to automated testing, you can test any kind of software and hardware solution in a matter of minutes.With the help of automated wire testers, IT is able to create software or systems with more flexibility.The goal is to create software that improves productivity and facilitates work flow. These project management tools provide clients with a system for sorting out the tasks they need to perform throughout their workflow, and then tracking exactly how much time they spend on each task or each action, thus making them accountable for their timing and results.Using an automated wire tester, both the author and the client can create custom IT projects with ease. The wire tester is a piece of software developed by a professional computer engineer. It takes as input bytes from an application or text file, populates the variables that are available in it and produces results that are more understandable to the end user.These automated wire testers are used by most of the IT companies for testing their applications and infrastructure in order to ensure maximum uptime of their servers over time.As a writer, you should be able to quickly get the necessary information of your content. This can be done using wire testers which are basically software applications that help you get the information you need. You can use them to search and find out the content ideas by using keywords or titles.Wire tester software is a tool used to test any kind of network connection. They are the ones who can test it for security and some other purposes. In IT industry, they also test the performance of servers and client computers.A custom IT project is a specific set of requirements for the development of an application, which can be developed by laying down requirements and creating test cases.Automated wire testers are becoming more and more popular as they are able to quickly test a part of an application. These machines may be used by developers to create their own prototypes without changing the source code or adding any new features.It is widely known that IT projects take many months to become a reality. They are not just about creating new servers, upgrading or replacing software, but also include many other tasks such as selecting the software to be installed on servers and new user accounts. These things need to be done by IT professionals that have relevant experience in their field.Automated Wire Tester will create custom IT projects for you and automate everything around it for you, eliminating manual tasks and making sure your project is delivered on time. It will also provide integration with current systems and reporting features making it easy to manage your project from your end.The best wire tester software is the one which is used for testing the main communication channels of an organization and understanding their interactions.
Function of Underground Pipeline Detector in Cable Maintenance
Function of Underground Pipeline Detector in Cable Maintenance
Surface water pipelines refer to water supply, drainage (rainwater, sewage), gas, electric power, communication, heating, industrial and other pipelines. It is an important part of urban infrastructure and the basic basis of urban planning, construction and management. At present, the electromagnetic method based on the law of electromagnetic induction is the most convenient, effective and commonly used in the detection of underground pipelines. Underground pipeline detector is one such device. The receiver measures the change of the secondary field generated by the underground pipeline under the action of the transmitting airport on the ground, so as to judge the spatial position of the underground pipeline. It is generally believed that the secondary field excited by a straight line can be regarded as the electromagnetic field generated by an infinite straight line. The receiving device locates the pipeline and determines the depth according to such electromagnetic field changes. The experimental results show that the measurement results are very accurate without the interference of other pipeline fields. In order to detect pipelines accurately, quickly and efficiently, different detection methods should be selected according to the characteristics of underground pipelines. The buried pipe detector uses the principle of electromagnetic induction to detect the precise direction and depth of underground metal pipelines and cables, and find out the fault points outside the pipeline. The buried pipe detector has the functions of intelligent, graphic operation indication and audio modulation indication of all Chinese characters. It is the most convenient buried pipe detector. The built-in ohmmeter of the transmitter can automatically measure the loop resistance and automatically match the continuous output impedance to ensure the excellent output signal. The instrument can select the coupling according to the needs of practical application. Under the condition of continuous power supply, it can be used to find the path of live cable for testing. Using the 50Hz detection function of the receiver, it can also track the 50Hz power frequency signal sent by the running cable, truly achieve one machine with multiple functions, and has the best performance and cost performance. Its basic working principle is that the transmitter generates electromagnetic wave and transmits the transmitted signal to the detected underground metal pipeline through different transmission connection modes. When the underground metal pipeline senses electromagnetic wave, induced current is generated on its surface, and the induced current propagates far along the metal pipeline. In the process of current propagation, The electromagnetic wave is radiated to the ground through the underground metal pipeline. Therefore, when the underground pipeline detector detects on the ground, the electromagnetic wave signal will be received on the ground directly above the underground metal pipeline. Through the change of signal strength, the position and direction of the underground metal pipeline can be judged. According to the detection principle, underground pipeline detectors are divided into two categories. One is to detect metal markings in metal pipelines, electric / optical cables and some non-metallic pipelines by using the principle of electromagnetic induction, which is called pipeline detectors for short; The other is the use of electromagnetic waves to detect underground pipelines of various materials, which can also be used to find buried objects, commonly known as radar or pipeline radar.
