Guide to Shop Distance Meter App in NOYAFA

Guide to Shop Distance Meter App in NOYAFA

2021-10-22
NOYAFA
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distance meter app does a great job in helping SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED renew our strong commitment to pursuing quality at international levels since launched with great strengths such as dimensional stability. The product allows you to lead a more simplistic and easier lifestyle and facilitates users' life with innovative concepts that deliver improvement and continuous updating. It is designed to save trouble and increase efficiency.NOYAFA accelerates business development in various markets. The products under the brand go through several adjustments; their performance is stable and helps reap great benefits for the customers. Customers feel more eager to repurchase the products and recommend them via the Internet. More website visitors are attracted by positive feedback, giving impetus to sales growth. The products help build a strong image.Service is an essential part of our endeavor at Best Cable Tester Supplier in China _ Noyafa. We facilitate a team of professional designer to work out customization plan for all products, including distance meter app.
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A Guide to Cleaning High Voltage Detector Tester - Do-it-yourself
A Guide to Cleaning High Voltage Detector Tester - Do-it-yourself
A non-contact voltage tester is a safe method to ensure that no current touches the wire. It is lightweight, makes no noise and has a hot wire covered with plastic insulation.If you hear continuous chirping or see a series of flashes, this confirms that the tester has detected voltage. A voltage tester is a simple device that checks whether electric current is flowing through a circuit.A voltage tester is helpful when performing electrical work such as wiring, installing lights or troubleshooting household appliances, as it can warn you of unsafe situations by detecting currents that you might find the hard way. You can also use voltage testers to check that wires have enough voltage to power certain electrical devices or machines. The simplest type is the neon-colored two-wire tester, which measures from zero to 500 volts.If the voltage exceeds 9.6 volts, this means that the battery has become sulphate and can no longer absorb any charge. High voltage detectors that detect AC and DC voltages have a longer service life and the tungsten carbide tip is protected by a plastic cap when not used.If you wish, you can take the test a little further and deactivate the ignition injection in order not to start the engine. This will allow you to crank up the engine, but we suggest that it lasts no longer than 1.5 seconds.When the battery is fully charged, the voltmeter should indicate that it maintains a voltage of 9.6 volts or higher. If your voltmeter shows a voltage between 12.4 and 12.8, this means that your battery is in good condition.A voltage of 12.9 volts is a good indicator that your battery has an excessive voltage. If you have a voltmeter with a voltage of 12.2 volts, you should consider dripping a charge into your battery. In this case, switching on a high beam deprives the surface charge of excessive voltage.The CAT voltage specified on the tester or accessory must match the electrical environment in which you are using it. Be sure to test the absence of voltage before performing any tests that are necessary for PSA. If the absence of the voltage test proves that the circuit is dead, it should be considered as activated.In older homes, do not assume that a wire box is a dead circuit breaker. Your digital multimeter should last long before it breaks or wears out. Testing a lead temperature sensor with a fuse, for example, does not work.The conductor of the circuit board wired into the device must be checked to ensure that the device is on. Place a tip of the probe at the end of the conductor, where the fuse must be checked. If one of the components of a circuit board is switched off, the device should switch off the current by separating one end of each component from its circuit.Some products have remote displays or wireless contactless tools that help you get out of danger by allowing measurements to be made without the activated part making contact. The live-to-dead or live test method requires you to test the functionality of your devices without knowing the voltage source before making measurements. Use this method to ensure that your instrument is working properly before you take any measurements.If you would like to repair cars or electronics and electrical appliances, a multimeter is a handy accessory for your DIY kit. If you do not have it, you can use a voltage detector (instead of a voltmeter) or a continuity tester (instead of an ohmmeter). When used correctly, the multimeter indicates whether the white or black wires in the reverse socket are grounded when the cable enters the box that feeds the socket.Working with the main power supply can be dangerous and you may suffer shock and electrocution if you do not take appropriate precautions. Read and understand your multimeter's manual and the warnings it contains before using it to measure main current and voltage.If you are experiencing faulty wiring or any type of damage, repairs or alterations should be performed by a qualified electrician after further testing or conversion work has been carried out.Once the conversion work is complete and the power supply is restored, perform a few basic tests to make sure the switches and sockets work. If you test a wall socket powered by a wall switch known as a switch socket (a common means for powering a floor lamp, for example), you can use a non-contact voltage detector to check the wall socket is in the position of the wall switch. Use a socket tester on the outlet to search for switches and a non-contact voltage tester to place any kind of electrical load on the circuit.You can add the creation of it to a beautiful piece of it: you can wear it by using a lock, uni-T voltage detector, pen detector, sound light, alarm LED flashlight, cute little pony cupcake packaging that makes children giggle, layer of chevron counting from the innermost layer to the perforation in the outermost layer, bachelor train, 125 specialty, beautiful silverwork, 5 citrus stones in addition to rainbow-pleasing shades.
