NOYAFA's Fiber Cable Tester

NOYAFA's Fiber Cable Tester

2021-10-22
NOYAFA
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fiber cable tester is delicately produced by using the state-of-the-art technology and the modern advanced equipment. With the surging global demand for this product, SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED has already phased out a batch of production equipment and is internationally sourced the most efficient and advanced equipment in order to provide customers with the product that meets or even exceed the international standards.NOYAFA products are all delivered with the remarkable quality, including the performance of stability and durability. We have been dedicating to the quality first and aim to improve customer satisfaction. So far, we have accumulated a large customer base thanks to the word-of-mouth. Many customers recommended by our regular business partners contact us that they would love to visit our factory and establish a long-term partnership with us.Customer service is an important part of maintaining ongoing client relationships. At Best Cable Tester Supplier in China _ Noyafa, customers not only can find a wide variety of products, including fiber cable tester but also can find many considerate services, including helpful suggestions, high-quality customization, efficient delivery, etc.
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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!
Best Wire Tracker to Cut, Tame,& Protect Home Wires
Best Wire Tracker to Cut, Tame,& Protect Home Wires
The introduction of wire trackerWire tracker is a robotic and autonomous material handling system that helps to automate the manual process of tying wire bundles. With the help of this machine, wire bundles are automatically wrapped around a bundle wrapping machine to be transported.Wire tracker saves time and manpower by decreasing material handling cost and increasing productivity. It also increases efficiency by automating the manual process of tying wire bundles. This system has many benefits in terms of safety as well as environmental impact.With the introduction of this machine, the automation process improves labor efficiency as well as safety in various applications such as power lines, water lines, solar panels, etc. Wire tracker reduces environmental impact by decreasing fuel consumption and greenhouse gas emissions from forklifts and trucks for transportation purposes.Tips for wire trackerWire trackers are among the most vital part of any electronics assembly or electronics manufacturing. They are responsible for accurately locating and tracking the wires on an electronic device during a production run.Wire tracking is not just about precision and accuracy - it’s also about efficient use of time, so a wire tracker needs to be able to handle multiple tasks at once.In this article, we will highlight some tips for finding the best wire tracking machines for your production facility.For starters, you need to decide what type of wire tracker you want. There are two main types: manual and automatic wire trackers. The former is more precise but it requires more time-consuming set-up while the latter can be adjusted easily from one machine type to another but they require more investments in automation equipmentHow to use wire tracker?Wire trackers are used by wire-tracing artists to work on creating their designs. They use a variety of tools such as wire, pens, paper and cardboard to create artworks.The process is similar to crocheting or weaving one fiber at a time. The artist has to form the wire into different shapes and coils. To start working with the wire, the artist needs to take it out of its packaging and unravel it from its plastic casing. This process is done by pulling it through one’s fingers and wrapping it around the hand until it forms a coil that they can continue working on.The specifications of wire trackerWire trackers are a tool used in the wire trade to ensure that items are accurately transported and separated. They work by allowing items to pass through a narrow slot without getting stuck.Wire trackers come in various shapes and sizes, but all of them are made from steel with a smooth-walled interior. The surface of them is not very rough, which makes it difficult to hook or grab the item by mistake.Wire trackers have many uses across the different industries. They can be found at airports, factories, warehouses, shopping malls, libraries and other places where valuable goods need safe transport.The product instructions of wire trackerWire trackers are the most widely used DIY tool in home improvement projects. They are used to hold wires, pipes, and cables.The instructions for using wire trackers are simple - however there is still an overwhelming number of problems that people have with them. It is important for manufacturers to make sure that their product instructions are easy to understand and don't include any spelling mistakes or grammatical mistakes.This section discusses how product instructions can be improved by AI writing assistants so that they can become more effective in improving the user experience.The application of wire trackerWire tracking is the process by which a wire is used to measure the progress of a drill.Wire tracking systems enable drill operators to easily and quickly set up their own equipment and work, keeping them safe. It also ensures greater efficiency and accuracy with each drilling job.Wire tracking allows for an increased level of control over drilling operations, which makes it perfect for high-quality production jobs where quality control is important
How Screwdriver Organizers Are Advantageous?
