The development of cable fault tester technology is accelerating

Cable fault testerTechnology accelerates development

　　Cable fault testerTo cater to the rapid development of the industrial power industry and the IT era, the limitations of the original cable fault tester have been systematized using an industrial control embedded computer platform system, network service business, and USB communication technology, greatly improving the functionality and utilization value of the cable fault tester as well as convenient on-site environment operation. The cable fault tester system testing consists of three parts: the system host, the fault locator, and the cable routing instrument,Cable fault testerUsed for testing various faults in power cables, searching for cable paths and burial depths, daily maintenance and management of cable archives, as well as testing for open and short circuit faults in coaxial communication cables and local telephone cables. The cable fault tester is used to measure high and low resistance, short circuit, open circuit, broken wire, high resistance leakage, and high resistance flashover faults of various power cables, high-frequency coaxial cables, local telephone cables, and two or more evenly laid buried wires with different cross-sections and media.

Power transmission is an important part of the power supply system, and in recent years, due to the acceleration of infrastructure construction and the need for safe power supply, buried power cables have been widely used in the power facilities of urban and rural areas as well as industrial and mining enterprises. However, due to the cable being buried underground and the length of the line, it can be difficult to locate the fault point when the cable malfunctions and affects normal power supply. If there is no cable fault tester, relying solely on manual search for cable fault points will not only waste manpower and material resources, but also cause incalculable power outage losses. Therefore, power cable fault testing has become one of the important issues that have plagued the normal power supply of power supply departments for many years. In recent years, cable fault tester technology has made significant progress, and cable fault testers have emerged to assist in testing.

(1) The properties of power cables. The insulated core wires of the cable, as well as between the insulated core wires and the sheath or shielding layer, are mutually insulated.

(2) The reasons for power failures. Mechanical damage, direct external force damage to the cable, such as vibration, thermal expansion and contraction, causing damage to the lead sheath, etc; B insulation is affected by moisture, which may invade due to improper construction of the terminal or connection box; C Insulation aging; Corrosion of the protective layer; Overvoltage, lightning strikes or other overvoltage causing cable breakdown; Overheating, overload, or poor heat dissipation can cause insulation breakdown of the cable; The material itself has defects.