Electromechanical Technician Course

Lesson 1 • Basic Electrical Concepts and Units

Covers voltage, current, resistance, and power with SI units. Establishes the electrical vocabulary used throughout all subsequent chapters.

Lesson 2 • Electromechanical Component Overview

Surveys relays, solenoids, switches, and sensors as building blocks of electromechanical systems. Links component function to system-level behavior.

Lesson 3 • Safety Standards and Work Practices

Establishes electrical safety rules, lockout/tagout procedures, and PPE requirements. Safe work habits are reinforced as non-negotiable throughout the course.

Lesson 4 • Fundamental Mechanical Principles

Introduces force, torque, motion, and mechanical advantage. Connects mechanical quantities to their electrical equivalents in energy conversion.

Lesson 1 • Electrical Distribution and Protection

Covers panelboards, circuit breakers, fuses, and grounding in industrial distribution. Ensures students can safely navigate and assess power distribution systems.

Lesson 2 • AC Waveform Characteristics

Defines frequency, amplitude, period, and phase angle of sinusoidal waveforms. Builds the AC vocabulary needed for motor and transformer analysis.

Lesson 3 • Three-Phase Power Systems

Analyzes wye and delta configurations for three-phase voltage and current. Establishes the three-phase knowledge required for industrial motor and distribution work.

Lesson 4 • Capacitance and Inductance in AC Circuits

Explains capacitive and inductive reactance and their effect on current flow. Prepares students to analyze reactive loads in motor and transformer circuits.

Lesson 1 • Measurement Accuracy and Documentation

Addresses calibration, measurement uncertainty, and proper data recording practices. Accurate documentation supports trend analysis and maintenance decision-making.

Lesson 2 • Insulation and Ground Resistance Testing

Applies megohmmeter and earth ground tester procedures to motor and cable testing. Identifies insulation degradation before catastrophic failure occurs.

Lesson 3 • Digital Multimeter Operation

Covers voltage, current, resistance, and continuity measurement with a DMM. Accurate meter use is the primary diagnostic skill applied in all later chapters.

Lesson 4 • Oscilloscope Fundamentals

Teaches time-domain waveform capture, triggering, and measurement cursors. Oscilloscope skills enable diagnosis of signal integrity and timing faults.

Lesson 1 • DC Motors and Brushless DC Motors

Analyzes series, shunt, and compound DC motor characteristics alongside brushless DC designs. Covers speed-torque relationships critical for variable-speed applications.

Lesson 2 • Three-Phase Induction Motors

Details squirrel-cage and wound-rotor induction motor construction and slip characteristics. Induction motors are the most common industrial drive and form the course's primary focus.

Lesson 3 • Motor Nameplate and Selection Criteria

Interprets NEMA and IEC nameplate data including frame, enclosure, duty cycle, and service factor. Correct motor selection prevents premature failure and energy waste.

Lesson 4 • Single-Phase AC Motors

Covers split-phase, capacitor-start, and shaded-pole motor designs and starting methods. Prepares students to service motors found in HVAC, pumps, and light machinery.

Lesson 1 • Reduced-Voltage Starting Methods

Compares star-delta, autotransformer, and soft-starter reduced-voltage techniques. Reduces mechanical shock and inrush current during large motor starting.

Lesson 2 • Magnetic Contactors and Overload Relays

Explains contactor construction, arc suppression, and thermal overload relay operation. These devices form the core of every electromechanical motor starter assembly.

Lesson 3 • Control Transformers and Pilot Devices

Covers control transformer sizing, pushbuttons, selector switches, and indicator lights. Pilot devices provide the human-machine interface for manual motor control.

Lesson 4 • Full-Voltage and Reversing Starters

Wires across-the-line and reversing starter circuits with interlocking logic. Students commission and test starters while verifying correct phase rotation.

Lesson 1 • Drive Parameter Configuration

Programs motor nameplate data, acceleration/deceleration ramps, and frequency limits into a VFD. Correct parameter entry ensures safe and efficient motor operation.

Lesson 2 • Speed Reference and Control Signals

Configures analog, digital, and serial speed reference inputs for process integration. Links drive control to sensors and PLCs used in automated production systems.

Lesson 3 • VFD Operating Principles

Explains rectifier, DC bus, and inverter stages of a VFD and PWM output generation. Understanding internal stages is essential for diagnosing drive faults accurately.

Lesson 4 • VFD Installation and Wiring

Covers input line reactors, output filters, cable shielding, and grounding for VFD installations. Proper installation prevents EMI interference and premature drive failure.

Lesson 1 • Belt, Chain, and Sprocket Drives

Explains V-belt, synchronous belt, and roller chain drive selection and tensioning. Proper tensioning prevents slippage, premature wear, and bearing overload.

Lesson 2 • Couplings and Flexible Connectors

Compares rigid, jaw, disc, and fluid couplings for torque transmission and misalignment tolerance. Coupling selection directly affects vibration levels and bearing life.

Lesson 3 • Gears, Gear Trains, and Gearboxes

Covers spur, helical, bevel, and worm gear geometry and gear ratio calculations. Gear knowledge enables correct gearbox selection and output speed/torque prediction.

Lesson 4 • Bearings, Seals, and Lubrication

Identifies ball, roller, and sleeve bearing types and applies correct lubrication practices. Proper bearing maintenance is the single largest factor in rotating equipment reliability.

Lesson 1 • Thermography and Oil Analysis

Uses infrared thermography and lubricant analysis to detect hidden faults. Non-invasive techniques extend inspection capability without equipment shutdown.

Lesson 2 • Systematic Troubleshooting Methodology

Introduces a structured fault-isolation process: observe, define, locate, repair, verify. A repeatable method reduces diagnostic time and prevents misdiagnosis.

Lesson 3 • Motor and Drive Fault Diagnosis

Diagnoses winding faults, bearing noise, overheating, and drive trip conditions. Combines electrical measurement and mechanical inspection for complete motor assessment.

Lesson 4 • Maintenance Planning and Work Orders

Creates preventive and predictive maintenance schedules and documents work orders accurately. Structured maintenance records support reliability improvement and regulatory compliance.