Contingency Base Camp Workshop.
Contingency Base Camp Workshop.
In early May 2006, the United States Army Engineer School and the United States Military Academy (USMA) cohosted the 3d annual Contingency Base Camp Workshop in St. Louis, Missouri. The workshop was held during ENFORCE week to emphasize the importance of contingency base camps to the engineer mission. Participants were divided into one of three focus areas for the workshop: the Base Camp Knowledge Management System, Initiative 18, or Infrastructure Assessment. [ILLUSTRATION OMITTED] Base Camp Knowledge Management System The Base Camp Knowledge Management System, designed to be a Web-based knowledge portal for base camp planners and managers, was developed by the USMA using input from previous base camp workshops as a guide for management system requirements and capabilities. The system was developed to address the lack of a secure, fully integrated means of sharing information and transferring knowledge with other members of the base camp management community. The knowledge management system for base camps will provide an expeditious means for planners, designers, operators, and managers of base camps to share their knowledge. It will provide the process to develop and enforce methods for sharing operational information and conversion of data and information to actionable information, as well as eliminating or reducing information stovepipes among operational elements. Initiative 18 Initiative 18--from the Chief of Staff of the Army's task force on stability and reconstruction--establishes and provides base operation capabilities to support the operational Army in a contingency environment and city management expertise to support the host nation. The base camp workshop addressed the base operations support aspect of the initiative, specifically addressing the recommended course of action from the Initiative 18 Working Group that was sponsored by the United States Army Corps of Engineers[R] (USACE). The course of action discussed the establishment of a proponent for contingency base camps. The Army has 303,000 Soldiers deployed to 120 different countries to support the Global War on Terrorism. Department of Defense Directive 3000.05, Military Support for Stability, Security, Transition, and Reconstruction (SSTR) Operations, states that stability operations are a core U.S. military mission that the Department of Defense shall be prepared to conduct and support. Critical in the support of SSTR operations is that deployed contingency operations will require base camps. While doctrine developers often think in terms of deployed forces being at the "tip of the spear," the fact is that the tip of the spear needs to be correctly joined to the shaft. That joining point for Soldiers currently deployed is the base camp, where at the end of the day's fight, they link back into the logistics and support systems that prepare them for the next mission. Currently, the process to address base camp issues is done on an ad hoc basis, depending on the mission, operational area, and scale of operations. Combatant commanders divert their energy and resources to addressing base camp planning, design, and functionality--which are often outside the scope of their mission emphasis and in many cases should have been completed before establishment of the base camp. The present system is a sum of several parts controlled by different organizations, including-- * Research, Development, and Engineering Command (RDECOM) (United States Army Natick Soldier Center) * United States Army Combined Arms Support Command (CASCOM) (Quartermaster) * United States Army Materiel Command (AMC) (Logistics Civil Augmentation Program [LOGCAP]) * USACE (Forward Engineer Support Team [FEST], Environmental Support Team [EnVST], Contingency Real Estate Support Team [CREST]) * Engineer Command (ENCOM) (Facility Engineer Detachment [FED]/Facility Engineer Group [FEG]/Facility Engineer Team [FET]) Without an overarching proponent, coordinating resource challenges can result in insufficient preplanning, design shortcomings, operational issues, and the lack of an established research and development program to seek solutions proactively and quickly as operational gaps are identified. These factors can be compounded by extended operational requirements. Currently there isn't a base camp proponent. The Initiative 18 course of action recommends to the Chief of Staff of the Army that the Engineer School be the proponent for contingency base camps. This would include the formation of an integrated concept development team, with representatives from all organizations that provide support for the individual systems that make up base camps. Workshop participants agreed with the recommended course of action and provided additional recommendations for participation in an integrated capabilities development team (ICDT) to be developed by the proponent. Infrastructure Assessment The infrastructure assessment group discussed several topics. Workshop participants stated that units want a capability to go to a possible base camp site, obtain critical information, and pass this information back to planners. Two equipment kits were discussed in detail: the Handheld Apparatus for Mobile Mapping and Expedited Reporting (HAMMER[TM]) and the Engineering Field Planning, Reconnaissance, Surveying, and