Low Voltage Electrical Systems

Code:

L.EEC028

Acronym:

SEBT

Keywords
Classification	Keyword
OFICIAL	Power

Instance: 2022/2023 - 2S

Active?	Yes
Web Page:	http://www.fe.up.pt/~jns
Responsible unit:	Department of Electrical and Computer Engineering
Course/CS Responsible:	Bachelor in Electrical and Computer Engineering

Cycles of Study/Courses

Acronym	No. of Students	Study Plan	Curricular Years	Credits UCN	Credits ECTS	Contact hours	Total Time
L.EEC	177	Syllabus	3	-	6	52

Teaching language

Portuguese

Objectives

The students should be able to:

• Demonstrate basic knowledge about electricity systems of LV and MV
• Perform short-circuit calculations following the Thévenin model
• Describe the characteristics and operating principles of switching apparatus and protection devices for LV and MV use
• Interpret and reproduce electrical diagrams of basic LV installations and secondary stations
• Know and apply safety rules for persons’ protection
• Design basic electric installations
• Analyze the economic and technical aspects associated to LV generation

Learning outcomes and competences

•To give the students a general survey on the electrical sector in Portugal.

•To present some equipment used in medium voltage facilities and, mainly, in low voltage installations considering the technological and functional characteristics. 

•To present the students the method of dimensioning electrical cables and their protections.

•To inform the students about the requirements of electrical projects concerning residential buildings.

Working method

Presencial

Pre-requirements (prior knowledge) and co-requirements (common knowledge)

The frequency of this unit requires knowledge taught in UCs Circuitos and Sistemas Elétricos de Energia. It is the student's responsibility to ensure mastery of the topics addressed these UCs

Program

Typical structure and constitution of low voltage distribution networks, industrial networks, building
installations, panels and utilization installations. Switching, protection and control devices at LV and MV.
Short-circuit simplified calculations based on the Thévenin model. Design and protection of electrical
wiring. People protection in electrical facilities. Surge protection. Load factor compensation. Basic notions
of Home Energy Management Systems (HEMS) and aspects related to electricity generation at low voltage.
Settlement and measurement of earthing networks.

Mandatory literature

J. Eduardo Neves dos Santos e Outros; CÓPIAS DE TRANSPARÊNCIAS e SLIDES (Aulas Teóricas)
J. Eduardo Neves dos Santos; TEXTOS DIDÁTICOS VÁRIOS
J. Neves dos Santos; Condutores e Cabos de Energia, 2005
J. Neves dos Santos; Instalações Colectivas de Edifícios, 2005
J. Neves dos Santos, J. Rui Ferreira; Redes de Distribuição de Energia Eléctrica em Baixa Tensão, 2004
J. Neves dos Santos; Instalações Eléctricas: Um Mandamento e Muitas Questões, 2004 (Revisto em 2006)
RTIEBT- Regras Técnicas das Instalações Eléctricas de Baixa Tensão, 1ª Edição Anotada, Certiel / DGGE, 2006
Regras Técnicas das Instalações Eléctricas de baixa Tensão, Imprensa Nacional-Casa da Moeda, 2006. ISBN: 972-27-1518-6
Hilário Dias Nogueira; ABC das regras técnicas. ISBN: 978-972-8953-83-6
Constantino Vital Sopa Soares; Instalações Eléctricas de Baixa Tensão - Projecto, Execução e Exploração: Origem e Interpretação das RTIEBT e Principais Diferenças Face ao 740/74, DGEG / Certiel, 2006. ISBN: 978-972-95180-6-5
Manual de Ligações à Rede Eléctrica de Serviço Público - Guia Técnico e Logístico de Boas Práticas, EDP Distribuição, 2011
Vários; Application Guide: Industrial Switching & Protection Systems, SOCOMEC (Innovative Power Solutions), 2011
Vários; Electrical Installation Guide 2010, Schneider Electric, 2010. ISBN: 978.2.9531643.3.6
Hilário Dias Nogueira e Josué Lima Morais; Tabelas Técnicas das Instalações Eléctricas (segundo as Regras Técnicas RTIEBT), Certiel, 2008. ISBN: 978-972-95180-7-2
Morais, Josué Lima; Guia técnico das instalações eléctricas. ISBN: 972-95180-3-3
L.M. Vilela Pinto; HabitatPro. Técnica e Certificação das Instalações Eléctricas, Schneider Electric, 2006. ISBN: 989-95174-0-2
L. M. Vilela Pinto; Colectiv Pro: Técnica e Certificação das Instalações Eléctricas, Schneider Electric Portugal, 2007. ISBN: 978-989-95174-2-4
Pinto, L. M. Vilela; Técnicas e tecnologias em instalações eléctricas. ISBN: 972-95180-1-7
Pinto, Luís Manuel Vilela; MGCALC. ISBN: 972-95831-1-0 (vol.1)
Pinto, Luís Manuel Vilela; Manual MGCALC. ISBN: 972-95831-0-2

