High Voltage Electrician Course

Lesson 1 • Lockout/Tagout Procedures

Details energy isolation methods to prevent accidental energisation during maintenance. Serves as the procedural backbone for all hands-on lab activities.

Lesson 2 • Regulatory Framework for Electrical Work

Surveys occupational safety standards, electrical codes, and employer duty-of-care requirements. Students understand the compliance context governing every task in the course.

Lesson 3 • Personal Protective Equipment Overview

Introduces PPE categories required for electrical work, including insulating gloves, face shields, and arc-rated clothing. Establishes selection criteria used throughout the course.

Lesson 4 • Voltage, Current, and Resistance

Covers Ohm's Law, circuit behaviour, and power calculations. Provides the theoretical base for understanding how high voltage systems operate.

Lesson 1 • Distribution System Components

Covers primary and secondary distribution feeders, transformers, and service connections. Links system architecture to the equipment students will work on directly.

Lesson 2 • High Voltage Cables and Overhead Lines

Compares underground cable construction with overhead conductor systems. Provides the physical knowledge needed for installation and maintenance tasks.

Lesson 3 • System Protection and Coordination

Introduces protective relays, fuses, and reclosers that isolate faults. Students understand how protection schemes affect safe work planning.

Lesson 4 • Generation and Transmission Overview

Describes how power is generated and stepped up for long-distance transmission. Establishes voltage levels and system boundaries referenced in later chapters.

Lesson 1 • Power Transformers and Their Components

Details transformer construction, cooling systems, and nameplate data interpretation. Prepares students to inspect and maintain transformers in subsequent chapters.

Lesson 2 • Capacitor Banks and Reactors

Covers power factor correction equipment, discharge resistors, and series reactors. Students understand residual charge hazards before performing any capacitor work.

Lesson 3 • Disconnect Switches and Isolators

Explains the role of disconnect switches in isolating equipment without load interruption. Connects to lockout procedures and safe switching sequences.

Lesson 4 • Switchgear and Circuit Breakers

Covers air, oil, SF6, and vacuum interruption technologies and their operating mechanisms. Students distinguish breaker types by application and voltage class.

Lesson 1 • Grounding and Bonding for Safety

Covers temporary protective grounding to protect workers from induced and inadvertent energisation. Students apply grounding sets correctly on de-energised lines and equipment.

Lesson 2 • Job Briefings and Pre-Task Planning

Structures the pre-job safety briefing process for high voltage tasks. Students practice leading briefings that cover hazards, controls, and emergency response.

Lesson 3 • Energised Electrical Work Permits

Explains when energised work is justified and how to document hazard analysis. Connects permit requirements to regulatory compliance and risk management.

Lesson 4 • Approach Boundary Concepts

Defines limited, restricted, and prohibited approach boundaries for energised conductors. Students calculate boundaries for common voltage levels encountered in the field.

Lesson 1 • High Potential Testing Methods

Explains DC and AC hipot testing procedures for cables and equipment. Students apply pass/fail criteria and recognise signs of impending insulation failure.

Lesson 2 • Partial Discharge Detection

Introduces partial discharge measurement techniques for cables, switchgear, and transformers. Students identify PD signatures associated with specific defect types.

Lesson 3 • Thermal Imaging and Infrared Surveys

Applies infrared thermography to detect hot spots in connections, switchgear, and overhead lines. Students classify severity and schedule corrective action.

Lesson 4 • Transformer Diagnostic Tests

Covers turns ratio, winding resistance, and dissolved gas analysis for transformer health assessment. Students prioritise maintenance actions based on test findings.

Lesson 1 • Transformer Receiving and Inspection

Covers shipping damage assessment, oil sampling on arrival, and pre-installation checks. Establishes baseline condition data used throughout the transformer's service life.

Lesson 2 • Transformer Installation Procedures

Details foundation requirements, rigging, oil filling, and bushing installation. Students follow a step-by-step sequence that prevents damage and ensures safe energisation.

Lesson 3 • Commissioning and Energisation

Covers pre-energisation tests, phasing verification, and initial energisation procedures. Students apply the commissioning checklist before authorising transformer service.

Lesson 4 • Tap Changer Maintenance

Covers on-load and off-load tap changer inspection, contact wear assessment, and oil change intervals. Students perform a simulated tap changer maintenance procedure.

Lesson 1 • Operating Mechanism Maintenance

Details spring, hydraulic, and pneumatic operating mechanism inspection and lubrication. Students restore mechanisms to correct operating energy levels.

Lesson 2 • Switchgear Inspection Procedures

Covers visual inspection, cleaning, and insulation checks for metal-clad and metal-enclosed switchgear. Students complete a structured inspection form used in field practice.

Lesson 3 • Contact Resistance Measurement

Applies micro-ohmmeter testing to detect high-resistance contacts in breakers and disconnect switches. Students identify when contact replacement is required.

Lesson 4 • Circuit Breaker Timing and Travel Tests

Explains how to measure contact travel, velocity, and open/close timing using a breaker analyser. Students interpret results against manufacturer tolerances.

Lesson 1 • System Restoration Procedures

Explains switching sequences for restoring supply after fault clearance, including sectionalising and back-feed. Students execute restoration plans while maintaining safety boundaries.

Lesson 2 • Fault Types and System Behaviour

Classifies line-to-ground, line-to-line, and three-phase faults and describes system response. Students predict protection operation and affected zones for each fault type.

Lesson 3 • Post-Incident Investigation Methods

Applies root cause analysis to high voltage incidents to identify contributing factors and corrective actions. Students produce a structured incident report with preventive recommendations.

Lesson 4 • Fault Location Techniques

Covers time-domain reflectometry, impedance-based methods, and fault burn-down for cable faults. Students select the appropriate technique based on fault type and cable condition.