TÈCNIQUES AVANÇADES PER AL MANTENIMENT PREDICTIU DE MOTORS ELÈCTRICS

DAY 1
1. INTRODUCTION
1.1. Generalities of electric motors.
1.2. Typologies and constructive aspects.
1.3. Most usual faults.
1.4. Diagnosis techniques.

2. CURRENT ANALYSIS: MCSA
2. 1. Introduction to current analysis.
2.2. Basic variants (MCSA vs. ATCSA).
2.3. Measurement point and necessary equipment.
2.4. Classical analysis of the current at steady-state (MCSA).
2.4.1. Rough analysis of the motor current.
2.4.2. Harmonics in healthy condition.
2.4.3. Requirements for a high quality spectrum.
2.4.4. Harmonics introduced by rotor faults: examples.
2.4.5. Harmonics introduced by eccentricities: examples.
2.4.6. Harmonics introduced by bearing faults: examples.
2.5. Problems of the classical method (MCSA).
2.6. Exercises and laboratory tests.

DAY 2
3. NEW TECHNIQUES BASED ON TRANSIENT CURRENT ANALYSIS: ATCSA
3. 1. Introduction to transient analysis.
3.2. Measurement point and necessary equipment.
3.3. New transient based techniques (ATCSA).
3.3.1. Rough analysis of the startup current.
3.3.2. Advanced analysis of the startup current: introduction
3.3.3. Advanced analysis of the startup current: requirements
3.3.4. Advanced analysis of the startup current: available tools.
3.3.5. Operation of discrete and continuous transforms: Exercises and practical examples.
3.3.6. Advanced analysis of the startup current: results and examples.
3.3.7. Extrapolation to other transients and machines
3.4. Exercises and laboratory tests.

DAY 3
4. MONITORING THE INSULATION DEGRADATION VIA PARTIAL DISCHARGES
4.1. The insulation system in electric motors.
4.2. Faults in the insulation system.
4.3. Partial discharges: foundations.
4.4. Partial discharges: tests.
4.5. Partial discharges: interpretation of the results.
4.6. Partial discharges: periodicity.
4.7 Partial discharges: other technologies and devices

5. OFF-LINE ELECTRIC MOTOR TESTING
5.1. Ohmic resistance test, IEEE 118-1978
5.2. Insulation resistance test, IEEE 43-2000 (IEEE 43-2013)
5.3. Polarization index (PI)/Dielectric absortion (DA), IEEE 43-2000 (IEEE 43-2013)
5.4. Standard capacitive test
5.5. HiPot (Step Voltage), IEEE 95-1977
5.6. Surge test, IEEE 522-1992
5.7. Rotor Influence Test- RIC
5.8. Inductance measurement
5.9. Single phase rotation test, EASA 2003
5.10. Core ring test.

6. OTHER ASPECTS WITH INFLUENCE ON ELECTRIC MOTOR MAINTENANCE
6.1. Interpretation motor plate and characteristics sheet.
6.2. Technological aspects of motor starting.
6.3. Reactive power compensation aspects.
6.4. Commissioning.