Power Electronics, Motors & Drives worked example

Inverter Burn-in Capacity at 99% expected burn-in oven uptime: a worked example

This scenario runs the inverter burn-in capacity calculation on the strong side: 99% expected burn-in oven uptime, with every other input held at its documented default. Use it when checking whether burn-in racks, thermal chambers, power supplies, or load banks can support the inverter or drive build schedule.

The inputs for this scenario

  • Inverters loaded per burn-in cycle: 4 inverters / cycle (unchanged)
  • Planned burn-in cycles in the period: 480 cycles (unchanged)
  • Expected burn-in oven uptime: 99 % (raised for this scenario; the documented default is 90)
  • Expected burn-in first-pass yield: 97 % (unchanged)

Working through the calculation

  • Applying the documented formula (Gross inverter burn-in capacity = inverters per burn-in cycle × planned burn-in cycles) to the inputs above produces each figure below.
  • At this operating point the engine returns 1,844 inverters for good inverter burn-in capacity, the number this scenario is built around.
  • At this operating point the engine returns 1,920 inverters for gross inverter burn-in capacity.
  • At this operating point the engine returns 19.2 inverters for burn-in downtime loss.
  • At this operating point the engine returns 57.02 inverters for burn-in yield loss.

How this compares with the baseline

  • Against the tool's baseline example, where expected burn-in oven uptime sits at 90% and the headline result is 1,676 inverters, this scenario comes in 10% above the baseline at 1,844 inverters.
  • Use it when sizing a burn-in cell, committing a shipment window, or quantifying throughput lost to chamber downtime and burn-in fallout. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Good inverter burn-in capacity: 1,844 inverters (headline result)
  • Gross inverter burn-in capacity: 1,920 inverters
  • Burn-in downtime loss: 19.2 inverters
  • Burn-in yield loss: 57.02 inverters

Run it with your numbers

  • Every input above is editable in the live Inverter Burn-in Capacity calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.