• ETT Level 3.7: General Test Equipment

    Learn how to perform and interpret insulation tests, thermographic surveys, ratio tests, and power factor tests.

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    1. Insulation tests - Perform, interpret, and evaluate insulation tests including resistance, dielectric absorption, polarization index, tip-up, and applied voltage withstand.
    2. Thermographic survey - Have the ability to perform, interpret, and evaluate a thermographic survey on electrical distribution systems. Interpret results in order to evaluate the condition of the equipment surveyed.
    3. Ratio and relative polarity - Correctly apply voltage or current to one set of windings and measure the output of associated windings to determine ratio, polarity, and/or phase relationship. Evaluate test results.
    4. Power-factor/dissipation-factor testing - Perform, interpret, and evaluate standard insulation power-factor/dissipation-factor tests on electrical power equipment, including transformers, breakers, cables, bushings, rotating equipment, and insulating liquids.

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