Sketching Set (ENFIRE). Both have the capabilities to provide the necessary support to assessment teams. HAMMER HAMMER is a ruggedized, handheld field computer for collecting geospatial data with high-resolution digital instrumentation. The device is a product of a cooperative research and development agreement between the Construction Engineering Research Laboratory and Surveylab, Ltd. The product seamlessly integrates and synchronizes a global positioning system, laser distance meter, digital camera, compass, inclinometer, geographic information system (GIS), and handheld computer. This allows users to quickly capture a rich array of geospatial and attribute data, annotated with images and text, such as capture and review a target position and photo, add attribute data to the feature, review and add photos, and view the new feature on a map. The instrument's database stores and shares data, and the automated GIS-based system facilitates data analysis, interpretation, and reporting. HAMMER will be demonstrated and field-tested this year. ENFIRE ENFIRE is a prototype system focused on enabling Soldiers to conduct reconnaissance on routes, bridges, and minefields by replacing the current surveying sketch kits with digital reconnaissance forms that match currently used hard-copy forms to facilitate data collection. ENFIRE supplies Soldiers with software and hardware tools to gather reconnaissance and reporting information, project management tools, a digital library of field and technical manuals, construction project building-design software, construction site terrain-modeling tools, an inventory management package, and tools to disseminate information to the Army Battle Command System battlefield functional areas. ENFIRE was demonstrated at Fort Leonard Wood, Missouri, in May 2006. Conclusion Overall, it was a very successful base camp workshop with much being accomplished in the breakout sessions. Several issues and actions were raised and will be addressed. Results and follow-up actions will be posted to the Base Camp Knowledge Management System Web site. The next base camp workshop will be held during the next ENFORCE. For information concerning the 2006 Annual Contingency Base Camp Workshop or future workshops, contact Mike Wolford at (573) 329-1927 or wolffordl@us.army.mil>. Mr. Wolford is an environmental training specialist for the Directorate of Environmental Integration at the United States Army Engineer School, Fort Leonard Wood, Missouri. He recently retired from the Army after more than 24 years of service. He holds a bachelor's in environmental science from Drury University, Springfield, Missouri, and is currently working on a master's in environmental management from Webster University, St. Louis, Missouri. By Mr. Michael Wolford
Basement  Businesses
Basement Businesses
So, you want to be your own boss. And you figure a business in your basement is a good way to set up something to be a boss of. Trouble is, you'll probably end up with more bosses than you ever had - every customer who gets you on the phone.Don't worry. Your own business has other benefits, and you'll get to remember a whole lot of them every April, when you find out how much of your money you're keeping out of the tax collector's hands.Your small business doesn't have to be in the basement, of course, but that location often gives people the biggest tax writeoff, says chartered accountant Sheldon Buchalter. If your home is a bungalow with a big full basement, you may well be able to claim half of many of the costs of your house. Buchalter shudders at the number of self-employed people who don't know they can claim the cost of a home office, or forget about it from one April to the next."I see it all the time," he says. "I had one guy who had been missing a tax deduction of five grand a year for the last four years. That's close to 10 grand he shouldn't have paid the government."Buchalter himself has an office in his home as well as his cheerfully cluttered, fountain-bedecked place of business at Tepperman Buchalter LLP. He doesn't try to claim the expenses at home, though."You know what they say. Pigs get fat. Hogs get slaughtered," he says. "I'm not using the office at home every day. I use it maybe 10, 15 times a year. It has to be regular, continuous use to be claimed. It's intended for when you have no other office or place to do business."What Buchalter does do, though, is claim for the mountains of clients' files he stores in his basement."If I rented a storage space, it would probably cost $300 a month. Instead, our company pays me $75 a month."The situation can be much more clear cut if your home office is the only place you have to do business. You may not, in that case, even have to set aside a room in the house that's used for nothing but business, although you're much safer with the tax collector if you do. Either way, you need to figure out how much of the expenses for your entire home could reasonably apply to the business.The Canada Revenue Agency prefers that you get a tape measure out of your tool drawer, but Buchalter will have none of that.He usually tells his clients to figure things out on the basis of one floor, say, in a three-floor house, or one room out of however many you have, not counting bathrooms or closets, no matter how big they are. So what's eligible? "You can claim your