Independent HV intelligence
The last inch of high voltage.
High Voltage Insights covers HV cable termination technology — stress cones, field grading materials, and the standards that govern them — for engineers who want the material chemistry and test data, not marketing copy.
Latest coverage
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Testing Partial Discharge Testing: Why Terminations Fail Acceptance Most Field data puts termination PD non-pass rates an order of magnitude above cable. What the standards require, and why test sensitivity decides the result.
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R&D Nonlinear Field Grading: How FGM Stress Cones Actually Work The geometric stress cone has been the default fix for field crowding at a cable termination for a century. Nonlinear field grading materials attack the same problem chemically instead.
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Materials Cold-Shrink vs. Heat-Shrink Terminations: What Actually Changed Cold-shrink terminations skip the torch. Here's what that trades away, what it doesn't, and where heat-shrink still earns its place on a spec sheet.