Course code ETeh2005

Credit points 2

Electrical Measurement

Total Hours in Course80

Number of hours for lectures16

Number of hours for laboratory classes16

Independent study hours48

Date of course confirmation06.01.2015

Responsible UnitInstitute of Energetics

Course developer

author lect.

Aleksejs Gedzurs


Prior knowledge

ETeh2019, Applied Electrical Engineering

Course abstract

The aim of the study course is to know general conception of metrology; base of errors theory; metrological motivation of choosing apparatus of measurement; electrical apparatus of measurement and informative systems; measurement of electrical current; transducers of nonelectrical parameters; measurement of nonelectrical parameters.

Learning outcomes and their assessment

Knowledge - about characteristics and performance of the electric meters and measuring transducers design, measurement of electrical parameters – test.
Skills - to perform analysis and inspection of electric meters, recognizing standard circuits for measuring, performing electric measurements, technical calculations on circuits – laboratory classes.

Competence - to choose technical characteristics of electric meters and standard electric connections for measurement of circuit parameters – laboratory classes and home work.

Course Content(Calendar)

Full time intramural studies:
1. Technical equipment of laboratories and electrical safety regulations. (Lecture - 1h)
2. Current and voltage measurement. (Lecture - 1h)
3. Three-phase active power measurement. (Lecture - 1h)
4. Measurement of three-phase reactive power. (Lecture - 1h)
5. Measurement of active and reactive energy and electrical frequency. (Lecture - 2h)
6. Power factor measurement. (Lecture - 1h)
7. Measurement of electrical resistance. (Lecture - 1h)
8. Insulation and earth resistance measurement. (Lecture - 1h)
9. Measurement of electrical parameters with Hall sensors. - (Lecture - 2h)
10. Determining the sequence of phases. (Lecture - 1h)
11. Basic principles of electrical measurement of non-electrical quantities. (Lecture - 1h)
12. Classification, structure, operating principles and parameters of transducers. (Lecture - 1h)
13. Temperature measurement. (Lecture - 2h)

Laboratory works:
Three-phase reactive power measurement - 2h,
Complex electrical measurements with Hall sensors. Measurement data processing and measurement noise filtering. - 6h;
Power factor measurement. - 2h;
Determination of phase sequence. - 1h;
Temperature measurement. - 1h;
Electrical resistance measurement. - 2h;
Three-phase active power measurement - 2h.
Part time extramural studies:

All topics specified for full time studies are accomplished, but the number of contact hours is one half of the number specified in the calendar

Requirements for awarding credit points

Written exam. Exam consist of:
1. test type questions about theoretical course part;
2. practical task about laboratory classes and home work.

Test and home works must be credited and laboratory classes must be defended.

Description of the organization and tasks of students’ independent work

Home work. Three tasks will be given about meter precision and it’s choice.
During the semester home work needs to be completed and defended.

Criteria for Evaluating Learning Outcomes

Exam assessment consist of exam tasks, test, homework and laboratory work cumulative assessment.

Exam theoretical and practical tasks can be skipped, if test assessment is at least 6 and laboratory and home works are defended during the semester time. Exam assessment consist of test (60%), laboratory (30%) and home work (10%) parts.

Compulsory reading

1. Klegeris I. Ž. Lietišķā elektrotehnika: Mācību grāmata. Jelgava: LLU, 2007. 78 lpp. Elektronisks resurss:ācību grāmatas
2. Lagzdiņš Ģ. E. Pamatkurss elektrotehnikā. Rīga: Jumava, 2004. 217 lpp.
3. Tumanski S. Principles of electrical measurement. Tailor&Francis, 2006. 488 p.

4. Kaķītis A. Neelektrisku lielumu elektriskā mērīšana un sensori. Mācību līdzeklis. Jelgava: LLU, 2008. 67 lpp. Elektronisks resurss:ācību grāmatas.

Further reading

1. Klegeris I. Ž. Elektrisko lielumu mērīšana. Lekciju konspekts. Jelgava: LLU, 2008. 41 lpp. Elektronisks resurss:ācību grāmatas.


Compulsory course for professional bachelor study program Applied Energy Engineering