cleaning lady," Buchalter chortles, "or at least a part of her."Other claimable expenses are more obvious. They include mortgage interest (but not the part of the payments that goes toward the principal owing), property taxes, heat, hydro, water and home insurance. "Don't forget cutting the grass and shovelling the snow," Buchalter says. "You have to make the place attractive for the clients." Repairs and renovations come into the picture, too, but they're a tougher call in terms of what to claim, and tax advisers and collectors may have differing opinions on what's legitimate and what's not."I tell my clients not to claim any portion of general house repairs," Buchalter says. He points to a new roof as an example. Sure, your office won't be much good to you if the rain is as bad inside as out, but then the house won't be habitable either, and won't be worth anything when you go to sell it.Similarly, don't claim the cost of a major renovation - tearing down and putting up walls, and the like - to create your home office.Besides, that kind of work could easily cost $20,000 or more, and that's not the kind of money you can claim as an expense in any one year. Meanwhile, the courts have been pushing the tax collector into a kinder corner in recent years when it comes to expense claims for home offices."You can have a bit of personal use in a home office these days, and CRA still says okay," Buchalter says. "That's a big change in recent years."Buchalter doesn't like to go too far with the tax rules."I tell people they can't use their living rooms or dining rooms as a home office," he says. "But a bedroom or a den is okay."Getting back to the computer in your home office, if you bought the machine since March 2007, you can write off 55 per cent of the cost in the first year, with the rest to follow in later years. That's up from only 30 per cent to start - and may get a little closer to the speed with which computers collapse into the category of obsolete and worthless.All the deductions you do take, though, can add up, so it's not surprising that the tax collector has thrown a wrench into the works. You have to make enough of a profit on your business to cover the home-office expenses, or you don't get to claim them in the current year.The tax collector is giving you more latitude with your other expenses, producing a loss in your business even when you have a "day job" and are using the business loss to reduce the tax you owe on your regular employment income.Whether you're in a home office or an outside office, however, the Canada Revenue Agency may take exception to the kind of business you run and whether you're allowed to claim expenses against your revenue at all."It's the hobby issue," Buchalter says. If you start a mortgage lending business, even the tax collector isn't likely to accuse you of having so much fun that you shouldn't be allowed to deduct expenses. But if you love collecting stamps, and then decide to go into the business of buying and selling them, and you lose money ..."
A Wire Tester for Discovering Network Security Issues
A Wire Tester for Discovering Network Security Issues
Wire Tester and Site Auditor is an app for security testing which can be used by anyone, not just techies. It offers a list of commonly used tools to test websites or applications for vulnerabilities.A software developer needs to test web applications and mobile apps. Wire tester is a valuable tool for developers to test the application. They need to know about the security of the system in advance so that they can take appropriate measures.## "Wire Tester" (WIT) is the name given to the automated testing tool.It can perform a variety of tasks including:a) Web application security testing;b) WordPress/PHP security; and,c) Flex application testing. It also has the "Suspend/Resume" feature which allows you to save a session and resume it at will. It performs automation on web applications as well as other types of Internet applications. These include web servers, FTP servers, mail servers, etc., to name a few. Side by side with this tool are "Site Auditor" (SA), which is an automated web site audit solution that helps you analyse websites for potential vulnerabilities soThis section is all about the best wire testers, site auditors and security testing apps. The best of them feature powerful features and help you to test the security of your website on any device as well as from anywhere.This section is about the top software tools that can be used to check any website properly and efficiently. They also help you to test your own sites without any third-party interference.The article outlines the challenges and opportunities of using a security testing tool such as WireTiger.The team at WireTiger has been making hundreds of different applications to test web applications since 2001. This is a very common task for security testers and they find it necessary to test many different types of applications. The article explores the benefits and challenges that are involved in doing this task.We can't just run a web application terminal emulator on our PCs but we need something that will simulate what it would look like as it runs on the vulnerable device or platform. This is why we need to use a security testing tool such as WireTiger which emulates browsers, servers, operating systems, etc.. Test automation