Shop Best Purchase Cable Tester in NOYAFA

Shop Best Purchase Cable Tester in NOYAFA

2021-11-05
NOYAFA
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Purchase cable tester from SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED is one of the most competitive products in the industry. It is made of the finest raw materials that not only meet with the rigorous quality and safety standards but also meet the application needs. It delivers great benefits to customers with longer service life, stable performance, strong usability, and wide application. While going global, we not only remain consistent in the promotion of NOYAFA but also adapt to the environment. We consider cultural norms and customer needs in foreign countries when branching out internationally and make efforts to offer products that meet local tastes. We constantly improve cost margins and supply-chain reliability without compromising quality to meet the needs of global customers.We have established a strong and dependable logistics network with which we are able to deliver products, such as Purchase cable tester to all over the world timely and safely. At Best Cable Tester Supplier in China _ Noyafa, customers can also get comprehensive customization service from design, production to packaging.
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What Should Be Considered When Purchasing a Cable Fault Tester
What Should Be Considered When Purchasing a Cable Fault Tester
Cable fault tester is a common cable fault detection equipment, and its accuracy and detection speed are guaranteed. We are used to evaluating this thing before we buy it, from its performance, value, price and other aspects. After that, we will decide whether to buy it. So, what evaluation should be done when purchasing a cable fault tester? When selecting the cable fault tester, the cable fault tester needs to understand its performance. Is its overall performance stable, or is it convenient in the whole operation? If there are problems in the operation and unstable performance of the cable fault tester you choose, it will certainly lead to more problems in the whole use, not to mention that the cable fault tester you choose is a test suitable for your own use, which can not highlight its whole use value. Therefore, when selecting the cable fault tester, we should pay attention to these two points: 1. How about the performance? Before choosing a cable fault tester, you'd better understand and test several different cable fault testers, that is, find some early tests to see if they really have high usability. 2. Quickly detect the fault point and find the problem of your own equipment in a very short time, If you can, it can show that it is a very good cable fault test. If you can't meet this standard, you will waste more time and money, and the selected cable fault tester will not be suitable for your own use. Therefore, we can understand how to select a more appropriate cable fault tester. After selecting an efficient and suitable cable fault tester, the next step is how to use it. What if you can better operate the cable fault tester to enable you to quickly detect the fault point? 1. Understand the instructions of the cable fault tester. After you get a cable fault tester, you need to understand its operating instructions before preparing for operation. Some people feel that they have a certain understanding of the cable, so it is not necessary to understand its operating instructions when using it. In fact, this is not the case, Most of the time, my knowledge is very different from professional operation, so I can understand the contents of the operation manual in advance before use, which naturally has a very good guarantee for the whole operation after use. 2. Check the circuit. When using the cable fault tester, do you need to test in advance or find out if there is a problem with its circuit connection? If there is a problem that needs troubleshooting, you also need to know whether the whole connection is normal in advance, so as to have higher detection efficiency in the whole detection, know the problem of cable fault, and find a good solution, so as to ensure the working performance of the whole power system. Generally speaking, after the carefully selected cable fault tester, the equipment performance of the cable fault tester is guaranteed. In the process of cable fault detection, the corresponding fault results can be obtained according to the fault performance in the operation manual.
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.
Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
Follow the Cable Fault Tester Supplier to Deeply Understand the Cable
The lead of the motor is not only related to the rated voltage of the motor and the open circuit voltage of the rotor of the wound rotor motor, but also directly related to the current carried by the motor winding and the actual service condition of the motor. The selection of lead specifications should first be determined according to the withstand voltage value. The cable has a withstand voltage range. This rule must be followed when selecting. Below, the supplier of cable fault tester will take you to have an in-depth understanding of cables. Select the lead of corresponding voltage level according to the voltage requirements of the motor. The voltage level of the lead shall not be lower than the rated voltage of the motor winding. For example, for 10kV and 380V motors of high-voltage motors, the voltage value of the cable is very different. In addition, besides the voltage and current requirements, the insulation grade of the cable of the motor lead is also very important. According to the insulation grades of class B and h, the insulation heat resistance of the motor is different, and the material of the insulation material is also different. It must be noted that if the class B lead is used in the class H insulated motor, the possibility of lead damage and ground fault is very high. The cable fault tester supplier interprets the provisions of motor lead in the national standard: 1. Determine its necessity according to needs. According to the standard, if the motor has a power cord, or in order to facilitate connection with other equipment, provide a guide cord extending out of the motor base and a plug connecting the power supply line if necessary, the cord and plug shall comply with the provisions of the relevant standards of the product or the relevant standards of such equipment. Especially for small motors, winding wires can be used to connect with equipment or terminal blocks, but for motors that must undergo relevant insulation treatment, soft wiring must be adopted, and the provisions of terminal blocks must be added. Unless grounding is not required, these flexible wire bundles must have grounding conductors. Leads (including ends) require different colors and markings. Most motor manufacturers use three-color leads for three-phase motors, and some motor manufacturers use labels to distinguish them. However, for grounding wires, they are adopted according to standards. 2. Voltage and current requirements. The standard stipulates that the rated voltage of the guide flexible cable must be under the maximum working voltage of the motor, and its load flow must be at least equal to the load current of the service factor or 125% of the full load rated current, whichever is the larger. The flexible cord insulation shall withstand the working frequency withstand voltage test of the circuit. 3. Protection requirements for leads. In addition, there are measures to eliminate the possible tension, or guide the flexible cable (power cord) not to expose the motor. An insulating protective layer and clamping device are set at the outgoing part of the flexible cable to prevent the external tension from being transmitted to the internal wiring and prevent accidents caused by the rotation and displacement of the flexible cable. 4. Limitations and insulation requirements. In addition to other protective measures, the introduction of flexible cables into the motor shall be prevented. The clamping device for clamping and fixing flexible cables is made of insulating material, made of metal material and requires insulating lining.
Design of High Voltage Cable Fault Locator
Design of High Voltage Cable Fault Locator
High voltage cable fault locator adopts a variety of detection methods and applies contemporary advanced electronic technology achievements. Using computer technology and microelectronics technology, it has the characteristics of high intelligence, complete functions, wide range of use, accurate test, convenient use and so on. It is very important in civil aviation maintenance to detect aircraft cable fault; According to the characteristics of aircraft cable, a method that can effectively test and diagnose it, low voltage pulse method, is proposed, and an aircraft cable defect detection and positioning device is designed by using single chip microcomputer and CPLD technology; The positioning instrument is mainly composed of three parts: signal acquisition circuit, system control circuit and human-computer interaction circuit; At the same time, two sets of product vibration are adopted, which not only ensures the high-speed signal acquisition, but also meets the low-speed processing of the system. It has the characteristics of low cost, portability and dexterity, accurate test and so on; At the same time, in addition to being applied to aircraft cable maintenance, it can also be further applied to short-distance cable testing and defect detection in telecommunications, electric power and other departments. Dear customers: Hello, our company is a high-quality development group with strong technical force, providing users with high-quality products, complete solutions and excellent technical services. The main products are cable 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!
How Can Modular Screwdriver Organizers Make Your Job Easier?
How Can Modular Screwdriver Organizers Make Your Job Easier?
