Electrical/Practical course
Motor insulation diagnosis training

For preventing electrical accidents, diagnosis is required even for motor that looks strong.
丂丒To understand methods of insulation diagnosis test for assessing remaining life of motor.
丂丒To know how dielectric breakdown accidents take place in motor.
丂丒To learn in an easy-to-understand way the methods and principles of insulation diagnosis.
丂丒To understand methodology and assessment philosophy of insulation diagnosis through practical insulation diagnosis testing.
丂丒To become capable of assessing remaining life of motor based on diagnosis results.
Study types of insulation aging and diagnosing techniques. Practical training on insulation diagnosis Insulation diagnosis equipment

Able to do insulation diagnosis test and assess results.
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Curriculum
Schedule Subjects Contents
1st day Causes of insulation aging Learn about structures of motor insulation systems, insulation classes, causes of insulation aging, and types of aging.
Methodology of insulation diagnosis testing Learn about testing methods and principles as well as assessment methods of DC absorption test, dielectric loss tangent test, AC voltage/current test, and partial discharge test.
Insulation diagnosis testing亂Practical training亃 Conduct DC absorption test of 3.3kV motor to promote understanding of testing methodology and acquire expertise of safety and quality management for testing.
2nd day Insulation diagnosis testing亂Practical training亃 Conduct dielectric loss tangent test, AC voltage/current test and partial discharge test of 3.3kV motor to promote understanding of testing methodology and acquire expertise of safety and quality management for testing.
Technologies for assessing insulation testing results Learn about assessment technologies, technologies for analyzing deteriorated parts, conceptions of remaining life diagnosis through analyzing practical testing data.
Preventive maintenance Learn about technologies and methods of preventive maintenance for motor.


Training aids
Tools Specifications
Insulation diagnosis testing equipment Mitsubishi Cable Industries, Ltd.
MODEL1000-90I0031
Motors to be tested Mitsubishi Electric Corp., 3.3kV-800kW-2P
Insulation class: B Class

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