Things You May Want to Know About Tester
Things You May Want to Know About Tester
An overview of testerRichard Alexander Bevan (14 July 1834 - 18 February 1918) was a British banker and philanthropist. He is known as "the father of Cuckfield."Certifications of testerThe ANZTB offers the following certifications:ISTQB Foundation CTFLISTQB Foundation Performance Tester CTFL-PERISTQB Foundation Model Based Tester CTFL-MBTASTQB Certified Mobile Tester CMTISTQB Foundation Usability Tester CTFL-UTISTQB Advanced Test Manager CTAL-ATMISTQB Advanced Test Analyst CTAL-ATAISTQB Advanced Technical Test Analyst CTAL-TTAISTQB Advanced Test Automation Engineer CTAL-TAEISTQB Advanced Security Tester CTAL-STThe contents of each syllabus are taught as courses delivered by ISTQB Accredited Training Providers. They are globally marketed under the brand name "ISTQB Certified Tester".After the examination, each successful participant receives the "ISTQB/ANZTB Certified Tester" Certificate.What diagnostic tester can I use to check for a shortage or burned wire.?S&G Tool Aid Heavy Duty Circuit Testers w/Retractable Wire - 6"" Features an extra long wire that stretches up to 12 feet for use, then automatically retracts. Rating: No user ratings [rate this item] See All Tools | See More Like This Amazon Find Other Tools...• Like this One• By S&G Tool Aid• From Amazon• In this Price Range (around $15) $14.94Buy at Seller S&G Tool Aid Heavy Duty Circuit Testers w/Retractable Wire - 3-1/2"" Features an extra long wire that stretches up to 12 feet for use, then automatically retracts. Rating: No user ratings [rate this item] See All Tools | See More Like This Amazon Find Other Tools...• Like this One• By S&G Tool Aid• From Amazon• In this Price Range (around $14) $14.44Buy at Seller Lisle Spark Tester Tests Spark Plugs, Spark Plug Wires and Coils Without Puncturing the Wire. With the engine running, place the grooved end of the tool over the plug wire. Rating: No user ratings [rate this item] See All Automotive Amazon $6.31Buy at Seller Continuity Tester/Pocket Flashlight This Combination Continuity Tester Flashlight instantly tests fuses, extension cords, switches, sockets, short curcuits, broken wires, faulty appliances, auto circuits, etc. Rating: No user ratings [rate this item] See All Tools | See More Like This classicgarage Find Other Tools...• Like this One• From classicgarage• In this Price Range (around $6) Related Searches:• continuity tester $6.50Buy at Seller Extra Long Circuit Tester For use on cars, RV, trucks, motorcycles, and snowmobiles Use to check electrical circuits and accessories Wire stretches to 12 ft. for use, then automatically retracts Probe... Rating: No user ratings [rate this item] See All Tools | See More Like This classicgarage Find Other Tools...• Like this One• From classicgarage• In this Price Range (around $12) $11.96Buy at Seller LED Circuit Tester ACTRON LED CIRCUIT TESTER One compact, convenient tool tests spark plus wires and more! Rating: No user ratings See All Parts | See More Like This JC Whitney Find Other Parts...• Like this One• From JC Whitney• In this Price Range (around $15)• With Attention Needed: Short Title• With Type: Electrical Systems $14.99Compare Prices Spark Tester and Indicator LISLE INLINE SPARK TESTER AND SPARK INDICATOR Two easy-to-use, affordable tools designed to check the ignition system and spark plugs, coils and wires. Rating: No user ratings See All Automotive JC Whitney $16.99Compare Prices Grip 20072 Extra Long Heavy Duty Circuit Tester For use on caers, RV, trucks, motorcycles, and snowmobiles Use to check electrical circuits and accessories Wire stretches to 12 ft. for use, then automatically retracts ... Rating: No user ratings [rate this item] See All Tools | See More Like This Tool King Find Other Tools...• Like this One• From Tool King• In this Price Range (around $14) $13.99Buy at Seller Performance W5207 Multi-Use Repair Kit Great for use on automotive, marine, industrial and agricultural applications Contains: Wire crimping tool, 6-12 Volt tester, slotted screwdriver, Phillips screwdriver, blade... Rating: No user ratings [rate this item] See All Tools | See More Like This Tool King Find Other Tools...• Like this One• From Tool King• In this Price Range (around $22)• With Type: Electrical Systems $21.99Buy at Seller Lisle Electrical Circuit Tester The ''Handy Hooker'' Circuit Tester is made with a hooded probe that protects your fingers and automatically centers the wire. Rating: No user ratings [rate this item] See All Automotive Amazon
Theory of Cable Fault Locator
Theory 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!