How Screwdriver Organizers Are Advantageous?
Screwdriver Organizer is a compact provision to keep different types of screwdrivers organized in one place. It is really difficult for the electricians, technicians, mechanics, and automobile engineers to keep their tools safe and away from theft and misplaced. Mostly technicians suffer from the theft or loss of screwdrivers as it is not possible for them to keep surveillance on their tools all the time. And that is why an organizer plays a great role in changing this scenario.What is Screwdriver?It is a manual or powered tool used for rolling the screw in or for rolling the screw out from the object. Screwdrivers are made of different metals as if, iron, steel, stainless steel, aluminum, etc. These tools come in different sizes and cuts on its tip point.Benefits of Organizer:-Easy to CarryScrewdriver Organizer is an easy to carry option for any individual of any weight and size. Some of the organizers are available in the market with rollers on the bottoms which makes it easier to carry bulk tools. Safer ProvisionIn this carrying, case screwdrivers can be kept safe for a long time because there are different segments designed as per the size of the tools. So, there are fewer chances of damage.Smart ManagementThese organizers are well known for smart management of the screwdrivers as the outer casing is designed solid and its internal design is apt for any sort of tool to be kept gripped.Space OptimizationAvailable space is properly optimized in these organizers as different types of cuts and strap cuts are made to hold and pick the screwdrivers easily. Each inch and the edge are used smartly to fix different sized tools.Neat & Clean ToolsBy keeping your tools in this type of organizer, you actually opt for the neat and clean maintenance of your tools.Long-Term SolutionIt is considered to be a long-term solution among all the users in the global market now, as it provides a safe casing for all your tools and equipment for the long-run which actually increases the life of screwdrivers. Smart InvestmentBuying an organizer will be a smart investment for one and all as it will keep your tools in good condition and next time when you will need your tools, it will be readily available.Screwdriver organizer has made life easy for all the technicians and mechanics forever
Brief Introduction of Power Cable Fault Tester
Brief Introduction of Power Cable Fault Tester
Brief introduction of power cable fault tester power cable fault tester is a special cable detection equipment used to solve the test of open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the * * test of open circuit and short circuit faults of coaxial communication cables and local telephone cables. It can also test the cable path, buried depth, radio wave velocity, verify the cable length, and establish cable files for daily maintenance and management. Brief introduction power cable fault tester is applied to various industries such as power, communication, petrochemical industry, coal mine, metallurgy, aerospace and so on. Xi'an cable fault tester is a pioneer in the field of cable fault testing. Based on the industrial embedded computer platform system, the advanced network and digital communication technology are adopted, which greatly improves the use function and test accuracy of the instrument. As we all know, no matter the high resistance fault or the rear * * point of the cable, it is inseparable from the special booster device for cable fault detection. In the past, the test transformer, operation box and pulse capacitor were used to boost the voltage, which has the disadvantages of bulkiness and complex wiring. The cable fault high-voltage signal generator solved this problem and made the cable fault detection portable, This * * improvement has been highly praised by the industry. Dear customers: the company also has underground pipeline detector, high-voltage cable fault tester and cable fault locator products. You can call the company's service phone through the website to learn more product details. Perfect and beautiful service is our pursuit. New and old customers are welcome to buy their favorite products at ease. We will serve you wholeheartedly!
