Maintenance of Electrical Equipment

Total Hours in Course81

Number of hours for lectures16

Number of hours for laboratory classes16

Independent study hours49

Date of course confirmation16.03.2011

Responsible UnitInstitute of Engineering and Energetics

Course developer

lect.

Imants Plūme

Mg. sc. ing.

Prior knowledge

ETeh2015, Electrical Engineering and Electronics

Course abstract

The aim of the study course is to acquire with the basic concepts of electrical equipment operation, components of the operation process and their interrelationships. rational choice of electrical equipment and optimization of operating modes. Students gain knowledge about the diagnosis of electrical equipment, operation of transformers, switching equipment, electric motors, heating equipment, lighting and other equipment. In the laboratory work students acquire skills to determine the operating parameters of electrical equipment, efficiency indicators, to optimize the operating modes of electrical equipment and the choice of protection devices.

Learning outcomes and their assessment

Knowledge - the causes of electrical equipment damage, the main operating characteristics, electrical equipment diagnostics, maintenance and repair system - laboratory works, 1st, 2nd tests.
Skills - determine the causes of damage to electric drives, transformers, electric motors, heating equipment and lighting equipment, operating modes, perform damage diagnosis and calculate the parameters of protection devices - laboratory works, 3rd test.

Competence - selection of electrical equipment operation systems, operating modes and protection devices, measures for maintenance of electrical equipment and reduction of electricity losses, assessment of the electrical service - home work, exam

Course Content(Calendar)

Full time intramural studies:
1. Objectives, tasks, operating characteristics of electrical equipment - safety, durability. (Lecture - 1 h).
2. Operating conditions, reasons for failures and their effect on electrical equipment. (Lecture - 1 h).
3. Basic principles and selection of diagnostic, maintenance and repair systems. (Lecture - 1 h).
4. Operation of overhead lines and cable lines, periodicity, standard works. (Lecture - 1 h).
5. Operation of distribution points and transformers, periodicity, standard works - Test 1. (Lecture - 2 h)
6. Laboratory works. Determination of cable, transformer and contactor parameters (Laboratory works - 6 h)
7. Operation of lighting devices, periodicity, standard works. (Lecture - 1 h).
8. Operation of heating devices, periodicity, standard works. Test 2. (Lecture - 2 h).
9. Types of electric motor connections, operation in starting and operating modes. (Lecture - 1 h).
10. Operation of alternative electricity sources. (Lecture - 1 h).
11. Laboratory works. Diagnosis of end consumer electrical equipment, electrical measurements. (Laboratory work - 6 h).
12. Operation of electrical equipment control and protection equipment. (Lecture - 1 h).
13. Peculiarities of operation of electrical equipment in agriculture. (Lecture - 1 h).
14. Methods for rational use of electricity in the operation of electrical equipment - Test 3. (Lecture - 2 h).
15. Laboratory works. Reduction of losses and improvement of power factor. (Laboratory works - 4 h).
16. Structure, organization and management methods of the company's electrical service. 1. home work. (Lecture - 1 h).
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

Must have performed and credited all the laboratory works, the independent work and passed all the tests.

Description of the organization and tasks of students’ independent work

1. Develops home work
2. Prepares for tests and defends laboratory works.

Students are guided by lecture materials, instructions for home work, laboratory work and additional literature sources.

Criteria for Evaluating Learning Outcomes

The assessment of the study course exam
consists of the sum of the obtained points: - correct, complete answer: 3 points, - correct answer with minor imperfections / errors: 2 points, - answer that contains correct basic concepts, but without explanations or contains significant errors: 1 point, - the answer is incorrect, there are serious errors: 0 points. Obtaining 9 points, it is possible to conduct interviews, as a result of which, showing the appropriate knowledge and understanding, the student can receive 10 points (excellent assessment).
If the average cumulative mark of tests, home work and laboratory works is not less than 7 points, then this mark can be used as an examination mark.
The average cumulative mark is obtained by summing the evaluations of tests (max. 30%), home work (max. 30%) and laboratory works (max. 40%),

Compulsory reading

1. Baltiņš A, Kanbergs A. S.Miesniece. Zemsprieguma elektriskie aparāti. Māc. līdz.:Rīga: Jumava, 2003. 331 lpp.
2. Plūme I. Elektroiekārtu ekspluatācija un remonts: Mācību līdzeklis. Jelgava: LLU, 2008. 59 lpp.
3. Grunte U, Makreckis O, Zacmanis V. Lietotāju un speciālo elektroietaišu ekspluatācija, Mācību palīglīdzeklis, R. 2012.,106. lpp.

4. Пястолов А.А, Ерошенко Г.П. Эксплуатация электрооборудования. Москва.: Колос, 1990. 283 с.

Periodicals and other sources

1. Žurnāls Enerģija un pasaule, Izd.: VAS LATENERGO un Latvijas Elektroenerģētiķu biedrība. ISSN: 1407-5911, www.energijaunpasaule.lv

2. Electricity Journal, Elsevier science, ISSN 1040-6190.

Notes

Compulsory course in the professional bachelor's program "Applied Energy Engineering"

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