Power Electronics, Motors & Drives worked example

High-Voltage Test Workload at 99% target hv test coverage: a worked example

What does the result look like when target hv test coverage reaches 99%? The full calculation is worked below with real intermediate numbers. Use it when planning hipot, insulation resistance, surge, partial discharge, or dielectric test workload for motors, inverters, drives, and power supplies.

The inputs for this scenario

  • Units scheduled for HV test: 8 units (unchanged)
  • Total units built or released: 250 units (unchanged)
  • Target HV test coverage: 99 % (raised for this scenario; the documented default is 95)

Working through the calculation

  • Applying the documented formula (High-voltage test workload rate = units scheduled for HV test ÷ total units built or released × 100) to the inputs above produces each figure below.
  • At this operating point the engine returns 3.2 % for high-voltage test coverage, the number this scenario is built around.
  • At this operating point the engine returns 95.8 points for hv test coverage gap.
  • At this operating point the engine returns 8 count for units scheduled for hv test.
  • At this operating point the engine returns 250 count for total units built or released.

How this compares with the baseline

  • Against the tool's baseline example, where target hv test coverage sits at 95% and the headline result is 3.2 %, this scenario lands almost exactly on the baseline at 3.2 %.
  • A figure at this level is achievable when target hv test coverage is genuinely sustained, not just peaked for a shift. It measures coverage, not test outcomes — 100% coverage with a wrong test voltage still misses faults.

Results at a glance

  • High-voltage test coverage: 3.2 % (headline result)
  • HV test coverage gap: 95.8 points
  • Units scheduled for HV test: 8 count
  • Total units built or released: 250 count

Run it with your numbers

  • Every input above is editable in the live High-Voltage Test Workload calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.