tools help people automate their software testing process, which can be particularly useful for those who wouldWireTesters are testers who test software and websites to verify their functionality. They usually use automated tools to write code, run tests, or even just perform a quick check on the code as quickly as possible."Wire Tester" is a software developed by the American company WireTiger.It allows users to test and analyze cable conductors, cables as well as other electronic components. A user can scrutinize data collected using this software by running tests over a wide range of frequencies and distances. It is capable of detecting any electrical faults on the wires as well as electric arcing due to incorrect connections.As the name suggests, it consists of three parts:In this section, we will be discussing the top 10 Wire Tester tools that are frequently used by our clients to test and validate content.Our Team is offering you a Complete Solution to all your Programming needs.This is The Best& the Most Comprehensive App – Your Mobile Friendly Solution to all your Programming Needs, no other solution has got this feature.Can be used for any type of programs, including iPhone Apps and Android Apps. Can also be customized as per the user's need. This is an ALL IN ONE APP that can do everything one can imagine from a simple programmer to a complete developer within a single app. It's an All-In-One App that can do everything from Web Developers, Mobile Developers and even Security Analysts! It will take you from starting out with none of these skills to a full-scale programming expert in just 5 days! You get ALL OF THE FOLLOWING FOR FREE: - Pre"Wire Tester" is the best way to test your websites in any conditions. It can be used for security screening and penetration tests.When it comes to content generation, there are many tools available. Some are very useful and some are not so useful. To help you narrow down the options, I have rounded up 10 all-in-one tools:
Functional Characteristics of Live Cable Identification Instrument
Functional Characteristics of Live Cable Identification Instrument
Live cable identification instrument is of great significance in cable construction and maintenance. The charged cable identification instrument uses single chip microcomputer technology to encode the transmitted signal at the transmitting end, drives the large-diameter caliper to transmit the large current phase coded signal with an average value of 0. The single chip microcomputer in the receiver decodes and identifies the received phase coded signal. According to the uniqueness of the signal phase characteristics on the target cable, the target cable is identified from a large bundle of other cables. The live cable identification instrument can also directly connect the output signal to the cable in power failure operation. At this time, the grounding circuit can be identified to be more than 1000 ohms. It is a light, compact and portable instrument. It is suitable for various types of high and low voltage power cables. The instrument is composed of current pulse transmitter, receiver, transceiver caliper and several connecting wires. It has high-power current pulse output; The on-site received signal has clear characteristics, easy to carry, light and flexible, high sensitivity, can effectively suppress the on-site power frequency interference, and judge accurately and quickly; The protection circuit is reliable and not afraid of output short circuit; Large jaw Ñ„ 150 power cables suitable for various cross-sectional areas; There is a high-power isolation transformer inside, and there is no direct electrical contact between the operator and the mains. However, it is not allowed to touch the black and red clamp wires with hands when the instrument is charged. 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 cable fault tester, street lamp cable fault tester, underground pipeline detector, 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!
Composition of Cable Fault Tester
Composition of Cable Fault Tester
Composition of cable fault tester: the cable fault tester can test the high resistance flashover fault, high and low resistance grounding, short circuit, cable disconnection, poor contact and other faults of the cable. If equipped with an acoustic point tester, it can accurately determine the position of the fault point. It is especially suitable for testing power cables and communication cables of various models and different levels of voltage. System composition 1. Host of cable fault tester 2. Cable path and fault locator 3. Cable fault integrated high voltage generator 4. Cable identifier 5. High voltage cable safety pricker 6. High voltage equipment: current sampler, cable fault integrated high voltage generator, pulse capacitor, complete set of special test lines, etc. Cable fault tester is a set of comprehensive equipment. It is used to test the open circuit, short circuit, grounding, low resistance, high resistance flashover and high resistance leakage faults of power cables, as well as the 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. The instrument adopts a variety of detection methods, computer technology and microelectronic technology. It has the characteristics of high intelligence, complete functions, wide range of use, accurate test and convenient use.
