Cable Diagnosis Dielectric Measurement

2018.12.17
Cable Diagnosis Dielectric Measurement
VLF TD/PD Diagnosis (Old cable over 15 years)
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Old Underground Cable VLF TD/PD Diagnosis
  • - Test splices of the termination for the condition of the cable
  • - After the diagnosis, 2nd diagnosis within 5~10 years is necessary for the managing the cable trend
  • - VLF TD Diagnosis: Min : 30m / Max : 1.5km (recommend 1.0km)
  • - VLF PD Diagnosis: Min : 30m / Max : 12.8km
VLF TD/PD Diagnosis (New cables)
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New Underground Cable VLF TD/PD Diagnosis (30 min.)
  • - Test splices of the termination for the condition of the cable
  • - VLF TD : 0.1Hz Test Sine wave with size of phase voltage 3Uo for 30min.
  • - VLF PD : VLF TD Test for 30 min., PD Test (1.0Uo, 1.25Uo, 1.5Uo, 1.75Uo)
  • - VLF TD Diagnosis: Min : No limit / Max : Depend on Equipment
  • - VLF PD Diagnosis: Min : 30m / Max : 12.8km
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