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  TESTING INSTRUMENT FOR POWER CABLE TESTING :                                                                               BACK

  1.0   HV / MV Power Cables testing by : Very Low Frequency (VLF) test method Set-1

           1.1   The new test method for testing cables by AC sinusoidal waveform.
                   
           1.2   Achieved by reducing test frequency to 0.2 Hz.

           1.3   The VLF test set detects ageing of the cable insulation, defects in insulation, by
                    measuring the dielectric loss of the insulation.


           1.4
   The test set can carry out following tests :

  •   Insulation Resistance measurement.

  •   Polarization Index measurement.

  •   Leakage current measurement.

  •   Capacitance value measurement. Tan delta value measurement.

  •   DC (+ and - Polarity) HV testing.         

     1.5
       This test is used ;

  •   To check the cable insulation during manufacturing stage.

  •   As a routine maintenance test to check the insulation health.

  •   To check the condition of joints.

           1.6   The detailed description of this test can be viewed at ;
                     www.powerlinker.org/htm/VLF.htm

  2.0   HV / MV Power Cables testing by : Very Low Frequency (VLF) test method Set-2

           2.1   The test set can carry out following tests :

       Insulation Resistance measurement.

       Polarization Index measurement.

       Leakage current measurement.

        Capacitance value measurement.

        Tan delta value measurement.

        DC (+ and - Polarity) HV testing.  

           2.2   Compatible for Partial Discharge Detection in Cable.

           2.3   Facility for Cable Sheath Testing.

           2.4   Voltage Wave Shape is independent of Load.

           2.5   Fully symmetrical voltage wave, thus avoiding space charges in XLPE cables.

           2.6   Cable Health Analysis in terms of : Ok / Critical / Bad.

  3.0   Cable Partial Discharge Measurement Test Set :

           3.1   Test set detects Partial Discharges in cable using Very Low Frequency Source.

           32   Modern non destructive method of Partial Discharge detection in cable.

           3.3   Identification and Location of Partial Discharge in cable.

           3.4   Measurement of PD levels of 20 pC.


                                                                                                                                                                     

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                                                                                                                                           Update : 04.03.15