Learning objectives
The aim of the course is to introduce the main aspects related to the protection and safety of electrical systems. It aims to provide basic electrotechnical knowledge to enable students to achieve a good level of competence in activities related to electrical risk assessment, distribution, and usage of electrical energy.
Specifically, the topics of device and personal protection will be introduced, contextualizing technical requirements in relation to environments and intended use.
A focus will be conducted on the protection of people from electric shocks, as well as the physiological and pathological effects.
The goal is to allow students to analyse and identify the most appropriate forms of protection from Direct and Indirect Contacts, also understanding the functionality and effectiveness of grounding systems through instrumental tests.
Prerequisites
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Course unit content
• General Concepts on Electrical Risk
• Basic Principles of Electrotechnics
• Legislative Responsibilities Related to Specific Risks (D.Lgs 81/08)
• Rationale for the Interconnection between Electrical Risk Assessment/Technical Standards
• Worker Training – Work Under Voltage (CEI 11-27)
• Introduction to DC and AC
• Electrical Distribution Systems (TT, TN, IT)
• Classification of Systems into Categories Referenced by Nominal Voltage - D.Lgs 81/08
• Transformer - Operation and Principles
• Safety Distances for "Non-Electrical" Work Near Electrical Lines
• Effects of Current on the Human Body
• Direct Contacts
• Insulation of Live Parts – Insulation Classes
• Extra Low Voltage Circuits (PELV, SELV, FELV)
• Barriers and Clearance
• Enclosures and Barriers – Degrees of Protection of Components
• Mandatory Degrees of Protection for Site Components
• Grounding System – Exposed-Conductive-Parts and Extraneous Conductive Parts
• Circuit Breaker – Overload – Overvoltage
• Indirect Contacts
• Residual Current Device
• Declaration of Conformity – Declaration of Compliance
• Reporting of Grounding System
• Periodic Inspections According to DPR 462/01
• Control Register
• Medical Classification of Rooms
• Phenomenology of Lightning, Risk Assessment, and Forms of Protection Against Lightning
Full programme
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Bibliography
• D.Lgs 81/08
• D.M. January 22, 2008, n.37
• CEI Standards and Guides contextualized to the topic
• D.P.R 462/01
Teaching methods
Lesson.
Case study.
Practical exercise.
Assessment methods and criteria
• Multiple-choice Test + Open-ended Questions
Other information
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2030 agenda goals for sustainable development
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