How to Choose Fiber Optical Tester
How to Choose Fiber Optical Tester
Transmitter and receiver jack are fiber optic connectors that measure the power of the transmitter by connecting the test cable to the source and measuring power at the other end. The receiver is the one who disconnects the cable attached to the receiver jacks and measures the output with one meter.Other methods of testing fibre optic connections include starting the cable from the receiving cable and connecting it to an electricity meter. The standard loss test is an installed cable system that includes loss measurement to test the cable connection at each end. If you can, you can measure the loss from a connector connected to a reference cable, a loss fiber connection, or any other connector on the cable you want to test.This allows you to measure the two lost connectors at one end and the loss from cable to cable. The source counter duplicates the transmitter and receiver of the fiber-optic transmission connection, so that the measurements correlate with the actual system loss. The optical return loss (ORL) is expressed in decibels (dB) and affects how the light source or fiber reduces the data transmission speed.The optical time domain reflectionometer (OTDR) is used as a fiber optic cable tester to test optical losses. Using a high intensity laser light that emits a predefined pulse interval and is connected to the cable at one end, the cable is guided through an OTDR to analyze the backscattering of the light returning to the source location. A simple instrument that injects visible light is called a fiber tracer or visual fault locating mechanism.Calibrated optical light sources (OLs) can be used with an optical power meter (OPM) in conjunction with an OPM to quantify the insertion loss of the members during powering on. An important test of loss of input in an installed fiber optic cable system is performed with a light source power meter (LSPM), while an optical loss test kit (OLT) is required as an international standard to ensure that the system has a loss budget for acceptance and installation. The OLT, which uses both optical light sources and power meters, is considered the best fiber test practice to ensure the optical power budget and design specifications.Two devices are required to test the end-to-end performance of a fiber optic system: an OPM test and a light source. The testing of optical fibres requires special tools and instruments to select the appropriate components for the cable system to be tested. The source of the power meter, the optical loss test kit (OLT) and the appropriate device adapter are the cables and equipment you will test.Outside the fiber system, cables with an OTDR are tested for end-to-end losses to ensure that the installation is carried out correctly. The OTDR can also be used for troubleshooting, e.g. Interruptions in places due to excavations. Installers are often asked to use a loss test set up with a source current meter and OtDR to perform bidirectional tests, provide accurate cable documentation and certify their work.This video gives you a clear test procedure for fiber power meters and shows you how to test fiber adoption losses with two fiber optic test devices. Testing light sources of power meters is also known as the One-Jumper method as the most accurate way to measure the end-to-end signal loss in the fiber known as attenuation. If the light source operates at a wavelength of 1310 nm, for example, the optical power meter is set to 1310 for testing.The OLT Optical Loss Test Kit is a mainstay in the testing of fiber optic cables as it provides a precise method for the total loss of a connection as required by industry standards to ensure that the connection meets the loss requirements of a particular application. When fiber optic cables are in the facility, you need to test for continuity and end-to-end losses to resolve problems. Regardless of whether it is a long installation cable or an intermediate cable, you want to verify every single connection with an OTDR, because this is the only way to ensure that each one is good.Knowing how to select, install and maintain fiber optic cables is important to optimize system results. Combines fiber spectroscopic analysis systems to achieve optimal performance and results. Inline and flexible fiber-optic process analyzers and systems enable the user to place measuring probes at several points on one instrument, thereby reducing costs.Patented fiber constructions with emphasis on high-quality materials and spectroscopically guided waves are designed for high transmission efficiency and durability. The significant increase in the number of applications supporting data centres has resulted in more cable connections being established than ever before, and available space is a priority. Fusion splicing is used for FTTH applications to install connectors. Drop cable customers can use the new splice connector technology for fall cable fusion splicers.For example, expensive 10G certified Cat6A cables can be used instead of duplex fiber-optic cables, which require expensive transceivers. As a result, high-density solutions such as MTP / MPO connectors and multi-fiber cables, which require less wire space than single duplex cables, are becoming increasingly popular. While some manufacturers offer locally installed MTP and MPO connectors, many data center managers opt for Multi-Fiber Trunk Cable (MTP) or MPO (Factory Terminated End Fusion Splicing) or pre-terminated MTP (MPO) or Multi- Fiber LC Pigtails.They combine a fiber optic cable with a transceiver and eliminate the connectors. Fiber optic cables, also known as fiber optic cables, transmit data in light pulses through flexible pure fibers, glass or plastics. Thanks to their high data transmission speeds over long distances, they have become a popular choice for Ethernet networks and telecommunications applications.With thousands of connections, excessive slack leads to a lot of congestion, which restricts the proper airflow and cooling. An alternative is the purchase of multi-fiber pigtails that can be spliced into a multi-fiber cable. Sharp bends of 1.5 cm radius should be avoided, as they strain the fiber and cause optical losses.
