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Meetod kaabli rikkepunkti leidmiseks

2021-05-20


Praegu kasutatakse tavaliselt kasutatavate rikete mõõtmise meetodite puhul takistuse suurust, mis on proportsionaalne pikkusegakaabel, use the bridge principle to measure the resistance between the end of the faulty kaabel and the fault point, and compare it with the non-faulty phase, and then determine the distance to the fault point .


Mahtuvussilla meetod

Kasutage mahtuvussilda vooluahela lahtiühendamise ja lahtiühendamise mõõtmisekskaabel. When the kaabel is open circuit, because the DC bridge measurement arm fails to form a DC path, the resistance bridge method will not be able to measure the distance to the fault. Only the capacitance bridge method can be used. And use the high-voltage bridge method to measure the leakage and high-resistance breakdown.

Seisva laine meetod.

Mikrolaineahela ülekandeliini põhimõtte kohaselt kasutatakse rikke testimiseks ülekandeliini seisva laine resonantsi nähtustkaabel. See meetod sobib väikese takistuse ja avatud ahela rikete mõõtmiseks.

Pulse meetod.

Kasutage alalisvoolu kõrgepinge signaali allikat, et edastada impulssignaalid otse vigasele südamikule. Kasutage seadet signaali vastuvõtmiseks ja selle täpseks paigutamiseks.

 Combining the above method and technology application, 1. First determine the nature of the kaabel fault, 2. Roughly locate, use the bridge method or the kaabel fault locator to determine the distance of the fault point in meters. 3. Use DC high voltage signal source to directly transmit pulse signals to the faulty core. 4. Use underground kaabel tester to accurately locate, and the error will not exceed half a meter.


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