Technicians love to spend their time in their workshops for obvious reasons. And if you are one of those technicians, you know the importance of screwdrivers for you. Without good quality screwdrivers, you cannot complete a task at hand. But is it enough to have screwdrivers in your toolbox? What about keeping them safe, secure, and handy at all times? And thats why you need screwdriver organizers in your toolbox?Where do you usually keep your Screwdrivers?Is it so that you have kept all your screwdrivers in the same place but they are not organized! This might result in you wasting your precious time while searching for the right sized screwdriver when you need it during a job. And what can be even worse is losing them along the way.What makes Good Screwdriver Organizers?When you have to work on a job, you cannot come unprepared. The modular screwdriver organizers offer you special storage solutions where you can store a number of screwdrivers in place at once. That also means that you wont ever have to worry about losing or misplacing your screwdrivers.With a high-quality screwdriver by your side, you will be able to quickly find the exact screwdriver that you have been looking for without having to waste any of your time. Regardless of the size, the screwdriver organizers will be able to hold your screwdrivers in place without causing any hassle to you.Why do you need a Screwdriver Organizer?The best thing about having screwdriver organizers is that you can keep all of your screwdrivers in place along with some smaller tools. You will be able to easily find them and put them back after use. For every screwdriver, there is a dedicated place in the organizers that holds them tightly. Most modular screwdriver organizers provide you enough space to keep your short, stubby, long and offset screwdriver.Along with these, you can also keep your extensions, pliers, spanners, ratchets, and other small tools. Buying a screwdriver organizer will prove to be a great investment if you seriously want to take care of your tools and save your time.What are the Common Features of Screwdriver Organizers?Different companies use different ways of manufacturing screwdriver organizers. But there are a few things that are screwdrivers share in common. They come with strong magnets to hold the tools tightly in place. There is also foam protection in the organizers so that there are no scratches on the tools. Every dedicated screwdriver organizer can hold several screwdrivers without any hassle. Final TakeawayIf you are tired of wasting your time to find the right screwdriver or losing them forever, you must look for a suitable screwdriver for your needs. And before you keep your tools in the toolbox organizers, you must apply a light oil to them. And if you will be keeping the tools for a longer time, you can apply a rust preventive compound on the metal parts of your tools. All you have to do now is search for the best screwdriver organizer for you and see how it improves your work efficiency
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!
What Should We Pay Attention to When Using Live Cable Identifier
What Should We Pay Attention to When Using Live Cable Identifier
The emergence of electricity has broken people's original lighting mode and provided us with a convenient and comfortable living environment. Cable has the function of transmitting electric energy and plays a very important role in life. The demand for electricity is so great that sometimes the cable will inevitably have problems. Live cable identification instrument is one of the commonly used fault detection equipment. 1. The operator shall read the operation manual in advance, master the function, working method and work preparation of the instrument, and carry out correct test requirements. 2. Before the test, disconnect both ends of the tested wire with armored grounding, and ground the far end (one end) of the core wire. 3. The two output wires of the cable identifier shall be clamped in red on the core wire of the tested wire and grounded in black. 4. Before turning on the transmitter, the output adjustment knob must be turned counterclockwise to zero before starting. Slowly adjust the output adjustment knob to make the output reach 5a-15a (usually adjust the adjustment knob in the range of two-thirds). If the grounding resistance of the distribution station system is greater than 4 ohms, the output current is less than 8a, and the receiver instrument head can work normally, as long as it can deflect in the positive and negative directions. 5. Note: during field use, if the grounding resistance is too small and the output adjustment knob of the transmitter is zero in one clock cycle, the output current will be very large, and there is a protective circuit action in the transmitter (indicating a small swing of the plug). In Article 2, in the actual test, there are more than two connections between the two transformer chambers between the same cable conduit and other cables, The grounding resistance is connected because there are other armored cables in operation, and the change is very small, even close to zero. If the output current of the transmitter is too large and there is a protection circuit, the resistance can be tested in series in the transmitter loop test. After the test, the temperature of the test resistance is very high. Note that other 1-2 ohm resistors greater than 20W can also be used instead of the test resistance. 6. Before identifying the cable on site, please calibrate the receiver of the live cable identification instrument at the beginning of the wire according to the instrument calibration requirements in the instruction manual. 7. Standard for cable field identification: when the sensor is pasted on one of the cables for test, the header of the receiver will lean to one side and swing more. When testing on other cables (keeping the clamping direction of the sensor the same), the receiver instrument head will lean to the other side and swing less. The cable with the receiver instrument head leaning to one side and swinging sharply is the cable to be identified.
