NOYAFA's Planet Poe Tester

NOYAFA's Planet Poe Tester

2021-11-05
NOYAFA
31

On this page, you can find quality content focused on planet poe tester. You can also get the latest products and articles that are related to planet poe tester for free. If you have any questions or want to get more information on planet poe tester, please feel free to contact us.

planet poe tester has undergone a sophisticated and precise manufacturing process offered in SHENZHEN NOYAFA ELECTRONIC CO.,LIMITED. The product strives to offer the best quality and durability ever to make sure that clients will have no worry about products' performance and possible vulnerability. It is believed to have a long service life with improved toughness together with strong reliability.NOYAFA products have helped us enlarge the brand influence in the global market. A number of customers claim that they have received more benefits thanks to the guaranteed quality and favorable price. As a brand that focuses on word-of-mouth marketing, we spare no efforts to take the 'Customer First and Quality Foremost' into serious consideration and expand our customer base.Almost all products at Best Cable Tester Supplier in China _ Noyafa, including planet poe tester can be customized to customer's design preference. Backed by our strong technical strength, customers are able to get a professional and satisfying customization service.
more products
recommended articles
Info Center News
Cable Fault Tester
Cable Fault Tester
Cable fault detector can be seen everywhere in our daily life. Cable fault detector plays a lot of roles. Cables on the road can divert people and vehicles. The guardrail beside the river can protect people from falling into the river. The guardrail beside the lawn can protect the lawn from being trampled by animals and people. Therefore, the role of guardrail is still great, The installation of guardrail is also very important. The installation of river guardrail needs special attention. Let's follow the traffic guardrail manufacturer to see how to install River guardrail. The river guardrail is a guardrail product installed next to the river to prevent pedestrians on the river road from falling into the river. The base to be fixed during the installation of the river guardrail can only be in the original position, which may cause the base to not be fixed and lose the significance of setting the river guardrail. Simply put, it is to install the guardrail at an oblique angle, hit 2 Road nails to fix the base, and the remaining 2 nail holes are used for later maintenance. After the base of the river guardrail is fixed, the column is installed. Insert the column into the base, and then install the expansion screw. After the screw is fixed, two people need to cooperate when tightening the screw. One person holds the column to keep it vertical. When tightening the screw, the other person can tighten the screws at both ends. In this way, the column and base are installed. The next step is to install the guardrail piece. The steel connecting sleeve connects the river guardrail and the column. This is generally fixed on the column before leaving the factory, so as to reduce the on-site operation process of constructors. Align the guardrail piece with the upper and lower connecting sleeves of the column, and connect the left and right accurately. The above is the introduction to the steps of installing the river guardrail. When installing the river guardrail, we should follow the steps strictly and master the installation skills of the river guardrail, so that we can make fewer mistakes in installation and ensure the performance of the river guardrail in the process of use. We are a professional guardrail manufacturer. If you need to buy our guardrail products, you can call us to communicate with us.
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!
Common Detection Methods of Power Cable Fault Tester
Common Detection Methods of Power Cable Fault Tester
Power cable is an underground equipment. Generally, the soil layer plays a protective role for the cable. However, once a fault occurs, it is also very difficult to find it. It takes a lot of time, which is a great waste of human and material resources. In this case, it is necessary to use cable fault detection equipment, such as power cable fault tester. The initial measurement method of common fault cable is divided into control circuit bridge balance method, bottom pressure single pulse reflector method and flash detector method. In the initial measurement method of cable fault, the appropriate cable fault detector is adopted according to the different characteristics of common faults, The distance between the common fault point and the test case and the relative path of the common fault point are accurately measured and calculated by using the cable route technical document. There are three key methods of initial measurement: control circuit bridge balance method, bottom pressure single pulse reflector method and flash detector method. The method to improve the sensitivity of the galvanometer can refit the DC amplifier in front of the galvanometer, but the gain value of the amplifier is too high, resulting in serious zero drift and the bridge can not be balanced. When the working voltage of the switching power supply of the bridge rises, the compressive strength of the insulating layer of the bridge body to the ground must be relatively increased and the safety precautions for the maintenance and actual operation personnel shall be taken. When the working voltage of the switching power supply rises to a certain value, the common fault resistor is generally unstable. If the resistance of the grounding wire suddenly decreases to zero, High voltage will be applied to the bridge and the galvanometer will be damaged. Common use methods of power cable fault tester. The characteristics and provisions of the bridge method are: it is only applicable to accurately measure