Coiltech 2026 · Stand C29

Autotransformer Design

Autotransformer Software

The definitive software for automatic design of low voltage autotransformers. No pre-calculations — enter your customer's data directly.

Single-Phase AutotransformersThree-Phase Autotransformers

Autotransformer Calculation

Our software offers an advanced calculation engine for precise sizing of single-phase and three-phase autotransformers, optimizing costs and performance.

Single-Phase Autotransformers

Dedicated algorithms for single-phase autotransformers on two limbs, with automatic sizing.

  • Series or parallel coil connection
  • No pre-calculation required from the designer
  • Automatic selection of optimized construction data

Three-Phase Autotransformers

Complete solutions for three-phase autotransformers with automatic sizing.

  • Yy or Yyn vector groups
  • No pre-calculation required from the designer
  • Accurate short-circuit voltage calculation
Benefits

Why choose our calculation engine?

Not just a simple calculator, but a complete engineering suite.

Certified Precision

Algorithms validated on thousands of manufactured autotransformers.

Execution Speed

Go from specs to executive design in less than 5 minutes.

Cost Optimization

Cut material consumption by up to 15% through the optimization opportunities built into our applications.

Production Export

Automatically generate PDF, and BOMs ready for use.

Process

From concept to production

  1. 01

    Input rating data

  2. 02

    Engine calculates and optimizes

  3. 03

    Analyze thermal results

  4. 04

    Export construction files

Windings and assembly

Scaled drawing of the coil and output bars

All technical and dimensional data translated into factory-ready documents.

WindingCU AL 200 × 0.4
80 mm²
Assembly
409/210 V50 Hzclass HIP00
Advanced

Advanced Technical Specifications

Everything you need for complex projects.

Short-circuit voltage calculation based on actual flux
Overtemperature calculation that splits the component into small sections, accounting for heat conduction between individual parts.
Core loss calculation with proven building factors
Ability to design fully custom, non-standard components
CurrentsThree-phase tap current split
common winding 166.7 Acurrents from actual calculation
Automatic generation of construction drawings

Mechanical Design

The software automatically generates drawings of the autotransformer, including carpentry, insulators, and connections. Export for your mechanical CAD.

Total control over margins

Cost Analysis & Quoting

Instant calculation of material costs based on updated market prices. Margin analysis and automatic generation of commercial offers.

Optimize stock

Smart Inventory Management

Direct integration with material inventory. The software suggests using leftovers and optimizes lamination cutting to reduce scrap.

Total connection

Industry 4.0 & ERP

Connect the software to your ERP for sending BOMs and to winding machines for automatic transmission of production parameters.

Pricing

Simple and transparent plans

Choose the solution that best fits your design needs.

Start

Perfect for SMEs and consulting firms.

400€/mese

Billed annually

  • Access to the full software suite
  • Local installation
  • Up to 3 concurrent users
  • Email support
  • Documentation
  • Video course
  • Integrated inductance transformers
  • Tri-monophase transformers
Try now
Lifetime license

Pro

Fully customizable.

Contact us
  • Everything in Start
  • Integrated inductance transformers
  • Tri-monophase transformers
  • Private server installation
  • Complete bill of materials
  • Mechanical drawings
  • ERP integration
  • Custom modules
  • Direct support
Request quote

Team

Built to scale with large teams.

Custom
  • Everything in Pro
  • PLM integration
  • Priority support
  • Full customization
  • Team training
Request a quote

Start today

Start designing today

Stop wasting time with obsolete spreadsheets.