Cable Partial Discharge Detector

1. Cable Testing Requirements and Preparations Before Testing

1）Prior to partial discharge testing, disconnect and ground the cable, leaving both ends suspended, and set up the safety perimeter.

2) Strive to ensure cable jointsPTDemolition of surge arresters and other equipment.

3) Ensure the cable head is clean and the insulation distance between the cable head and the surrounding grounding parts is adequate.

4) Collect cable parameters such as length, model, type, and commissioning date.

5) Cable Length L: Measurement method on one side of the cable: 50m ≤ L ≤ 3km

Measurement Method at Both Ends of the Cable:L＞3km。

2. Insulation Resistance Testing

10kV Cable Main Insulation Resistance Test Utilizes 2500V Insulation Megger; Insulation Resistance Should Remain Unchanged Before and After Testing; Insulation Resistance Must Exceed 50MΩ for the Next Test Step in the 10kV Cable Main Insulation Resistance Test.

3. Test the intermediate joint position of the cable and the cable length

AdoptedSEBAKMT Easyflex ComMultifunctional Pulse Reflectometer (as shown in the figure)2) Conducted tests on the entire cable length and intermediate joint positions to measure cable length and joint locations, as well as to pre-localize cable short-circuit and open-circuit faults.

Testing Requirements:

The full length of the cable must be accurate for calibration purposes.

2) Ensure intermediate joint measurements are as accurate and detailed as possible, which is beneficial for determining the final location of partial discharge.

3) Measurement Range:50m～15000mThe measurement range needs to be adjusted according to the cable length.