the server downtime in the cable line. If there are many other common fault points in the line, it can not be used. The less the jumper wire at the other end of the cable route, the higher the jumper wire. Its cross section shall be close to the cross section of the cable conductor, and the connection shall be tightened to make its contact resistance close to zero. When raising the experimental working voltage for fault test of high resistor grounding device, be sure to give a very safe prompt. After the common fault burn through equipment is used to convert the common fault of flashover into the common fault of grounding device, the power bridge method shall be used for accurate measurement immediately, so as to prevent the insulation layer from being repaired and the common fault point from being closed again. In addition, it is not necessary to burn the resistance of the grounding wire of common faults too low, so as to prevent the difficulty of producing too little sound when using the precise measuring point method. The bottom pressure single pulse reflector method, commonly known as the single pulse method, uses the basic principle of the radio wave reflector caused by the mismatch of wave impedance when the differential signal is dispersed in the cable line. The time of the single pulse wave reflector and the wave speed of the cable are measured on the digital oscilloscope to clarify the distance between the cable fault points. In general, the characteristic impedance in the cable line is not matched with the right point. In addition to the disconnection (lead) of the electrical conductor, short circuit fault and common faults of the grounding device, there are all points with uneven characteristic impedance at the cable joint and where the cable crosses the metal material pipeline, which will also cause the reflection surface of the wave. Be sure to identify them carefully during detection. Especially when the resistance of the grounding wire exceeds about 2 3 times of the wave impedance of the cable, the fluctuation amplitude of the reflecting surface is small, and it is impossible to identify common fault points. The single pulse method is most suitable for measuring the common faults of disconnection. In addition, it is also suitable for measuring the resistance of grounding wire less than 100 & omega; Faulty cable.
Brief Introduction of Tester for High Voltage Cable Fault
Brief Introduction of Tester for High Voltage Cable Fault
Brief introduction to high voltage cable fault tester product nickname: cable fault tester, high voltage cable fault tester, cable fault tester, point tester, path tester, cable fault Pathfinder, cable fault tracker, portable cable fault location system, cable fault flash tester, cable fault point tester, cable path tester, working principle of high voltage cable fault tester, Smooth wired communication and power transmission depend on the normal operation of cable lines. Once the line is blocked, it will cause the communication to find out the fault in time and eliminate it quickly, which will cause great economic losses and poor social impact. Therefore, the cable fault tester is an important tool to maintain all kinds of cables. The cable fault intelligent tester adopts a variety of fault detection methods, applies contemporary * advanced electronic technology achievements and devices, adopts computer technology and special electronic technology, and combines the company's long-term successful experience in developing cable tester. It is a new high-tech, intelligent and fully functional product. Dear customers: the company also has power cable fault tester, cable fault locator and cable fault tester products. You can call the company's service phone through the web page 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!
Analysis on Fault Location Mode of Power Cable
Analysis on Fault Location Mode of Power Cable
Cable faults also occur in the process of cable laying. Due to different cable laying methods, the difficulty of cable fault location increases gradually. Among them, the positioning of bridge, tunnel and groove is relatively simple, and the direct buried positioning is relatively difficult. Generally, a special cable fault location device (also known as cable fault tester) is used, which can be located in dozens of minutes, Special faults often take 4-5 days or even longer to locate. Now let's analyze the fault location mode of power cable. When using echo method to locate power cable fault, sometimes by transferring fault phase and wiring mode, complex fault will often be transformed into simple fault to quickly determine fault location. It is of great significance for the power supply user department to win time for the emergency repair of on-site lines. Low voltage power cables are generally multi-core cables. When faults occur in continuous use after laying, they generally show two core and multi-core phase to phase or phase to ground short circuit faults. Sometimes when it is detected that the fault waveform collected by one core is not ideal, it can be considered to convert the wiring to other fault cores for fault waveform detection, which often has unexpected effects, The collected and detected waveforms will become more typical and regular, so the specific location of cable fault point can be determined quickly. During the long-term on-site measurement of cable customers, it is found that the fault of small section copper core directly buried power cable (35mm2 and below) and aluminum core cable may be accompanied by short circuit and wire breakage at the same time. During on-site detection, converting short-circuit fault into broken line fault measurement according to the different fault nature of each fault core will often double everything with half the effort. For the medium voltage direct buried power cable with extruded armor as the inner lining, the fault is mostly caused by external mechanical damage. When