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IEC 60034-12 / IEC 60947-4

Motor Starting Methods Comparison Chart Poster

Free download · A3 landscape (420 × 297mm)

Choosing the right motor starting method depends on starting current limits, torque requirements, and budget. This A3 poster presents a side-by-side comparison matrix of five starting methods: DOL (Direct On Line), Star-Delta, Autotransformer, Soft-Starter, and VFD (Variable Frequency Drive). For each method, the poster shows starting current as percentage of FLA, starting torque as percentage of rated torque, cost band, complexity rating, and typical applications. An inrush current formula per method and a torque-speed curve overlay illustration complete the picture. Extremely shareable in engineering communities and training environments.

What's Included

Front:5-method comparison matrix: DOL, Star-Delta, Autotransformer, Soft-Starter, VFD. Starting current, torque, cost, applications. Torque-speed curve overlay.
Back:Single-sided A3 poster — no back content.
Size:A3 landscape (420 × 297mm)
Format:PDF, print-ready

How to Print

  • Print on A3 (297 × 420mm) or tabloid (11 × 17")
  • Color printing required for comparison highlights
  • Use a professional print shop for best results
  • Frame or laminate for long-term office display

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Need precise calculations beyond quick reference? Try our free online calculator with full clause references and professional report output.

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Frequently Asked Questions

What paper should I print this on?

Print on A3 paper in color (minimum 100gsm). The torque-speed curves require colour differentiation. Laminate for workshop display.

Can I distribute this to my team?

Yes. Excellent for training rooms, workshops, and MCC assembly areas. All ECalPro posters are free to print and distribute.

What standard does this reference?

Motor characteristics per IEC 60034-12 (starting performance). Starter ratings per IEC 60947-4 (contactors and motor starters).

How often is this updated?

Updated when motor or starter standards are revised. Starting method fundamentals are well-established.