CableQ Non-Destructive XLPE Cable Testing

Testing & Analysis

CableQ Non-Destructive XLPE Cable Testing

Testing & Analysis
CableQ’s technology was developed by National Research Council Canada, the government’s premier research and technology organization. This revolutionary technology was developed and refined with over a decade of field testing. Since 2011, utilities have been using this technology exclusively as part of their cable management program to successfully diagnose the condition of XLPE cables. Our unique and proprietary service is an on-site diagnostic test that measures the depolarization current within an isolated and de-energized cable. The results categorize the cable condition as good, fair, or poor. One of the main aging mechanisms of underground XLPE cables is the development of water trees. Water trees are small tree-shaped structures of moisture and ionic impurities that diffuse within the insulation of an XLPE cable and propagate under the effect of an electric field. Over time, water trees can grow and degrade the quality of the insulation. CableQ uses a health index to assess the condition of medium voltage cable based on the progression of water trees. There has been a consistent correlation between a higher value health index and the length and density of water trees within the insulation. Our method gives an accurate representation of the health of the cable by diagnosing the condition of the insulation.

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XLPE Cable Testing

Truly Non-Destructive underground cable testing