A Brief Overview on the Lcd Cable Tester
A Brief Overview on the Lcd Cable Tester
It displays an "X" to indicate that the idle length is less than 90% of the other wires of the pair and length, and that it is 8.93 m from the tester. The open circuit is located between 10 and 90% of the cable length and is measured at the next end of the connector. Find the open circuits and the function of the pair / length tester using the details in this section.If the pair length measurement is performed under normal conditions, it will be displayed as shown below. The length measurement of the LCD cable tester can be performed under normal conditions and the display is shown below.To test the cable length, connect one end of the cable to the main tester. Always check the cable for errors such as idle, short circuit, reverse connection or crossover. Never use a cable length tester to test a live connection such as a 220 V power supply, as this can cause damage to equipment or people.The CableEye tester also detects diodes embedded in cables, so you can test and learn new cables. When you connect both ends of the cable to a network, the cable tester does the job and you get an accurate measurement of whether your cable is working or not.Simple diode connections are drawn with standard diode symbols, while complex diode networks appear as a floating list in the schematic window. Copper Technicians Kit (MS) POE Kit microscanner (tm) is a POE - - tester that displays available class 0-8-8023AT - POE devices, voltages, service-available passive POE sources, 10G Ethernet cable lengths, cable branches and error distances. The POE kit includes an Intellitone Pro 200 probe that receives active data from the cable via digital audio tracking, six remote controls that locate the cable to be tested and a magnetic suspension strap that allows you to hook the tester on a nearby magnetic surface or hook.MicroScanner2 MicroScanner Poe provides engineers with the vision to verify today's most common voice, data and video services. The MS2 kit Microscanner2 cable verifier displays a graphical wiremap of each pair (length, distance and error) on each end of the device. The MicroScanner series defies convention by displaying key test results, wiremap and cable ID on the other end of each device on a single screen.The next topic is, as in the previous TOC topic, the use of barcode scanners to meet the demand for greater data security and to ensure consistent and fast production tests.The section Settings provides general information about Advanced Cable Tester v2 with the ability to change the Core Settings. In this version new macro instructions include: wait scan (stead of pushbutton wait pb), enter operator name immediately, change operator macro timestamp to record date and time of test, database archive, open and resume log file, resume, add cable, create log file.The Settings section also displays information specific to the Advanced Cable Tester V2 device. The device name appears in the main navigation header of the advanced cable tester web application v2.As soon as the requirements are fulfilled, the Advanced Cable Tester v2 will start to be ready for operation. As soon as the device detects that the cable has been inserted into the two sockets, it enters the test state. When the cable connection module is removed, the device returns to its non-operational state and the user must select a test profile to continue the test.When a valid Cable Plug-In Module is installed and a valid test profile is selected, Advanced Cable Tester V2 is ready. As soon as it is ready, the cable tester runs the test profile until a cable is detected.Consumers can use the portable network cable tester with the cables RJ11, RJ12, RJ45, Cat 3, Cat 5E, Cat 6 and Cat6A. The broad compatibility of the device does not complicate your work in the analysis of cable connections.Selecting, selecting and purchasing a suitable network cable tester can be a complicated and challenging task. Purchasing the right network cable tester can save you a lot of inconvenience and trouble.To help you find the best network cable tester for your use I have compiled a list of test products that work well. I came across the Elegiant Network Cable Tester while working on establishing a LAN connection for a local company. With my extensive experience as an electrician, I can say that this is the best tool for testing cable connections.
