•   Electrical Networks ELA18EI04-3004 24.10.2022-18.12.2022  3 credits  (ELA20D-V) +-
    Competence objectives of the study unit
    Know the principles of different electricity prices and tariffs and be able to make simple cost estimates.
    Knowing the structure of electricity distribution networks.
    Understand and be able to calculate voltage drops, overloads, short circuits and various disturbances in the electricity grid.
    To be able to design conductors taking into account the permissible load, voltage drop and short-circuit resistance.
    To be able to calculate the need for phase compensation.
    To know the principle of different types of protection.
    To know and be able to describe different grounding systems.
    To be able to explain and calculate earth slopes in isolated networks.
    To know the methods for inspections, checks and measurements.
    Prerequisites
    Electrical safety and measurement technology
    Content of the study unit
    Electricity prices and different tariffs.
    Construction of electricity distribution networks.

    Voltage drop, overload, short circuit and various disturbances in the mains.
    Design of conductors.
    Phase compensation.
    The principle of different types of protection.
    Earthing systems
    Groundings in isolated grids.
    Inspections, checks and measurements.
    Assessment criteria
    Assessment criteria – satisfactory (1-2)
    Know the principles of electricity distribution.
    Knows about network construction and principle diagrams.
    Knows about the effect of the reactive power on the net.
    Can calculate electricity prices for ordinary consumers.
    Can calculate voltage drop in mains.
    Can measure ground resistance.
    Assessment criteria – good (3-4)
    Know the principles and methods of electricity distribution.
    Can design low voltage networks.
    Can calculate components for phase compensation.
    Can calculate electricity prices for ordinary and special consumers.
    Can calculate voltage drop and make judgments considering dimensions.
    Can account for different earthing and make measurements of earthing resistance.
    Understands the principles of earth fault protection in isolated networks.
    Assessment criteria – excellent (5)
    Know the principles and methods of electricity distribution.
    Can design low voltage networks.
    Can calculate components for phase compensation.
    Can calculate electricity prices for ordinary and special consumers.
    Can calculate voltage drop and make judgments considering dimensions.
    Can account for different earthing and make measurements of earthing resistance.
    Understands the principles of earth fault protection and can calculate earth fault currents and zero voltage at earth fault.
    Name of lecturer(s)

    Ronnie Sundsten

    Teaching language

    Swedish

    Timing

    24.10.2022 - 18.12.2022

    Enrollment date range

    15.06.2022 - 30.10.2022

    Group(s)
    • ELA20D-V
    Responsible unit

    Faculty of Technology and Seafaring

    Small group(s)
    • ELA20-V-K (Size: 20.
    Teachers and responsibilities

    Lars Enström

    Degree Programme(s)

    Degree Programme in Electrical Engineering and Automation

    Campus

    Vasa, Wolffskavägen 33

    Assessment scale

    H-5