Brief Introduction of Intelligent Handheld Cable Tester
Brief Introduction of Intelligent Handheld Cable Tester
Intelligent handheld cable tester Handheld cable tester generally adopts pulse reflection method. Judge the fault point according to the returned waveform. The waveform returned during each test will be different due to some external reasons. Therefore, the requirements for the working experience of users are relatively high. In view of this situation, TFN launched an intelligent handheld cable fault tester. The intelligent handheld cable fault tester is equipped with AGC (digital gain automatic control) system; Digital waveform automatic recognition technology; ARM CPU with FPGA technology. The machine automatically recognizes the waveform and judges the fault point. There is also waveform comparison function, which can make you learn waveform recognition faster. Instrument introduction: D131 series cable fault obstruction intelligent rangefinder is suitable for automatically measuring the precise position of core wire obstacles such as broken wire, mixed wire and ground gas of power cable and communication cable. The d131 series is characterized in that it can automatically test many typical faults. The specific features are as follows: 1) DAGC (digital gain automatic control) system: digitally adjustable gain. Eliminate the waveform distortion of the original instrument of the same type due to the potentiometer knob. It can also be used for pure linear adjustment, which is conducive to manual testing. 2) Digital waveform automatic recognition technology: rely on the machine to automatically recognize the waveform that is difficult to judge manually. 3) Using ARM CPU and FPGA technology, it can quickly carry out various complex operations and accurately judge the fault waveform. 4) Waveform comparison function is convenient to compare the test waveforms of fault line and normal line, and clearly locate the fault point. 5) Large screen color LCD display, humanized interface menu design, fast digital buttons, convenient for users to operate. 6) High energy lithium battery can be used for up to ten hours (charging with a special charger). 7) Wave speed memory, power on after power off, and the wave speed is automatically set to the wave speed at the last power off. fqj
How to Ensure the Correctness of Cable Identification by Live Cable Identification Instrument
How to Ensure the Correctness of Cable Identification by Live Cable Identification Instrument
In the 21st century, with the rapid development of railway, the speed per hour is faster and faster, and the marshalling operation is more and more intensive, it is necessary to ensure the normal operation of electrical service system. How to ensure the correctness of cable identification by live cable identification instrument, we will discuss and explain this problem below. In the electrical service support, the fault and construction of signal cable shall be tested and identified quickly. If the identification is wrong, it will have a very serious impact and cause train accidents. So let's talk about the identification of electrical service system. 1、 Current situation and disadvantages of signal cable identification in telecommunication system target cable identification is required in field work such as emergency repair, relocation and replacement of signal cable. Since there is no suitable instrument, most of our signal cable maintainers use the following methods to identify. First, wait for the skylight point, and remove the signal cable sheath when the skylight point; Secondly, two core wires are selected as the identification wire, and the two core wires are also found at the end; Finally, use the blade to cut the skin of the selected two core wires for short connection, and use the external meter to measure whether the selected two core wires are short circuited at the end. If they are short circuited, it means that the identification is accurate, otherwise, the identification is wrong. However, there are many disadvantages in using this method for identification: 1. Generally, such work is rush repair, which must be completed in the skylight point. If it takes up the time in the skylight point for identification, the rush repair time will be greatly reduced, and some even need to apply for two skylight points to complete a work; 2. After the selected two core wires are short circuited, the two core wires found at the end may not correspond, resulting in wrong results; 3. The outer skin and copper shield of the cable shall be broken. After identification, this place shall be restored. In the future, this place is a joint and a potential fault point. 4. The most important thing is that this identification often produces wrong results, resulting in operation accidents. 