Operating Steps of Live Cable Identifier
Operating Steps of Live Cable Identifier
1. Connect the transmitting source: the live cable identifier inserts 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 clamps the transmitting caliper a on the identified cable. The arrow on the transmitting caliper a points to the cable terminal. Both ends of the identified cable shall be reliably grounded. For cables that do not operate, the core wires at both ends can also be grounded. 2. Turn on the power switches of the transmitting source and receiver to check the direction: 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 this time, the pointer of the receiver ammeter must deflect to the right, and there is an audible and visual prompt at the same time. If the arrow of the receiving caliper B points to the transmitting source end, there will be no audible and visual prompt, and the pointer of the current meter will deflect to the left. Remember the deflection direction of the receiving caliper gauge. 3. Identification: at the identification point, use the receiving caliper B to identify each cable. 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 be deflected to the right, and the audible and visual alarm prompt shall be given at the same time. On other cables, the pointer of the receiver current meter must deflect to the left without audible and visual alarm. The pointer of the current meter of the receiver deflects to the right, and the audible and visual alarm prompt is the cable to be searched and identified. This test result is unique. That is, no matter how many cables there are in the cable trench, when each cable is identified with the receiving caliper B, only the receiver current meter pointer on one cable (the cable to be found and identified) deflects to the right and gives an audible and visual alarm. 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 underground cable fault tester, cable fault tester, 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!
Possible Causes of Cable Failure
Possible Causes of Cable Failure
With the vigorous promotion of China's power industry, more and more local, underground, overhead and other cables! At the same time, due to long-term erosion, the cable also needs regular maintenance! Today, I will give you a simple analysis of possible cable faults and corresponding maintenance methods. You can have a good understanding. In general, our common cable faults include short circuit to ground, phase to phase short circuit, etc. this fault mainly occurs on buried cables. The main symptoms are normal in sunny days and short circuit in rainy days. So what should I do about this fault? The solution is to recommend the use of cable fault tester produced by formal enterprises. The low-voltage pulse method is adopted. The host plus cable two phases. The host transmits a pulse, and then through the feedback waveform, the fault point can be found accurately and repaired or replaced! 1、 In case of failure, the first-aid repair personnel shall prepare the following materials and tools: 1. One set of cable fault tester and one set of cable identification instrument. 2. The faulty cable shall be the same as the cable, cable head and crimping pipe of the same specification. 3. Two small ropes, two large ropes and four sets of climbing tools. 4. Check two groups of electric pens, safety signs and grounding sealing wires. 5. Lighting tools, communication tools, wire cutting scissors, wire binding, iron wire, saw bow, phase sequence belt and blowtorch. 6. Power generation equipment. 7. Multimeter, insulated megger, anti-aging wire, wire nose, crimping pliers, adhesive tape, sandpaper and round file. 2、 The emergency repair division and process can be carried out in groups at the same time. 1. Cut off the fault point at the first time according to the dispatching command. 2. Inform Baodong maintenance workshop according to the fault conditions. 3. Prepare materials and tools and ship spare transformers. 4. Attention shall be paid to site safety and phase sequence of cable terminal connection during recovery. 3、 Note 1. The copper shielding layer is wound with insulating tape, which is used to prevent the copper shielding layer from being loose and temporarily fixed during the fabrication of cable terminal head. It shall be removed when heat shrinkable stress tube. 2. The electric stress control tube (stress tube for short) is sleeved at the fracture of the shielding layer to disperse the electric field stress (power line) at the fracture and ensure the reliable operation of the cable. 3. Safety protection shall be provided during voltage withstand test. 4. When using lighting lamps near the railway line, pay attention to the direction and angle to avoid disturbing the driving. The requirements shall not be reduced even under poor site working conditions; The division of labor shall be clear, and the preventive measures shall be arranged in detail. A closed fence or fence shall be installed at the test site; And marked stop, high voltage danger! Words and signs; It shall be hung outwards and protective measures shall be sent, especially when the other end of the cable needs to be protected and the communication must be kept open to prevent an emergency. The test equipment and wiring shall meet the requirements and the operation shall be standardized; During the test, attention shall be paid, and the operator shall stand on the insulating pad; At the end of line change or test, disconnect the test power supply, discharge it, and ground the high-voltage part of high-voltage equipment; In the high voltage test, the cable shall be discharged to the ground several times before touching the cable, and shall be short circuited to the ground at the end of each test or at the end of the test.