the insulation core fails, the inner lining may have been damaged. When the cable insulation fault is special and it is difficult to collect the waveform with a professional cable fault tester, the acoustic method can be considered, When the high voltage pulse is directly applied between the steel strip and copper shielding layer of the cable, it will often be fixed quickly. In the field measurement process, we also found that when using the acoustic method to locate the fault point of low-voltage cable. When the high-voltage line and ground wire are connected between the bad phase and the metal shield or armor, due to the low resistance metal connection state of the insulation resistance of the two, the sound is very small, so the probe can not be used to listen to the fixed point, and the effect is not ideal. Through the actual listening side on the site for many times, it is found that the distance between the discharge ball gaps is appropriately increased. At the same time, if the high voltage and grounding wire are connected between the two faulty phases, the discharge sound will become louder and the fault point will be determined quickly.
Do You Know How to Purchase Cable Fault Tester
Do You Know How to Purchase Cable Fault Tester
In today's society, electricity is one of the indispensable and important resources in people's life. Cables bear the responsibility of transporting electric energy. We all know that anything used for a long time may fail, and so does cables. Cable fault detector is a special equipment to solve cable fault. Xiaobian will show you how to purchase cable fault tester today. Electric power has been a necessary resource for people's daily life. The State Grid is all over the country. Due to the actual needs of cable production process fault resolution and customer site cable fault location, not only cable manufacturers buy cable fault detectors to solve all kinds of cable faults in the actual cable production process and customer use site. Power companies rely on cable fault tester to accurately and quickly solve cable fault points and quickly modify power (or communication) faults. Therefore, the configuration of cable fault tester is different according to different occasions and requirements. As a cable manufacturer, when purchasing the cable fault detector, it is purchased in complete sets of high and low voltage, and the equipment components are 6-10 pieces. In case of direct buried cable fault location at the customer's site, the handling and transportation of the whole set of equipment must be transported by a special cable fault detection vehicle, otherwise the transportation quality of the instrument is not guaranteed. There are also some special cable fault detectors, such as the railway household coat cable fault detector. More specifically, it can be called the railway single core cable outer sheath fault tester. These two configured cable fault testers are suitable for railway. According to the characteristics of railway cable outer sheath fault, under the condition of separation of cable sheath and shielding layer, The bridge method or voltage drop method is used to initially measure the grounding fault of the cable outer sheath, and then cooperate with the special receiver to accurately find the fault point. At present, the cable fault detector sold on the market is mainly divided into two types: 1. It is a cable fault detector designed according to the principle of echo method: the components mainly include intelligent waveform detection analyzer, Pathfinder, DC high-voltage generator (including console and AC / DC high-voltage test transformer), capacitance, ball gap, pointing instrument, etc. 2. It is a cable fault detector designed and manufactured according to the principle of bridge method: the components mainly include fault location bridge (high and low voltage bridge), pointing instrument, path instrument, wave reflection fault location instrument, etc. The above two kinds of cable fault detectors include coarse side positioning part and accurate fixed point part of cable fault. Intelligent cable fault tester will be a new demand. The above is the purchasing knowledge of cable fault tester. I hope it can help those in need.
Why Hand Held Security Metal Detectors Is the Better of the Other
Why Hand Held Security Metal Detectors Is the Better of the Other
Metal detectors are common today at sporting events, outdoor events and gatherings, airports, night clubs, prisons, schools, production and distribution facilities. Developed in the 1960s at the beginning of the modern logistics age, portable metal detectors are a mainstay of employee security in many modern distribution centers. They are also used for security at checkpoints at airports, schools and courthouses, prisons and military installations. Today, you can no longer detect anything that has been stolen from a warehouse or a distribution centre. What follows is an overview of current security screening technologies, how they work and what kind of health problems they can cause. Anyone who has flown on an aircraft in the past ten years knows the use of handsticks for individual screenings, walking metal detectors, full-body scanners and luggage X-ray machines. One of the easiest and most cost-effective scanning devices is the hand-held detection stick. Hand-held detectors allow security personnel to find hidden metal objects that pose a security threat. High-quality safety metal detectors offer various alarm indicators, including optical LEDs, selectable acoustic alarms and vibrations. High-quality safety metal detectors are self-calibrated and make regular sensitivity adjustments superfluous. They are lightweight and equipped with a standard 9V battery that allows up to 80 hours of continuous operation. Handheld metal detectors are affordable and are often used in various facilities and checkpoints to improve security. Airport security uses large walk-in metal detectors to