2、 Current status of cable recognizer 1. Current status of identification equipment (identification and attached identification): status of identification 1: conventional cable recognizer is designed for power cable identification and is widely used in the power field. Whether imported or domestic, it has two service conditions: 1) it has high requirements for the loop resistance of the target cable, Generally, it shall not exceed 50 ohms. If it exceeds the range of this circuit resistance, the equipment will not work normally, which is beyond the range of equipment use; 2) Disconnect at least one end of the outer armor grounding (same as shielding grounding) at both ends of the target cable, so that the applied signal cannot return from the target cable. Therefore, this power cable identification instrument is not suitable for the identification of electrical signal cables. Identification status II. When promoting digital path tester, some manufacturers publicize that the equipment has identification function. In fact, when using the digital path tester to identify, if the receiver touches the identified cable, which signal is the strongest, that is the identified cable. This recognition method has a single judgment basis in recognition, only the signal size, no signal direction, and can not be used as the final judgment. Moreover, such equipment has great attenuation on the signal cable, and the identification of long-distance signal cable can not be done at all. 2. Conclusion: the use conditions of power cable identification instrument and digital path tester determine that these two types of equipment are not applicable to the signal cable of electrical service system. 1) For the signal cable of electric service. The cable is very long, with a length of more than 5km, and some can reach more than 20km; The wire core is very thin, generally 1mm ² , The resistance is 23.5 Ω per kilometer, and the cable body resistance of more than two kilometers has reached the critical value of equipment test, so the loop resistance problem has become a hard wound of the conventional identification instrument. 2) In the electrical service system, it is very inconvenient to open the outer armor grounding (the same as shielding grounding) of the signal cable. The regulations of each Railway Bureau and railway line are inconsistent. Some cannot be opened, some must be opened in the skylight point, and must be restored before the end of the skylight point. Based on the above two points, the conventional cable identifier and Pathfinder can not meet the requirements of signal cable identification of railway electrical service system. 3、 During the test of railway signaling cable identifier, the requirements for loop resistance can reach 1000 Ω, and there is no requirement for armored grounding or ungrounded of the target cable. The utility model solves the difficult problem of identifying the signaling cable. The railway communication cable is specially designed and can be used online. It has the characteristics of micro power transmitting signal, has no crosstalk and interference to the data transmission of adjacent cables, and accurately finds out the required cable. The size double jaw configuration can not only identify the cable, but also identify the wire pair in the cable. Color large screen LCD, live voice prompt, friendly intelligent man-machine interface, and its unique intelligent orientation can indicate the signal direction, which makes the operation simple and practical. It is especially suitable for field use. Even untrained personnel can use it quickly. Through live measurement, it is not necessary to apply for night skylight time to cut off and repair cables. Workers in the front-line electrical service workshop can measure during the day, including when high-speed rail / Bullet train passes, which improves the timeliness and operability of detection.
What Are the Components of the Underground Pipeline Detector
What Are the Components of the Underground Pipeline Detector
The underground pipeline detector can quickly and accurately detect the location, direction and depth of underground water pipelines, metal pipelines and cables, as well as the location and size of damage points of anti-corrosion coatings of steel pipelines without damaging the ground covering soil. It is one of the necessary instruments for the transformation, maintenance and general survey of underground pipelines in water supply companies, gas companies, railway communications, industrial and mining and infrastructure units. Explain the components of underground pipeline detector 1. High voltage source: used to support discharge; Raise the DC and AC power supply to 3 4KV high voltage, the current is about 20mA high voltage power supply, and the other is 20kHz or 40KHz high frequency power supply. 2. Discharge electrode: send out high-voltage arc to melt the optical fiber; A pair of electrodes * * in a 30 degree conical shape are processed from gold tungsten rods and installed on the electrode frame. The electrode * * spacing is generally 0.7mm; When the high-voltage source is connected, an arc will be generated to fuse the optical fiber at the center of the arc. The service life of the electrode is generally 4000 times. If the electrode is consumed excessively and continues to be used, the connection loss will be increased. Underground pipeline detector 3. Optical fiber regulating device: used to align the optical fiber; The fine adjustment of the V-groove is realized by a spiral micrometer installed at the end of the long benchmark. The optical fiber placed in the v-lane slot is fixed by the mechanical pressing plate. The fine adjustment of the X and Y directions and the Z axis of the optical fiber are orthogonal to each other. The fine adjustment range is more than ± 10um and the adjustment accuracy is ± 0.1mm. Slide rail of optical fiber welding machine 4. Controller: system algorithm processing; It includes telepresence unit and microprocessor, which is used to complete automatic adjustment, pre fusion, fusion and connection loss estimation. 5. Microscope (optical system): used to help observe the state of optical fiber and welding quality. 6. Underground pipeline detector heater (heat furnace): it is used to heat shrink the heat shrink pipe and increase the strength of optical fiber connection.
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