Cable insulation is damaged or aging, short circuit, disconnection, grounding, etc. may occur in use, affecting the safe operation of the power system. The role of the power cable in the power transmission and distribution system is important, so regular or irregular detection of the power cable fault has very cable insulation damage or aging, short-circuit, disconnection, grounding, etc. may occur in use, affect the safety of power systems run. The role of the power cable in the power transmission power system is important, so there is a very important fact that the failure of the power cable period period or does not regularly detects.
The following cable identifier manufacturers give you a common power cable test method. Main insulation AC withstand voltage test (series resonance test equipment) is an effective method of testing cable insulation to withstand various overvoltage capabilities. Cable fault location, cable path recognition: Cable fault detector system consists of cable fault detector, high pressure pulse generator, fixed-point instrument and cable integrated detector for cable low-resistance, short circuit, open circuit failure and high resistance leakage and high resistance Flash fault detection, the correct direction of the underground cable, the opening, short circuit and outer skin failure point of the positioning cable.
Board discharge examination: Unlike the discharge of the transformer discharge using ultrasonic detector products, the cable is placed using a vibration wave partial discharge detection, which is based on the LC damping vibration principle, and the frequency is used in the range of 20-800 Hz. Vibration wave The voltage instead of the working frequency AC voltage detecting device, mainly used to detect the main insulation, joint and terminal of the cable, and the waveform and frequency are close to the working frequency sine wave, and the time is short, which does not cause damage to the cable. Infrared temperature measurement: Infrared thermal imaging instrument, an infrared radioblast distribution pattern of the temperature-performed target and optical imaging mirror is reflected on the photosensitive member of the infrared thermometer to obtain an infrared thermal image map, the hot image map and the object The thermal distribution field of the surface corresponds to the infrared radiation signal of the cable surface using an infrared thermal imaging instrument. Cable identifier manufacturers summarize common power cable detection classifications, in practical applications, power cable detection is closely related to insulator detection, and usual detection requires the use of various insulator fault detector, insulator distribution voltage detector and other products to detect the insulator Fault, especially in the spring inspection of power companies, power cables, switchgear, transformers, overhead lines, insulators, various gold deposits, etc., ensure the overall operation of the power system.
The above is the knowledge sharing that the cable identifier manufacturers give you, hoping to bring some help to people need. If you have any questions about this, you can continue to pay attention to Xiaobian, which will bring you more exciting content. We will see you next time! .
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