BECOME A TRANSFORMER TESTER [A NIGHT STUDY]

Manalich introduces his journey from electrical engineer to ISO 9001:2015 lead auditor, detailing qualifications and power distribution experience, while launching collaborative lab tests and discussions on transformer parts and uses.

Explore the key parts of transformers, including nameplate data, primary and secondary windings, cooling oil and radiators, bushings, taps, and safety features, and understand how losses and ratings guide testing.

Perform insulation resistance testing on transformers by applying dc, measuring leakage current, and calculating resistance with ohm's law to assess dielectric strength between windings and the transformer body.

Learn how to perform insulation resistance testing on a 315 kVA transformer, including setting up test leads, safe discharge, and measuring leakage between primary and secondary windings and earth.

Learn how the high voltage dielectric withstand test checks a transformer’s insulation by applying a sinusoidal voltage beyond rating to ensure no breakdown under surge conditions.

Perform a dielectric high voltage withstand test on a 315 kVA transformer to assess insulation strength, applying rated stress for 60 seconds and monitoring leakage before safe discharge.

Learn how to calculate winding resistance test values and assess transformer health. Compare measured resistance with supplier values and note temperature effects on readings.

Perform a winding resistance test on a 315kVA transformer by injecting current, applying Ohm's law to measure winding resistance, and verifying LV winding connections and readings.

Understand core losses and how to measure them with the open circuit test. Identify eddy current and hysteresis losses and verify no-load losses against supplier claims.

Perform the open circuit test on a 315 kVA transformer to assess iron losses, hysteresis losses, and core losses under no-load conditions, with windings disconnected and safety steps followed.

Analyze short circuit tests to determine transformer copper losses by measuring winding losses as current increases, distinguishing them from open-circuit tests and using rated voltage to reveal copper loss data.

Perform a short circuit test on a 315kVA transformer to measure copper losses and other losses under varying loading and winding conditions, with careful connections and safety checks.

Explore the breakdown voltage test for transformer oil, measuring dielectric strength and insulation integrity by applying voltage between electrodes, averaging multiple readings to determine the breakdown point.

Perform a breakdown voltage test on transformer oil using a testing kit, with a 2.5 mm electrode gap and a voltage ramp, keeping the sample between electrodes and recording readings.

Perform the acidity test to determine the acid number of transformer oil by neutralizing acids with a base and using a universal indicator to read the color chart.

Learn to perform an acidity test on transformer oil, measure acid content, and determine the neutralisation number using sodium carbonate and an indicator with color matching on the chart.

Explore the magnetic balance test for transformers, an indicator method that injects voltage, measures induced voltages across windings, and helps identify potential turn-to-turn faults, with other tests.

Explore tan delta testing for transformer insulation health by analyzing leakage and capacitive currents, phase angles, and how a low tan delta signals healthy insulation.