Examples/Control Power Panel Design

Control Power Panel Design

Stop resizing control power sections and redrawing transformer groups every time the load changes.

Change load or voltage and the system updates transformer groups, fuse selection, layout, and generated data automatically. LogiDraft applies rule-driven logic so the drawing and data stay in sync.

Change control load and watch transformer groups and fuse sizing update instantly.

Change load and see it update ->Open in workspace
Load Clamp100 to 3000 VA
Incoming Voltage240 or 480 V
Control Voltage24 or 120 V
Scaling Behavior1 to 3 transformer groups

Automatic scaling from one transformer to multiple transformers

This layout is generated directly from the same logic used in the workspace.

  • At 600 VA load: 1 transformer group with 750 VA total capacity.
  • At 2300 VA load: 3 transformer groups with 2500 VA total capacity.

Change load or voltage and the layout updates automatically.

Load: 600 VA
Control Power Panel example showing one transformer group at 600 VA load
Load: 2300 VA
Control Power Panel example showing multiple transformer groups at 2300 VA load

Increasing load adds transformer groups and scales fuse protection automatically.

Change inputs in the workspace and this result updates automatically.

These changes are reflected directly in structured output data.

Load (VA)Transformer GroupsTotal Transformer VA
6001750
230032500

Geometry and data stay aligned because they are generated from the same logic.

Inputs and outputs

Control load and voltage resolve the transformer selection, fuse sizing, and schematic output together.

Inputs

  • Incoming Voltage
  • Control Voltage
  • Control Load

Resolved Outputs

  • Transformer sizing
  • Fuse sizing
  • Schematic layout

Rule-driven transformer and fuse selection

The sizing logic follows lookup tables and threshold rules encoded directly in the model.

Resolved logic

  • Control load is clamped between 100 and 3000 before transformer selection runs.
  • Transformer VA is selected from standard sizes: 100, 150, 250, 500, 750, and 1000.
  • Additional transformer groups appear automatically when the resolved load exceeds the capacity of one unit.
  • Fuse sizing is selected from lookup tables using both VA and incoming voltage.
  • Component visibility follows the resolved transformer count automatically.

Threshold behavior

The first transformer group covers the first 1000 VA of control load. Additional groups stay inactive until the load crosses the next threshold.

That means the example scales from one transformer group to two and then three without redrawing the schematic. Incoming voltage also changes fuse selection because the lookup table is keyed by both VA and voltage.

Outputs

The resolved panel produces usable engineering data that can be exported and kept aligned with the schematic.

Electrical role, part selection, voltages, transformer VA, and fuse current come from the same resolved logic that drives the layout.

Exported data stays aligned with the evaluated design, so schedules and reporting use the same resolved values.

OutputsExport-ready component data
CSV / JSON
TagComponentRolePart KeyResolved values
TX-1Control TransformerDistributionTX-240-24-100240 to 24, 100 VA
FU-1FuseProtectionFUSE-1A-250250 V, 1 A
HTerminal BlockDistributionTB-300300 V
CTerminal BlockDistributionTBG-600600 V, grounding

Manual control power design versus LogiDraft

Control power design is a recurring task. The same rules that choose components can also keep the schematic and the generated data consistent.

Manual workflow

Recalculate and redraw each variation

  • Size transformers manually from control load.
  • Recheck fuses separately when voltage changes.
  • Redraw the schematic when another transformer group is needed.
  • Maintain BOM data in separate notes or spreadsheets.
LogiDraft workflow

Resolve the system from inputs

  • Transformer sizing follows lookup logic based on clamped load.
  • Fuse sizing follows the correct voltage-aware table.
  • Components appear and disappear from the schematic automatically.
  • Structured outputs stay aligned with the same evaluated model.
Use this example

Use this example

Open in workspace
How this works

How this works

Open the example and change inputs to see the system update

Open this and change one value - you'll immediately see how the system works.

Open this example and:

  • Change control load
  • Watch transformer groups and fuse sizing update automatically
Open in workspaceTry 60-second demoView Examples

Related control panel workflows

This example is part of a larger configurable control panel pattern: inputs resolve sizing logic, schematic geometry, and BOM output together.

Control panel design software

See how control power, motor starters, panel outputs, reusable assemblies, and BOM coordination fit into one workflow.

Read the workflow guide

Electrical schematic software

Learn where LogiDraft fits for repeatable schematic systems driven by inputs, lookup tables, and reusable logic.

Read the schematic guide
Related pages

Docs

How resolved inputs become generated results.

Evaluation