Amatrol Reduced Voltage Starting Learning System (85-MT5B)

A Student Reference Guide sourced from the system’s interactive eLearning includes the entire series’ technical content from the learning objectives.



  • Allows training in 3-phase Wye-Delta power distribution, as well as reduced voltage starting.


  •  Learning System Available with Regular Banana Leads (85-MT5B) or Sheathed Banana Leads (85-MT5BSL)
Electric Motor Control (85-MT5)

Curriculum Also Available in Spanish

Reduced Voltage Starting Training System | Electric Motor Control Skills

Learning System: 85-MT5B

Amatrol’s Reduced Voltage Starting Learning System (85-MT5B) adds to the Electric Motor Control Learning System (85-MT5) to teach methods of starting electric motors under reduced voltage, 3-phase power distribution using Delta and Wye transformer wiring configurations, and troubleshooting. Reduced voltage starting is ideal for applications where full motor torque could tear or damage a product, such as paper or delicate fabric. Learners will study Wye-Delta power distribution, types of voltage circuits, and the operation of an autotransformer reduced voltage starter.

Reduced voltage starting includes a Dual Transformer Station, featuring two control transformers, and a Power Resistor Station, featuring three 25-ohm, 100-watt resistors. This industrial motor control training system uses industrial-quality components that stand up to frequent use and enables learners to practice with real-world components that they will encounter on the job.

Learning Topics

  • 3-Phase Power Generation & Distribution
  • Wye and Delta Wiring Configurations
  • Installation, Operation, & Design
  • Step-Up/Step-Down Transformers
  • Part Winding Reduced Voltage Starting
  • Autotransformer Reduced Voltage Starting
  • Primary Resistor Reduced Voltage Starting

Practice Real-World Skills on the Dual Transformer and Power Resistor Stations

Amatrol's reduced voltage starting training system includes two panels: the dual transformer station and the power resistor station. Each of these panels is made of 11-gauge steel for durability and easily integrates with the Electric Motor Control Learning System (85-MT5). Learners use these panels to study the operation, installation, performance analysis, and design of components used for reduced voltage motor starting. The power resistor station includes three (3) 25-ohm, 100-watt power resistors. The dual transformer station features two (2) control transformers (250 VA minimum), multiple tap primary (208, 277, 380 VAC), and a single tap secondary (120 VAC).

Build Reduced Voltage Motor Starting Troubleshooting Skills

Troubleshooting is a vital industry skill that will help learners understand malfunctions in normal operation and give them the skills to correct faults as they arise. Amatrol's reduced voltage starting training system allows learners to practice troubleshooting skills for reduced voltage motor starting, such as primary resistor motor starter faults, autotransformer reduced voltage motor starter faults, and part winding motor starter faults.

Interactive Reduced Voltage Starting eLearning Curriculum

Amatrol's reduced voltage starting training system features interactive eLearning curriculum that integrates various types of learning methods to create an engaging, effective learning experience. Amatrol’s multimedia eLearning curriculum includes text with voiceovers, videos, 3D animations, pictures, and interactive activities, quizzes, and self-reviews. Specific reduced voltage starting topics covered include: primary resistor and autotransformer reduced voltage starters; part winding starters; AC power generation; three-phase Wye and Delta power distribution systems; and transformers in power distribution. Within these topics, learners will study objectives like connecting and operating a primary resistor reduced voltage starter; troubleshooting a part winding motor starter; connecting and operating single-phase transformers in a Wye-to-Wye bank configuration; and designing a Delta-to-Wye bank configuration using three single-phase transformers.

Free Learning Management System (LMS)

Amatrol eLearning is easy-to-use for both students and instructors. Its web-based interface is simple to navigate and available on any WebGL-compatible Internet browser. Instructors love Amatrol eLearning for its simple, yet sophisticated Learning Management System (LMS). The LMS allows instructors to create custom courses, monitor student participation, track course progress, assess knowledge levels prior to a course, and test knowledge levels after completion. Learners appreciate the fact that they can start and stop as needed, moving through each Amatrol course at their own pace. If a self-review reveals that they didn’t understand a particular topic as well as they thought they did, they can revisit it before moving on.

Expand Your Electric Motor Control Training | 85-MT5 Expansion Systems

Amatrol's Electric Motor Control Learning System provides a solid foundation to build upon by adding a variety of optional expansion systems to teach additional skills related to

motor braking, reduced voltage starting, VFDs, electronic sensors & counters, and fault troubleshooting. All of these expansion systems include Amatrol's interactive eLearning.