Publication in the Diário da República: Aviso n.º 23391/2023 de 4/12/2023
6 ECTS; 2º Ano, 1º Semestre, 48,0 TP , Cód. 616212.
Lecturer
- Mário Helder Rodrigues Gomes (1)(2)
(1) Docente Responsável
(2) Docente que lecciona
Prerequisites
Not applicable
Objectives
The objectives of this course are:
- Understand the importance of the standards and regulations applicable to electrical installations, the operation of electricity grids, and access to networks and interconnections;
- Understand and apply graphical representations of electrical safety (IE);
- Understand the operating principle of LV/MV protection and safety devices and know how to calculate current intensities in symmetrical faults;
- Size and select electrical piping and LV protection devices for overload and short-circuit situations and select electrical panels;
- Understand the operating principle and application of artificial lighting system devices and equipment and know how to size and design lighting installations;
- Understand the structure and operation of transformer stations and electrical substations and know how to size busbars and select associated equipment;
- Understand the operating conditions of electricity grids, as well as the requirements
Program
1- Current Standards and Regulations (RTIEBT, ROR, RARI)
2- Concepts of Electrical Installations (EI) (Constitution and characterization of EI, service means: equipment, switchgear, and feeders, methodologies for calculating and selecting service means, service and protective earthing, etc.)
3- Symbology and electrical diagrams (single-line, multi-line, functional, architectural, etc.)
4- Grounding (TT, TN, and IT connection diagrams, grounding and equipotential bonding systems, fundamentals of calculating/measuring grounding resistance)
5- LV and MV protection devices (Fuses, circuit breakers, residual current devices, disconnectors, etc.)
6- Calculation of symmetrical short-circuit currents (CEI 909) and voltage drops (exact and simplified)
7- Sizing of electrical feeders (Technical section method and economic method)
8- Artificial lighting (internal and external, lamps, luminaires and fixings, maintenance factors and reflection indices, luminous uniformity, calculation using the utilization factor method)
9- Transformation stations and power substations (construction, equipment characteristics, and sizing of busbars and support insulators)
Evaluation Methodology
The assessment for this course is 40% for a practical assignment (drawing, calculations, and equipment selection) and 60% for the written exam.
The minimum passing grade for this course is 47.5% (9.5 points).
Bibliography
- D.R. Decreto n.º 42895, . (1985). Regulamento de Segurança de Subestações e Postos de Transformação e de Seccionamento. Acedido em 13 de fevereiro de 2025 em https://diariodarepublica.pt/dr/detalhe/decreto/42895-1960-282328
- ERSE, . (2017). Regulamento de Acesso às Redes e às Interligações do Setor Elétrico . Acedido em 13 de fevereiro de 2025 em https://www.apren.pt/contents/legislation/cp61-rari-artconsolidado.pdf
- Morais, J. e Pereira, J. (2006). Guia Técnico das Instalações Elétricas. (Vol. 1). (pp. 1- ). ND: Certiel / ISBN-10:972-95180-3-3
- Pinto, V. (1999). MGCALC. (Vol. 1 e 2). (pp. 1- ). ND: Merlin Gerin / ISBN: 972-95831-1-0 (vol.1) e ISBN: 972-95831-0-2 (vol.2)
- RTIEBT, . (2006). Regras Técnicas das Instalações Eléctricas de Baixa Tensão. Acedido em 13 de fevereiro de 2025 em https://diariodarepublica.pt/dr/legislacao-consolidada/portaria/2006-70055500
- Solidal, . (2003). GUIA TÉCNICO de cabos eléctricos: SOLIDAL. (Vol. 1). (pp. 1-394). : SOLIDAL
Teaching Method
Theoretical and practical classes with explanation and application of associated concepts and exercise resolution; as well as monitoring of practical work with teacher supervision.
Software used in class
AutoCAD; Excell; Word; PowerPoint; WineLux.
