Università Roma Tre

• Units and Standards of Electrical Measurements
1. Systems and units of measurement
2. Conservation and dissemination of electrical units
3. Standards for direct current
4. Samples of Capacity
5. Other Samples for Alternating Current
6. Primary electrical metrology

• Instrumentation
1. Electromechanical Instruments (Operating Principles, Construction Criteria, The Motion of the Instruments, Main Indicator Instruments, Zero Detectors, Special Instruments)
2. Electronic Instruments (Measurement Amplifiers, Analogue Electronic Instrumentation, Analogue-Digital Conversion, Numerical and Digital Instrumentation, Sampling Instrumentation)
3. Transducers
4. Divisors and derivatives
5. Measurement Transformers
6. Special Elements and Converters (Amperometric clamps, Hall effect converters, Rogowsky coil)
7. Practical Examples of Instrumentation (Analog and Digital Voltmeters, Analog and Digital Ammeters, Analog and Digital Wattmeters, Multimeters, Current Clamps, Digital Oscilloscopes, other support instruments present in the laboratory useful for laboratory experiences).

• Measurements on Circuits
1. Measurements on Direct Current Circuits (Current Measurements, Voltage Measurements, Power Measurements)
2. Measurements on single-phase AC circuits in low power and low frequency (Current Measurements, Voltage Measurements, Power Measurements, Impedance Measurements and Impedance meter)
3. Power measurements on single-phase alternating current circuits
4. General principles of measurements on three-phase circuits (measurements on three-phase three-wire systems, active power measurements on three-phase circuits, reactive power measurements, power factor measurements)
5. Energy measurements
6. Measurement Methods (Zero Methods, DC Bridge Methods, AC Bridge Methods, Potentiometric Methods)

• The quality of electricity (Power Quality)

• Specific problems of electrical systems
1. Sensors (velocimeters, accelerometers, vibration measurements, thermocouples, various temperature sensors, thermography, echometers for detecting faults on power lines, sensors for monitoring emissions)
2. Earth resistance measurements, electrical insulation measurements


• Laboratory Experiences (Theory and Practice)
A) Verification of Ohm's law
B) High Accuracy Continuous Measurements with Continuous Potentiometer
C) Volt-Amperometric method
D) Power measurement with the Volt-Amperometric method
E) Measurement of an impedance with the industrial method
F) Impedance measurement with the low frequency bridge method
G) Measurement of the characteristics of the filters
H) Earth resistance measurement

SLIDES PROVIDED BY THE PROFESSOR AND MULTIMEDIA VIDEO