Electrical Equipment Testing Course

Lesson 1 • Principles of Electrical Measurement

Covers fundamental measurement concepts including resistance, voltage, current, and power. Connects measurement theory to practical instrument selection and use.

Lesson 2 • Test Planning and Documentation Basics

Introduces test plan structure, acceptance criteria, and record-keeping requirements. Proper documentation underpins traceability and quality assurance throughout the course.

Lesson 3 • Safety Standards and Regulatory Frameworks

Explains industry safety standards, personal protective equipment requirements, and regulatory compliance concepts. Provides the safety baseline required before any live testing.

Lesson 1 • Categories of Test Instruments

Surveys multimeters, clamp meters, insulation testers, and power analysers. Matching instrument capability to test requirements is the central skill developed here.

Lesson 2 • Instrument Care and Field Handling

Covers storage, transport, lead inspection, and pre-use checks. Proper handling prevents measurement errors and instrument damage in demanding field conditions.

Lesson 3 • Instrument Specifications and Selection

Teaches how to read datasheets, compare specifications, and select instruments for specific test conditions. Builds judgment for field and laboratory environments.

Lesson 1 • Insulation Theory and Degradation Mechanisms

Explains dielectric properties, leakage current paths, and common insulation failure modes. Understanding degradation mechanisms guides correct test voltage and duration selection.

Lesson 2 • Insulation Resistance Test Methods

Covers spot tests, time-resistance methods, polarisation index, and dielectric absorption ratio. Each method targets different insulation conditions and equipment types.

Lesson 3 • Result Interpretation and Trending

Teaches minimum acceptable resistance values, trend analysis, and condition assessment. Trending over time reveals deterioration before catastrophic failure occurs.

Lesson 1 • Continuity Testing Fundamentals

Covers audible and measured continuity checks for conductors, fuses, and protective devices. Establishes the baseline skill for verifying circuit completeness before energisation.

Lesson 2 • Earth Resistance Testing Methods

Explains fall-of-potential, clamp-on, and soil resistivity methods for earthing system evaluation. Proper earthing is essential for fault current dissipation and personnel safety.

Lesson 3 • Bonding and Equipotential Testing

Covers bonding conductor resistance, equipotential zone verification, and structural bonding checks. Equipotential bonding prevents dangerous voltage differences between metallic parts.

Lesson 1 • DC Hipot Test Procedures

Addresses DC hipot advantages, step-voltage protocols, and leakage current interpretation. DC testing is preferred for long cable runs due to lower reactive current demand.

Lesson 2 • Dielectric Strength Theory

Explains electric field stress, breakdown mechanisms, and the relationship between test voltage and equipment rating. Theory informs safe test voltage selection and duration.

Lesson 3 • Very Low Frequency Testing

Introduces VLF test sets, frequency selection, and application to medium-voltage cables. VLF reduces test set size and power demand compared to AC hipot at power frequency.

Lesson 4 • High-Voltage Test Safety Controls

Details exclusion zones, interlock systems, earthing sticks, and emergency shutdown procedures. Strict safety controls are mandatory before any high-voltage test energisation.

Lesson 1 • Fuse and Protective Device Verification

Covers fuse continuity, rating verification, and coordination with upstream devices. Correct fuse selection and condition prevent both nuisance operations and equipment damage.

Lesson 2 • Differential and Distance Relay Testing

Addresses transformer differential, bus differential, and distance relay test methods. These relays protect critical assets and require precise multi-phase injection techniques.

Lesson 3 • End-to-End Protection System Testing

Integrates relay, breaker, and CT/VT testing into a complete protection system verification. End-to-end tests confirm that the entire protection chain operates correctly under fault conditions.

Lesson 4 • Overcurrent Relay Testing

Explains injection testing, time-current characteristic verification, and instantaneous element checks. Relay accuracy ensures correct fault isolation without unnecessary outages.

Lesson 1 • Transformer Winding and Turns Ratio Tests

Covers turns ratio measurement, polarity checks, and winding resistance tests. These tests confirm correct transformer connections and detect shorted or open winding conditions.

Lesson 2 • Motor Performance and Mechanical Tests

Addresses no-load current, vibration analysis, bearing condition, and shaft alignment checks. Mechanical integrity tests complement electrical tests for a complete motor health assessment.

Lesson 3 • Rotating Machine Condition Assessment

Integrates electrical and mechanical test results into a condition rating and maintenance recommendation. Structured assessment supports risk-based maintenance planning for critical machines.

Lesson 4 • Transformer Oil and Insulation Analysis

Explains dissolved gas analysis, moisture content, and dielectric strength testing of transformer oil. Oil condition directly reflects internal insulation health and thermal performance.

Lesson 1 • Integrating Diagnostics into Asset Management

Combines multiple diagnostic results into health indices and risk scores for asset prioritisation. Data-driven decisions optimise maintenance budgets and reduce unplanned outage risk.

Lesson 2 • Infrared Thermography for Electrical Equipment

Explains thermal imaging principles, emissivity settings, and hotspot identification in electrical panels and connections. Thermography detects resistive heating before insulation or contact failure.

Lesson 3 • Partial Discharge Detection and Analysis

Covers PD measurement principles, coupling methods, and pattern recognition for cables and switchgear. PD activity indicates insulation defects before catastrophic failure occurs.

Lesson 4 • Frequency Response and Sweep Analysis

Covers frequency response analysis for transformer winding deformation detection. FRA results reveal mechanical displacement caused by through-fault currents or transport damage.