NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
When the cable is faulty, power workers typically need to use a cable fault tester to determine the location of the fault point to facilitate the power worker maintenance cable. What do you need to pay attention to using wire and cable fault tester test failure? Xiaobian's question, the power worker usually needs to use a cable fault tester to determine the location of the fault point to facilitate the power worker maintenance of the cable. What do you need to pay attention to using wire and cable fault tester test failure? Xiaobian has summarized the following points, I hope I can answer questions, I can take a look at it.
1. The gap between the discharge ball should not increase. After using the cable fault synthesis tester, after the position between the fault point, if the gap between the discharge ball is adjusted too large, the impact voltage will become high, the high pressure impact time is too long, the fault point will be short, the fault is not It will be discharged, and it is difficult to find the fault point, so pay attention to the gap between the discharge ball should not be adjusted too much. 2, in special cases, two fault testers can be used.
If the soil layer is too thick, the surrounding environment is large, or the cable itself is damaged, resulting in a weak vibration signal to the ground when the fault is discharged, resulting in difficult to point, can utilize the vibration wave and electromagnetic wave generated at the time of failover. Phenomenon , Use two wire cable fault testers. Work with the probe and probe at the same time. When the two instruments hear the sound, find the loud point, you can accurately find the location of the fault point.
3, how to find the last point when you hear a regular discharge sound, move the tester before and after the direction of the cable to find the position where the discharge sound is large. At this point, pay attention to reduce the output volume of the tester and then slowly find a large position. 4, pay attention to replace the battery.
When the instrument is not in use, you need to turn off the power in time. If the battery is low, it may reduce the sensitivity of the instrument test, resulting in an increase in noise. At this time, I consider the battery.
5, check the wiring. If the shield of the instrument input line is poor contact, the sound of the radio station can be checked correctly. Cable layout: 1. When using the drainage pipe, the following provisions should be observed: 1. The number of tube holes should be appropriately reserved according to the development of development.
2, the wire operating temperature varies greatly, it is advisable to set different drainage groups at the appropriate spacing. The thickness of the C-pipe top soil cannot be less than 0.5 meters. 3, the pipe should be placed on the tonis solid soil, and there is enough spacer to keep it continuous; longitudinal drain slope should not be less than 0.2%.
Second, the requirements of the cable well 1, the following parts should be set in the following parts: (1) The traction limit distance between the cables. (2) Branches of cables and connectors. (3) There is a large change in the direction of the pipeline, or the cable is directly underground by the drain pipe.
(4) The pipe slope is large, and the fixed fixation must be strengthened to prevent the cable from slipping. 2, the cable ditch distribution indoor cable trench in the distribution room is generally used for the transfer, outline of the power distribution equipment, and is basically divided into under the cabinet and double trench. The wall of the cable groove is M5-type steaming gray brick, M5 cement sand cartoon, ditch wall 1: 2 cement mortar smear, criminal top and foundation adopt C20 concrete, equipment under equipment is required.
When using the wire and cable fault tester, you need to pay attention to the above problems. If you have other things that you need to understand, you can continue to pay attention to Xiaobian, which will give you more exciting content.
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