Online shopping 》

A brief introduction to the difficulties of cable fault location

source:Industry News    release time:2022-09-21    Article author:sznbone     Popular:saso power plug


  Due to the variability of the power cable laying environment, coupled with the application of various cables and their accessories new materials in the cable line, the difficulty of power cable field fault location is increasing day by day.

  The difficulty of on-site cable fault location is highlighted in the fault location of directly buried power cable lines. At present, for high-resistance faults in power cable lines, although there are relevant classic technical documents and advanced fault detectors available. However, when using a professional cable fault locator for localization, some special and difficult faults that cannot be located are sometimes encountered. For example, the creepage flashover fault that occurs locally on the insulation surface of the terminal head and the intermediate head of the medium-voltage cross-linked power cable, the precise location of the metal short-circuit fault, etc., the use of professional cable fault locators often appears powerless or powerless. .

  For common cable faults, using market-purchased cable fault locators can generally determine the location of the fault point within minutes or hours. However, when encountering special difficult faults and the detection is not smooth, it may be necessary to call multiple cable fault detectors with different functions to test repeatedly, and take turns to detect and locate, compare and confirm. The types of these fault detectors mainly include various cable fault detectors designed, manufactured and developed based on the principles of the bridge method and the waveform method. In this way, it may take several days or even longer to locate. In this way, when you are lucky, you can determine The location of the fault point, when bad luck, the location of the fault point is still uncertain.

  In the northern region of my country, the ground is frozen in winter, so the direct buried cable fails, and the actual fault finding and processing process is actually a very hard work. First of all, the cable fault locating instrument used must have high accuracy, and secondly, there must be corresponding personnel who have a clear understanding of the actual laying route of the cable. Although some cable fault detection instruments are now equipped with a cable path tester, they must also have Only with the cooperation of on-site personnel who know the approximate laying path of the cable can the positioning accuracy be improved. The actual handling process of cable faults is sometimes 30% human and 70% machine.

  At present, there are many manufacturers of cable fault detection instruments on the market. There are various types of detectors, but in practice, they cannot locate all cable faults. In actual use, the instrument is often only valid for one or several fault types, and it is still helpless for some faults. The current electric power user department hopes to spend a lot of money to purchase a universal cable fault tester with complete functions and high positioning accuracy (including rough positioning and precise measuring point functions) to quickly and effectively solve all actual cable faults. But it's actually hard to buy. There are a variety of new and updated cable fault detectors on the market. However, on-site actual detection will still encounter some technical difficulties that cannot be located by the cable fault instrument. I think the reasons mainly come from two aspects: First, the various insulation, filling and wrapping materials currently used in cables and their accessories are constantly being developed and updated, resulting in constant changes in the types of cable faults; second, the market for cable fault detectors The demand is limited and the relevant R&D personnel are scarce, resulting in a delay in the availability of portable, high-precision, intelligent and multi-functional cable fault detectors. It is believed that with the advent of the era of intelligent power grid and the rapid development of cable fault detection technology, cable fault location will become a very simple and easy task.

Read recommendations:

Heng-well 16A 250V KC Certificate Korea 3 Pin To IEC C5 For Laptop Computer Korean Kc Power Cord

HENG-WELL C13 For Computer AC Power Extension Cable 3 Pin plug 10A 250V Brazil Power Cord

HENG-WELL 2-4 Pins Electric Bicycle Waterproof Extend Cable Connector For Ebike 2+4 Pins Socket

It's cold, don't let your power cord catch a cold or fever,Cable extension factory

Differences in line design between north and south wind farms

Leave message

Popular products

Heng-well C13 C14 Electric Extension Power Cable UL VDE C13 c14 Extension Cord


HENG-WELL Italy 3 Pin Plug Extension Wire C5 Connector Italy Power Cord


Hot sale 3 Pin Power Cable 13A 250V For Computer Laptop SASO AC Saudi Arabia Power Cord


LP charging interface type 2 (socket wiring type)


Heng-well C13 C14 Electric Extension Power Supply AC C13 Power Cable


Heng-well European 16A 250V 3Pin Computer Laptop Power Cable 3 Prong Eu Power Cord


Heng-well India BIS Certificate 2 Prong 6A 250V Power Cable 2 Pin India Power Cord


EV charging cable


HENG-WELL 360 Degrees Swivel Power Cord 2 Pin For Hair Straightener Curler Swivel Power Cord


Model:C19 C20P AC Power Cord


HENG-WELL 2 pin euro power cord for straight hair straightener 360 degree swivel power cord


Heng-well Factory Price 3pins plug power cord


Heng-well European 2 Prong Electric Power Plug 2.5A 250V 2 Pin Eu Power Cord


Heng-Well 2 Pin Plug Power Extension Cord 6A 250V TISI Electric Cord Thailand Power Cord




Heng-well European 2.5A 250V Angle Plug 2 Pin Eu Power Cord


HENG-WELL Waterproof Electric E-Bike 2+4 Pins Extend Cord Connector For E-bike 2 Pins 4 Pins Socket


Model AC Power Cord


Heng-well M25 2Pins for Power 4pin For Signal Moto Bike New Energy Waterproof Connector


HENG-WELL Eu 2.5A 250V 90 Degrees Hair Straightener Swivel Power Cord


Heng-well Factory Price 3pins plug power cord


Korean 16A 250V 3 Pin Plug Electrical Plug KC Certificates Ac Korea Power Cord


Model:DL-C06 AC Power Cord


Heng-well C13 C14 Extension Cord VDE UL Approval 3 Pin Male to Female Power Extension Cord


Heng-well Euro 3 Pin Extension Power For Computer Laptop Power Extension Cable Eu Power Cord


EV charging cable


Model:LP 25A


Heng-well Japan PSE JET 2 Pin 125V Plug 2 Prong Extension Plug 2 Pin Pse Power Cord


HENG-WELL 9 Pins WaterProof Connector Cord Electric Bike Motor Cables 3P+6P 9 Pins Connector


Heng-well UL Extension Cable 10A 250V IEC C13 C14 Connector AC Extension Cord


Related Information

What are the technical characteristics of wire and cable?


Problems that should be paid attention to in the field repair of cables


A brief introduction to the difficulties of cable fault location


Talking about the complexity of cable field service


Partial discharge test background influencing factors and investigation


Analysis and Discussion on Operation Faults of Low Voltage Directly Buried Armored Cables


A new generation of energy-saving and environmentally friendly heating cables


Precautions for the use of rubber antioxidants for wires and cables.us power cord wholesale


Economic comparison between UHV power transmission and ultra-high voltage power transmission


Matters needing attention in cable installation.laptop cables


What is the square number of cable wires?


Several branches of optical fiber technology and their development trends


Introduce the difference between several cables


Specifications and models of cable trays


Characteristics and performance of photovoltaic cables


Characteristics and application occasions of fire-resistant and flame-retardant cables


Analysis on the Estimate and Selection of the Specifications of Household Lines


Discuss the national standard for the specification of cable fire protection


Submarine cables.North America plug 13a


cable structure


The role and advantages and disadvantages of cable lines


Introduce the characteristics and application occasions of several fire-resistant and flame-retardan


Submarine cable research and development


Partial discharge test method and problem analysis of medium voltage cross-linked cable


The difference between photovoltaic cables and ordinary cables


cable holder


What is the scope of the cable


What is the wire and cable standard? Examples of specifications and parameters


List of specifications and models of national standard cables


Simple calculation of cable current carrying capacity.US PLUG Sale