How to Use Live Cable Identification Instrument to Identify Power Failure and Live Cable
How to Use Live Cable Identification Instrument to Identify Power Failure and Live Cable
Before we use the instrument.. Let's first understand the functions of the instrument panel buttons and what they are used for? Live cable identifier transmitter 1) signal output port: this port sends the signal to the cable to be tested through direct connection coupling. The instrument can automatically detect the connection mode (direct connection or coupling). When no output line is connected to this port, the screen mode menu displays "idle", and no signal is output at this time; 2) Frequency switching: the instrument has four output frequencies: low frequency, intermediate frequency, high frequency and radio frequency. It is suitable for different test systems and has strong anti-interference ability. When this button is pressed, the frequency will be switched between the above frequencies in turn; 3) Power regulation: the instrument adopts constant power output mode, and low, medium and high gears are optional. When this button is pressed, the power will be switched between the above gears. 4) Backlight switch: turn on the backlight for test after the instrument is turned on. When this button is pressed, the backlight will turn on. When it is pressed again, the backlight will turn off. 5) Power switch: the main switch of the whole instrument. When this button is pressed, the instrument enters the test interface; 6) Liquid crystal display: the instrument uses liquid crystal display for man-machine dialogue. 7) charging interface: it is used to charge the signal transmitter and the receiver of live cable identification instrument. 1) power switch: it is responsible for turning on and off the power supply. Press the state to turn on, and then press the key to turn it off; 2) Frequency switching: the instrument has four output frequencies: low frequency, intermediate frequency, high frequency and radio frequency. It is suitable for different test systems and has strong anti-interference ability. When this button is pressed, the frequency will be switched between the above frequencies in turn; 3) Backlight switch: turn on the backlight for test after the instrument is turned on. When this button is pressed, the backlight will turn on. When it is pressed again, the backlight will turn off. 4) Volume adjustment: adjust the sound volume of the speaker according to the demand, and adjust the volume in the order of small - medium - Large - off; 5) Gain adjustment: adjust the system gain according to the demand, the dynamic range is 000-100db, and the default is 60dB after startup; 6) Charging interface: it is used for charging the signal receiver. I believe you have a preliminary understanding of the instrument. Let's explain in detail how to use the live cable identification instrument: 1. Identification of power-off cable 1.1 direct connection conditions â—Ž it must be power-off cable; â—Ž know at least one end of the cable and separate the known end from the system, including disengaging the zero line and ground line; 1.2 signal application â—Ž in this method, the direct connection method is used to apply the signal (as shown in Figure 4); Turn off the power switch of the transmitter, insert the output connecting line into the output line interface of the transmitter, as shown in Figure 4, and connect the wire core with the red clip. Turn on the transmitter power switch and select the frequency: the transmitter has four or two frequencies: low frequency, intermediate frequency, high frequency and RF; After selecting the frequency, select the gear according to the actual situation. The transmitter is divided into high gear, medium gear and low gear. Generally, try to select a relatively low gear to save the power of the battery. After selecting the gear, the instrument automatically performs impedance matching. After matching, the transmitter displays the stable fault impedance of the current system, and the icon starts to rotate. 1.3 signal detection (identification) â—Ž connect the receiving coupling clamp to the receiver with a connecting wire with four core plugs at both ends; â—Ž turn on the power switch of the receiver to make its frequency correspond to the transmitter; â—Ž clamp the red line or cable head of the transmitter straight line with the receiving coupling clamp to reduce the gain so that the signal strength is about 800. Remember the current gain and strength value, and take this value as the reference value; â—Ž at the point to be tested, clamp the exposed cable with coupling pliers and find the cable with strong signal, that is, the cable to be found. 2. Identification of live cable 2.1 coupling conditions the cable must have known exposure points, and both ends of the cable must have grounding points or points associated with the ground (the live cable has been associated with the ground through the zero line); The coupling position shall be as far away from the end as possible; 2.2 one end of the four core aviation line equipped with the coupling signal application instrument is connected with the four core aviation base on the transmitting coupling clamp, and the other end is connected with the transmitter to complete the connection between the transmitting clamp and the transmitter; Put the transmitting coupling clamp on the cable exposure point, which is the signal application point. Note that the coupler should be completely closed; Turn on the power switch, select the frequency and match the impedance of the instrument; 2.3 signal detection (identification) â—Ž connect the receiver and receiver coupling clamp with four core aviation line; â—Ž at the transmitting point, clamp the receiving coupling clamp on the cable to reduce the gain so that the signal strength is about 800. Remember the current gain and strength value, and take this value as the reference value; â—Ž at the point to be measured, clamp the receiving coupling clamp on the exposed cable and find the cable with strong signal, that is, the cable to be found. If the cable is long, the signal will have a certain attenuation. At this time, compare the cable with strong signal.
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