Top 5 Best Wire Tracker
Top 5 Best Wire Tracker
With the right software, you can be sure that your content is safe.Data mining and artificial intelligence are the buzzwords of today's business. Salespeople are using these technologies to generate leads and to understand them better. But there is a big gap between the salespeople' needs and what the data mining tools can provide them. Most of these tools are geared towards one specific problem: customer segmentation. An intelligent sales assistant can help you optimize your data mining efforts by generating leads for a specific customer group based on attributes such as gender, age, location or some other criteria.The problem with many wire tracking software is that they are not as highly customisable as you would like them to be. They are also more prone to failure and censorship than other more advanced tools.This article tries to provide a comprehensive guide on what makes the best free wire tracker software for web designers, so that you can choose the one which will suit your needs.The best way to effectively track your content is by writing it on a wire.The best way to ensure that you capture the most important information about your clients is with a wire tracker.Wire trackers are used when you need to know what your customers are talking about on social networks, blogs, forums and so on. These applications can help you get insights into how people use your products. They can also be used for fraud prevention when installing or updating software on computers and smartphones.The best way to keep in touch with customers is through reviews that they leave on relevant websites. All these situations require some form of communication between the service provider and its users, but what if those who use those services are not necessarily in control of their own data? What if they don't have access to theirThe best wire tracker is the one that you are most comfortable with. It should be easy to use, fast and user-friendly.It is essential for salespeople to be able to track their prospects and clients. This has been a challenge for many years. Here we list the best tools available for this purpose.It is a tool to track all the email that you have sent to your clients.If you want to go viral, then you need to reach the right audience. This is where the best trackers come handy; they can use them to create a lot of targeted landing pages for your company's content.A wire tracker is a tool that can be used to track the progress of a project. The main purpose of this tool is to keep clients updated on all the communication between the client and the advertising agency. The Wire Tracker provides clients with an overview of every email, call, meeting and other interaction they have had with its associated team.Free wire tracker software is a useful tool to help you track the number of email messages sent to your inbox.It works by tracking all the emails that you have received in a particular period of time. It helps you to understand the level of engagement that your users have with your websites, apps and products.In-depth guide to the best free wire tracker software, including tips on what to look for, pros and cons of each one.There are a number of different free wire tracker software on the market today. But what makes a good one?Why do we need to know about the best free wire tracker software? How can we determine which is the best for us?What are some of the advantages of using a wire tracker software instead of a paid one? What makes them unique and which ones should you choose? And finally, if you would like to receive more information about this topic, we have put together our in-depth guide.Email to wiretracker is one of the most overlooked features that can help you get your message out in a timely fashion. It’s a great way to curate your list of prospects, track activity on social media, and maximize the efficiency of your marketing campaign.The best wire tracker is a simple and versatile tool that allows you to automate the content creation process.Wire tracker is used by writers to create content for their clients. It takes the text from an email, word processor or other media file and automatically generates a web page, blog post, tweet or any other type of content. Unlike Google Docs, it does not require any extra software on your computer. You can use it in one click without any technical knowledge. With Wire Tracker you can create all kinds of content with just a few clicks.
What Are the High Voltage Test Transformers_ Use of High Voltage Test Transformer
What Are the High Voltage Test Transformers_ Use of High Voltage Test Transformer
What is a high voltage test transformerHigh voltage tester refers to a kind of transformer that generates high voltage for high voltage test. High voltage test transformer has the characteristics of high voltage, small capacity, short continuous working time, thick insulation layer and usually one end of high voltage winding is grounded.High voltage test transformer is called test transformer for short. The test transformer is generally a step-up transformer. The test transformer uses the power frequency high voltage induced by the secondary side to test the insulation performance of various electrical products and insulating materials. Test transformer is an indispensable electrical equipment for withstand voltage test in the repair of motor, transformer and electrical products. The test transformer is mainly used for power frequency withstand voltage test of electrical products, partial discharge measurement, thermal stability test of insulating medium, etc; For medium and high frequency electrical