berita industri

Metode untuk menemukan titik kegagalan kabel

2021-05-20


Saat ini, metode pengukuran kesalahan yang umum digunakan terutama menggunakan ukuran resistansi yang proporsional dengan panjangkabel, use the bridge principle to measure the resistance between the end of the faulty kabel and the fault point, and compare it with the non-faulty phase, and then determine the distance to the fault point .


Metode Jembatan Kapasitansi

Gunakan jembatan kapasitansi untuk mengukur rangkaian terbuka dan pemutusankabel. When the kabel 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.

Metode gelombang berdiri.

Menurut prinsip saluran transmisi gelombang mikro, fenomena resonansi gelombang berdiri dari saluran transmisi digunakan untuk menguji kesalahankabel. Metode ini cocok untuk mengukur resistansi rendah dan gangguan rangkaian terbuka.

Metode pulsa.

Gunakan sumber sinyal tegangan tinggi DC untuk secara langsung mengirimkan sinyal pulsa ke inti yang rusak. Gunakan instrumen untuk menerima sinyal dan posisikan secara akurat.

 Combining the above method and technology application, 1. First determine the nature of the kabel fault, 2. Roughly locate, use the bridge method or the kabel 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 kabel tester to accurately locate, and the error will not exceed half a meter.


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