speed up security checks. Hand-held metal detectors, like most of them, use a similar electromagnetic field technology (EMF) to determine if you have metal on your body that cannot be used in an X-ray image. Nightclub staff have to scan guests as they enter the premises, and outdoor music events and sports stadiums use metal detectors to increase security. There are two main reasons why safety bars are used: to protect security personnel when searching for a person, and to protect and avoid a pat on the back. The use of a portable metal detector to scan the body allows security personnel to find contraband without putting anything sharp in their pockets. Individual screens, such as hand-held scanners and wands, can come in handy when your throughput and volume requirements are low. Safety bars warn you of a target with acoustic sound, target recognition light, vibration or a combination of these three. You can select the device that offers the most appropriate target response for your environment. Most importantly, the target of a weapon gives the member of the security team extra time to address the situation. Since hand-held detectors emit no radiation like X-ray machines they use an electromagnetic field (EMF) to detect metals. Security personnel will be able to hear acoustic sounds through an external speaker connected to a headset that goes through metal objects. Due to the large noise level in the vicinity, the security team member does not have to look at the metal detector, but only feel the vibration. A series of hijackings in 1972 led the United States to introduce metal detector technology to monitor passengers using magnetometers designed to log flight operations and detect spikes in trees. In 1995, systems such as Metor 200 emerged that were able to indicate the approximate height of metal objects on the ground, which allowed security personnel to pinpoint the source of the signal. A common development with other applications of metal detectors is that alternating current pulse systems use special coils and electronics that can be moved to improve the discrimination of the system.
Take Measures to Prevent Cable Failure
Take Measures to Prevent Cable Failure
According to the cause analysis of insulation, accessories and outer sheath faults, it can be seen that the cable line project is a systematic project. Only by managing the whole process from the aspects of design, construction, operation and maintenance can its safe operation be guaranteed to the greatest extent. (1) From the beginning of the design, the grounding system used by the cable shall be fully understood, and the cable conforming to its voltage level shall be selected to avoid the cable working under long-term overvoltage. The selection of outer sheath shall meet the requirements of service environment and service life. At the same time, the selection of cable sheath protector shall meet the principle that the protector can reliably pass through the grounding current without damage during relative grounding. (2) The selection of cable route shall avoid the influence of external environment such as overheating, corrosion and external force damage on the cable. At the same time, it shall also avoid the influence of internal factors causing overheating due to too concentrated cable laying, resulting in the failure of timely diffusion of heat. In addition, the cable path of double circuit power supply is not recommended to be laid in the pipeline of the same path to prevent simultaneous damage and large-area power failure. (3) Strengthen the selection of cables and cable accessories, manufacturer supervision, arrival acceptance and other work to ensure the quality level of cables and cable accessories. During the on-site inspection, the manufacturer, the construction party, the supervisor and the project competent department shall be present, check one by one according to the packing list, timely record the problems found and put forward rectification suggestions, which shall be signed and approved by many parties. After the inspection, the parts susceptible to moisture shall be sealed in time to prevent moisture from affecting normal use. (4) Strengthen personnel training, conduct necessary business qualification and technical evaluation for cable head fabrication personnel, and work with certificates. In case of two consecutive failures due to manufacturing reasons within the warranty period, the cable head manufacturing qualification shall be cancelled, and it can be re employed only after passing the re training and assessment. (5) Strengthen the acceptance of concealed works and intermediate links in all links of cable engineering, strictly control the quality acceptance, thoroughly rectify the defects and hidden dangers found in the acceptance of civil engineering, electrical and other projects, make various records, and leave photos, films and other materials if necessary. (6) Advanced on-line monitoring technologies such as outer sheath circulation on-line monitoring technology, on-line optical fiber temperature measurement technology and on-line partial discharge detection technology are used to strengthen the real-time on-line operation monitoring of cables, find hidden defects in advance and avoid power failure.
no data
no data
Contact Us
Leave a message
We welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.
During 15 years development, Noyafa has become the most famous brand in cable testing industry in China. With excellent production capability, reliable quality, good after-sales service, we get good reputation from customers all over the world.
no data
Contact Person:Lory Liu
Contact Us

+86-0755-27530990

If you have any question, please contact Lorry via

wire@noyafa.com

Add:Wanjing Business Center, #2506 Xinyu Road, Xinqiao, Baoan District, Shenzhen, China

Copyright © 2021 NOYAFA | Sitemap 

chat online
Please message us and we ensure to respond ASAP, what product you intrested in?