equipment, special frequency test transformers can also be used for withstand voltage test and measurement of relevant electrical parameters.The primary and secondary windings of the test transformer have a large voltage ratio. The primary voltage is 0.4kV, 3KV, 6kV and 10kV. The secondary voltage can be made into 100 2000kv or higher, and the capacity can be 3 9000kva. For the field test of power equipment, the light test transformer is generally used; 50kV step-up test transformer is used for withstand voltage test of 6kV, 10kV transformers and other power equipment; For the withstand voltage test of high voltage, ultra-high voltage transformers and other power equipment with voltage level above 35kV, ultra-high voltage test transformers greater than 5 times the primary rated voltage of the tested equipment, such as step-up test transformers of 500kV, 700kv, 800kV and certain capacity level.Characteristics of high voltage test transformer1) High voltage: the primary voltage of the test transformer is 220V or 380V, but the secondary voltage of a single test transformer often reaches thousands to tens of thousands of volts. The test transformer with secondary voltage exceeding 750kV usually adopts multiple cascade structures.2) Small current: the rated current of the test transformer is actually the capacitive current of the tested object, so it is generally less than 1a. However, the secondary current of the test transformer used for cable and large motor test, external insulation pollution test, line corona test and other projects can reach several amps.3) Short working time: due to the short withstand voltage time of the tested product, the test transformer is generally 0.5h or 1H short-time working system except for external insulation pollution test, line corona test and cable test.4) The test transformers are generally single-phase and indoor devices (some are also made into outdoor devices): they are oil immersed self cooling structure, the winding insulation layer is thick, and one end of the high-voltage winding is usually grounded.5) The insulation level of the head and end of the secondary winding of the test transformer is different: the head end is high potential, and the end is directly grounded or grounded through an ammeter.6) High requirements for design and manufacturing process: due to the high working voltage, the insulation structure has a decisive impact on the overall size of the test transformer. Vacuum drying is generally required for the body, and vacuum oil injection is required for above 100kV.Classification of high voltage test transformers1) In terms of structure, there are iron shell type and insulated shell type test transformers.2) In terms of power frequency, there are several frequency level test transformers such as power frequency, frequency doubling, intermediate frequency and high frequency.3) According to the voltage level, it can be divided into low voltage, high voltage and ultra-high voltage test transformers.4) According to the use form, it can be divided into light mobile type and fixed type; There are also single use and two or more cascade use test transformers.The test transformer is generally single-phase and indoor devices, which are oil immersed self cooling structure. Because of its high working voltage, its winding insulation layer is thick, and one end of the high-voltage winding is grounded.The specific structural types of the test transformer generally include single bushing type, double bushing type and insulating cylinder type.Technical requirements for high voltage test transformer①Output voltage waveform. The output voltage waveform of the test transformer shall be close to the sine wave as far as possible. In order to reduce the voltage waveform distortion caused by the harmonic voltage generated by the harmonic component of no-load current passing through the impedance of voltage regulator and transformer, the magnetic flux density should be selected in the straight line section of core magnetization curve; At the same time, voltage regulating equipment with small waveform distortion shall be selected, and filter device can be added if necessary.② Impedance voltage. The secondary current of the test transformer is generally capacitive current. When the secondary current flows through the impedance of the voltage regulator and the test transformer, the output voltage will exceed the value determined by the voltage ratio. Therefore, the impedance voltage of the test transformer should not be too large, otherwise it may affect the accuracy of the test results and reduce the short-circuit capacity of the test equipment. However, if the impedance voltage is too small, the short-circuit current may increase when the test object breaks down or flashover. The impedance voltage of a single test transformer is generally 4.5 10%, and when multiple series transformers are formed, it can reach 30 40%.What are the high voltage test transformers1) DJ oil immersed high voltage test transformerOil immersed test transformer: large volume, heavy weight, large capacity, convenient maintenance and high maintenance cost in the later stage; Mainstream products.The oil immersed type is filled with 25# transformer oil, and the insulation cooling effect is the best2) GTB dry type high voltage test transformerDry type test transformer: maintenance free, light weight, small volume, inverted and high cost.3) Inflatable high voltage test transformerInflatable test transformer: it needs later maintenance, with good arc extinguishing performance, light weight and danger.The oil immersed type is filled with 25# transformer oil, and the insulation cooling effect is the best; Dry type