In the process of after-sales service of cable products, we often come across such users, they buy cable products, often due to construction or use of improper way, resulting in the use of the cable after the occurrence of the first power failure. As some users do not have the ability to detect on-site cable faults, often require cable manufacturers to assist in on-site fault location and cause analysis services. The cable field fault location of service personnel, have this experience, to ensure the quality of service in the cable field fault detection, as after-sales personnel need to do the following three aspects of the preparatory work.
1, actively communicate with the user to carry out comprehensive and effective, fully understand the actual situation of the site fault, before departure, ready for all kinds of inspection equipment. If necessary, you need to carry a digital camera. Laptop computers and U disk and so on.
Because the current professional cable fault detection equipment purchased from the market, divided into high-voltage and low-voltage two parts, for the scene of different types of cable faults, the equipment required to carry may be different. If you do not fully understand the situation on the scene before departure, carry equipment is not complete or insufficient, it will greatly delay the cable fault on-site repair time, causing greater economic losses to the user. This situation may not have much impact on the near distance service, but for long distance fault location technical services, the delay may be considerable. Greatly affect the actual service effect of the cable.
2. For the poor environment of the cable fault site to have a full understanding of the mind and preparation. The use of cable occasions are more variable, may be used in the barren desert deep in the oil field base,. May also be used in coal mines, may also be used in the Gobi desert on the newly established a variety of chemical plants and cement factories. And the vast majority of cables are located in the outdoors, most of the cables are buried, bridges, cable trench tunnels and other ways of laying. Due to the desert and the Gobi desert temperature difference between day and night, the outdoor directly buried cable fault location of the site of the precise point process may be in the daytime, when the surface temperature may reach about 40 ℃ above zero, may also be carried out at night, when the temperature back down to about 15 ℃ below zero. When the cable fault point precision testing is smooth, the testing process will generally be completed within 1-2 hours, but when the fault is special and testers on-site positioning of the actual lack of experience, it often takes dozens of hours or even a few days. In such a climatic environment for continuous fault location work, service personnel must have a full understanding of the site climate and environmental conditions in advance. Prepare all kinds of cold clothes and heatproof preparations for continuous on-site work. Prevent the process of on-site service, resulting in physical injury, affecting the efficiency of on-site service.
The bridge used for laying cables is often more than ten meters in height. If the failure point is located on the overhead cable bridge. Often require service personnel to wear insurance on the bridge to assist users to carry out high-altitude patrol, this service often has a certain degree of danger. Therefore, before the bridge to do a good job of safety protection, wear a good safety belt to prevent accidental injury in high-altitude work. The above examples are only some of the field situation we have learned, the actual situation may be more complex and variable than we have learned. The general cable fault site location and processing time is quite tight. At the same time, the service personnel will usually leave quickly after receiving the notice. This requires us to rationalize the time and schedule in the actual service process, and troubleshoot the line for the user in a timely manner. To win the user's satisfaction.
The occurrence of on-site cable faults is often sudden, may occur at night, may also occur during holidays. And service personnel to the scene of the time also has a random, on-site positioning and repair service process may be in the daytime may also be carried out in the dark. Therefore, on-site service personnel must have a hard-working and dedicated spirit, good physical fitness, rich experience in on-site fault location. At the same time, high-precision cable fault detection equipment has also become a must for on-site service work. High-quality on-site cable fault location services not only for the user to win valuable repair time, reduce the user's economic losses. And for cable manufacturers to win the user and the market.
3. With excellent cable fault detection experience and rich cable fault analysis capabilities
Cable line faults in a variety of forms of actual performance, service personnel encountered each time the actual situation of cable faults will be different. Some faults occur in the cable terminal head, intermediate joints; some cable insulation breakdown occurs after only one fault point, while some cable insulation breakdown may occur after two or more fault points; there are also some cable faults throughout the burnt scrap can not be used.
For different types of cable faults, we must first confirm the nature of the cable fault, to take the appropriate fault detection methods