Transformers, Coils & Magnetics Manufacturing worked example

Insulation Layer Count at 65% winding machine uptime: a worked example

This worked example runs the insulation layer count numbers for a tougher week than the baseline: 65% winding machine uptime instead of the typical 90%. Insulation Layer Count capacity tells a transformer or coil shop how many good insulation layers a winding cell can actually lay down in a shift once downtime and scrap are stripped out.

The inputs for this scenario

  • Insulation layers wound per winding cycle: 4 units / cycle (held at the documented default)
  • Winding cycles available per shift: 480 cycles (held at the documented default)
  • Winding machine uptime: 65 % (the input this scenario stresses; the baseline uses 90)
  • First-pass insulation yield: 97 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross insulation layer count capacity = units per cycle × available cycles.
  • Good output capacity works out to 1,211 units at these inputs, and this is the headline figure for the scenario.
  • Gross capacity works out to 1,920 units at these inputs.
  • Uptime loss works out to 672 units at these inputs.
  • Yield loss works out to 37.44 units at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where winding machine uptime sits at 90% and the headline result is 1,676 units, this scenario comes in 27.78% below the baseline at 1,211 units.
  • Use it when planning shift-level winding throughput, checking whether an insulation station can keep up with the wire-winding stations, or quoting lead time on a batch of coils. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Good output capacity: 1,211 units (headline result)
  • Gross capacity: 1,920 units
  • Uptime loss: 672 units
  • Yield loss: 37.44 units

Run it with your numbers

  • To rerun this with your own numbers, open the live Insulation Layer Count calculator, set winding machine uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.