has small volume and lightest weight, but the voltage is difficult to be high; The inflatable type is filled with SF6 gas.Application and operation method of AC / DC high voltage test transformerDuring the step-up or withstand voltage test of AC / DC high-voltage test transformer, if the following unusual conditions are found, the voltage shall be reduced immediately and the power supply shall be cut off. As of the experiment, the reasons have been found out: ①the pointer of the voltmeter swings greatly; ② The insulation of the invention burns or smokes; ③ There is unusual sound in the test object.Utilization and operation methods of AC / DC high voltage experimental transformer:1. Connect the power supply of the control box (console) and turn on the indicator light.2. Press the start button and the operation indicator light is on (otherwise, the voltage regulator is not in the zero position, please rotate the hand wheel of the voltage regulator to the zero position counterclockwise) indicating that the experimental operation can be stopped.3. Move the hand wheel of the voltage regulator clockwise to make the conditioning rate 2KV / s better, and watch the high-voltage meter rise to the required voltage value. For example, in the process of boosting, when the test object breaks down, short circuit and overcurrent occurs, the overcurrent relay acts to automatically cut off the power supply.4. If the experiment requests overcurrent control, adjust the overcurrent relay to the power supply current value required by the experiment in advance before operation, and the current relay will stop overcurrent protection according to the experiment request.5. While monitoring the high-voltage meter, an external 0.5-level voltmeter can be accepted at the instrument end for monitoring.6. Measure the insulation resistance and check the insulation condition before and after the withstand voltage test.
What Problems Will Be Encountered in the Use of Underground Pipeline Detector
What Problems Will Be Encountered in the Use of Underground Pipeline Detector
As a new type of intelligent stethoscope, underground pipeline detector is used to survey underground pipelines. It is composed of transmitter, receiver and accessories. It is mainly used for underground pipeline positioning, buried depth measurement and long-distance tracking, as well as pipeline insulation fault point measurement and search. The equipment adopts multi coil electromagnetic technology, which greatly improves its depth determination accuracy and target pipeline identification ability. It can accurately track and locate the target pipeline even in the area with dense and complex pipelines. However, due to the complexity and diversity of underground pipelines, a better method is to combine various technical methods for general survey. The common site conditions in the operation of underground pipeline detector are as follows: 1. Track from the joint or handover box. Before the cable applies the transmitter signal, the common connector on the cable needs to be removed to track the target pipe. If all cables are to be tracked from the junction box, the transmitter can work in an inductive manner, placed on one side of the junction box and in line with the cable to be tracked. 2. Long distance tracking cable. In order for the transmitter signal to transmit a sufficient distance, it is necessary to remove the grounding connection of the cable. When the joint or joint is grounded for safety or lightning protection, surge arrester (anti overload) can be used to replace the grounding of the joint or joint, so as to protect the cable and make uninterrupted positioning possible. 3. Is the connector spike. Most cable connectors or connectors will generate spike pulse when the receiver responds. Working experience and understanding the local situation will help the operator to judge whether the spike pulse indicates that there is a connector box. 4. It's a metal guardrail. The cable is usually buried directly under the road outside the road metal guardrail, and the signal is combined with the continuous metal guardrail. The metal guardrail is close to the antenna at the lower part of the receiver, which is difficult to track. When it comes to the receiver, this difficulty can be overcome by making the internal antenna at the lower end flat with the metal guardrail. 5. Street lighting. Generally, the metal column of street lamp and the metal shielding layer of lighting cable are connected with the metal column. At this time, the transmitter signal can be connected to the metal column of street lamp. If the cement lamp post - unless the lighting cable can be connected to the maintenance rack and grounded, the transmitter signal needs to be connected to the metal shielding of the lighting cable. Knowing the relevant location and depth of lighting cables (and other street facilities on the same lighting system) can help track lighting cables. A connection point may apply signals to a large area of cables. It is also feasible to use street lamp posts to apply signals to other power cables, but the signal may be weak because the signal may have been transmitted for a long distance before returning to the substation and can flow out of the system again. At this time, the transmitter can increase the output power mode and increase the output power. This method can locate cables that are difficult to apply signals or inconvenient. For cables coming down from wooden poles, cement poles or lighting columns, the transmitter can be placed in sensing mode to apply a signal by making a right angle to the ground on the pole.
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