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.
What Are the Fault Finding Methods for Rural Buried Cables
What Are the Fault Finding Methods for Rural Buried Cables
After a fault occurs in an underground cable, it is generally necessary to make a preliminary judgment on the nature of the fault. Then, according to the fault type, the appropriate fault location method is adopted to preliminarily locate the fault point; Finally, along the direction of the buried cable, carefully detect the fixed point before and after the position until the accurate position of the fault point is found, so as to realize the fault maintenance of the buried cable. Today, let's learn about the fault finding method of buried cables in rural areas. 1、 Analysis and judgment method before finding the fault of rural buried cable, it is generally necessary to understand the relevant situation of the fault, then conduct comprehensive analysis, find out the cause of the fault, and then find and eliminate it pertinently. For example, finding informed parties such as constructors, wire users and other relevant personnel to understand the situation in detail may often eliminate the fault in the shortest time at a small cost. The advantages of analysis and judgment are simple and easy, no complex instruments are required, and some faults can be eliminated in time. Therefore, it is difficult to eliminate it quickly by this method. For buried wires with a length of more than 100 meters, the fault can be found by human analysis and judgment without instruments. Sometimes, it takes more than a dozen times to excavate, and it is difficult to find the fault point in more than ten days. Sometimes, it will damage other wires in the same trench and cause new faults. This method is generally not used alone, but in combination with other instrument detection methods. The failure of buried wires is caused by the following reasons: 1. External force damage: it is the main cause of the failure. For example, repeated construction above buried lines, laying water pipes, building canals, planting trees, building buildings, etc. are often very easy to damage the buried wire insulation layer, resulting in wire breaking fault or grounding fault. 2. Joint failure: due to the nonstandard joint process during construction, it is very easy to cause mechanical damage at the joint. Or there are problems such as large contact resistance and poor insulation at the joint. After the wire runs under load for a period of time, the hidden danger at the joint often causes wire breakage or grounding fault 3. Nonstandard laying: there shall be strict process requirements when laying buried wires. However, due to the large workload, wide range and shortage of personnel in rural power network transformation, there are often some non-standard construction behaviors in some areas in the construction of buried lines. For example, when the trench is backfilled, the spinning soil is not used, and the soil block containing gravel is directly backfilled, which is very easy to damage the insulating layer. 2、 The simple ground fault tester is used to test faults. At present, many brands of ground fault testers on the market have similar working principles and test methods. Its working principle is: a fixed voltage signal is applied to the grounding wire, and an electric field is formed on the ground around the grounding point. The closer it is to the fault point, the greater the potential difference between the same distance, and vice versa. According to this principle, the ground fault point can be found. The market price of this kind of test instrument is hundreds to thousands of yuan. The buried wire fault with very small grounding resistance can achieve the test purpose. The fault finding method of rural buried cable is introduced here. I hope you can use it in your work.
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