Complementary Bibliography

Guilherme de Almeida; Sistema Internacional de Unidades (SI) - Grandezas e Unidades Físicas: Terminologia, Símbolos e Recomendações, Plátano Edições Técnicas, 2002. ISBN: 972-707-162-7
Regulamentos de Segurança Diversos (Instalações Eléctricas), DGGE
Guias Técnicos Diversos, DGGE
Vários; Electrical Installations Handbook. Vol 1 Protection and Control Devices, 2nd Edition, ABB SACE, 2004
Vários; Electrical Installations Handbook. Vol 2 Electrical Devices, 2nd Edition, ABB SACE, 2004
Vários; Electrical Installations Handbook,Third Edition, John Wiley & Sons, 2000. ISBN: 0-471-49435-6
Distribution et Puissance jusqu´ à 4000A: Guide Technique, Legrand
Soluções de Electricidade: Conforto, Segurança e Eficácia, EDP, 2000
Guia Técnico, 9ª Edição, SOLIDAL, 2005
Manual da Qualidade da Energia Eléctrica, EDP, 2005
Enrico Grassani; Verificação das Instalações e dos Equipamentos Eléctricos, 2ª edição, Editoriale Delfino, 2001. ISBN: 88-7933-237-6
Pulo Liberato e Carolina Monteiro; A Electricidade e a Saúde. Os Campos Electromagnéticos de Frequência Reduzida, Edição REN, 2008
Chauffournier, Bernard 710; Esquemateca. ISBN: 2-907314-21-1
Dossier ITED, ACIST-AET, 2006. ISBN: 972-99997-0-8
Dossier ITED, O Essencial, ACIST-AET, 2006. ISBN: 972-99997-1-6
Manuel António Matos; I ntrodução ao Cálculo de Curto-Circuitos Trifásicos Simétricos pela Norma CEI 909, 1996

Teaching methods and learning activities

•Theoretical classes: Use of transparencies / electronic documents. The exhibition is illustrated with the visualization of the equipments, whenever such it is possible.

•Practical classes: Resolution of problems belonging to a list previously distributed the students, design of electric diagrams, mount of small circuits.
Visits to a medium voltage switchgear installation and to a factory of electrical cables manufacturing.

Evaluation Type

Distributed evaluation with final exam

Assessment Components

Designation	Weight (%)
Exame	75,00
Teste	25,00
Total:	100,00

Amount of time allocated to each course unit

Designation	Time (hours)
Estudo autónomo	110,00
Frequência das aulas	52,00
Total:	162,00

Eligibility for exams

There are two evaluation components: a) Mini-test or individual work to be carried out in laboratory classes; b) Final exam.
The students must not exceed the absence limit established to the practical classes. These are the skills which are assessed: CDIO Syllabus- a) 1.2, 2.1; b) 1.2, 2.3; c) 1.2, 2.1, 2.3.

Calculation formula of final grade

CLASS_FINAL(NF) = 0,75 x CLASS_EXAM + 0,25 x CLASS_TEST.

Special assessment (TE, DA, ...)

Identical to the evaluation procedure established to the ordinary students.

Classification improvement

•CLASS_FINAL(NF) = 0,75 x CLASS_EXAM + 0,25 x CLASS_Test.

•Note: You can only improve the Test classification.

Observations

Note 1: Transparencies / electronic documents used on theorethical classes, are provided to students, covering most of the subjects. However, we recommend the consultation of the catalogs of manufacturers of electrical equipment. Note 2: There will be one study tour inside the campus of FEUP. These visit will take place during the practical sessions.