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Actively serve customers and make them truly satisfied
Release time:
2021-04-07
In the process of after-sales service of cable products, we often encounter such users. After they have purchased the cable products, they often encounter early power failure after the cable is used due to improper construction or use. As some users do not have the ability to detect on-site cable faults, they often ask the cable manufacturer to assist in on-site fault location and cause analysis services. Service personnel who have performed cable field fault location all have this experience. To ensure the quality of service in cable field troubleshooting, as after-sales personnel, you need to make preparations in the following three aspects.
1. Actively conduct comprehensive and effective communication with users, fully understand the actual situation of on-site faults, and prepare various inspection equipment before departure. Bring a digital camera when necessary. Laptops and U disks, etc.
Because the professional cable fault detection equipment currently purchased from the market is divided into two parts: high voltage and low voltage, the equipment that needs to be carried may be different for different types of cable faults on site. If you do not fully understand the on-site situation before departure, and carry out equipment that is not complete or insufficient, it will greatly delay the on-site repair time of cable faults and cause greater economic losses to users. This situation may have little impact on short-distance services, but for long-distance and long-distance fault location technical services, the delay may be considerable. Greatly affect the actual service effect of the cable.
2. There must be sufficient ideological understanding and preparation for the harsh environment of the cable fault site.
The use of cables is quite changeable, and they may be used in oilfield bases deep in the barren and human desert. It may also be used in coal mines, and it may also be used in various chemical plants and cement plants newly established on the Gobi Desert. Moreover, most of the cables are located outdoors, and most of the cables are laid in direct burial, bridge, cable trench tunnel, etc. Due to the large temperature difference between day and night in the desert and the Gobi Desert, the process of accurately determining the location of the outdoor direct-buried cable fault may be during the day, and the surface temperature at this time may reach minus 40 ℃, or it may be carried out at night. Back down to about minus 15°C. When the precise measurement of the cable fault point is smooth, the testing process will generally be completed within 1-2 hours, but when the fault is special and the tester lacks practical experience in on-site location, it often takes tens of hours or even days. For continuous fault location work in such a climatic environment, service personnel must have a full understanding of the climate and environmental conditions on site in advance. Prepare all kinds of warm clothes and heatstroke prevention preparations for continuous work on site. Prevent physical injury during on-site service and affect on-site service efficiency.
The height of the bridge used for laying cables is often more than ten meters. If the fault point is located on the high-altitude cable tray. It is often necessary for service personnel to wear safety belts on the bridge to assist users in high-altitude line inspections. This kind of service is often dangerous. Therefore, safety protection work must be done before the bridge is mounted, and safety belts must be worn to prevent accidental injuries when working at heights. The above examples are only some of the on-site situations we have learned, and the actual situation on the site may be more complicated and changeable than what we have learned. Generally, the on-site location and processing time for cable faults are quite tight. At the same time, the service staff usually set off quickly after receiving the notice. This requires us to reasonably arrange time and itinerary in the actual service process, and promptly eliminate line faults for users. Win customer satisfaction.
The occurrence of field cable faults is often sudden, which may occur at night or during holidays. Moreover, the time when the service personnel arrive at the site is also random, and the process of on-site positioning and emergency repair services may be carried out during the day or at night. Therefore, on-site service personnel must have hard-working professionalism, good physical fitness, and rich on-site fault location experience. At the same time, high-precision cable fault detection equipment has become a must for on-site service work. The high-quality on-site cable fault location service not only wins valuable repair time for users, but also reduces users' economic losses. Moreover, it has won users and markets for cable manufacturers.
3. Have excellent cable fault detection experience and rich cable fault cause analysis capabilities
The actual manifestations of cable line faults on site are various, and the actual situation of cable faults encountered by service personnel will be different every time. Some faults occur in the cable terminal head and the middle joint; some cables have only one failure point after the insulation breakdown, and some cables may have two or more failure points after the insulation breakdown; and some cables burn out the entire process after a failure Scrap can not be used.
For different types of cable faults, we must first confirm the nature of the cable fault, and then adopt appropriate fault detection methods. In order to accurately find the location of the cable fault. The types of cable faults are roughly classified into high resistance, low resistance and open circuit faults according to the characteristic impedance of the insulation and the on-off conditions of the line conductors. Different detection methods are selected for different fault properties. They are roughly divided into bridge method, low voltage pulse method, and impulse. Flash method, two-pulse method, three-pulse method, etc. The above method can only complete the rough measurement of the cable fault location and determine the approximate location of the cable fault point. In order to realize the precise measurement of the fault point, it is necessary to use the acoustic measurement method, the audio frequency method and the step voltage method to be assisted. Although there are a large number of various cable fault detectors on the market at present, due to the particularity of the cable manufacturing industry, the development and update speed of cable fault detectors lags behind the development speed of cable materials and cable products. Coupled with the types of direct buried cable faults and the complexity and multiple deformations of the site's topography, we are often unable to accurately locate certain special types of faults in the actual fault detection process using a professional fault detector. At this time, it is often necessary to compare two or more positioning methods with each other to finally determine the precise location of the cable fault point. There are many reasons for cable faults, including mechanical damage faults, overload faults, cable selection, improper laying and use of faults, and so on. As on-site service personnel, only with strong cable fault location and fault cause analysis and judgment capabilities, cable line field test technology and practical experience and skills in the installation of accessories, can quickly and effectively help users eliminate line faults in time, and truly satisfy users.
RELATED INFORMATION
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2021-04-07
RELATED INFORMATION
Henan crosslinking cable co., LTD. (formerly zhengzhou crosslinking cable factory) is specialized in manufacturing wire and cable, trade, production in one of the large enterprises.
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Henan zhongyuan district, zhengzhou city west ring road, university of science and technology park
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