Abstract
The thesis presents the topic of electrical measurements of low-voltage installations. The main
purpose of the final work is to analyze and present the procedures and results of
measurements that ensure that electrical installations comply with safety, technical and
operational standards.
In Slovenia, the regulations for measurements are written in:
⁃ Rules on the requirements for low-voltage electrical installations in buildings (Official
Gazette of the Republic of Slovenia, No. 140/21),
⁃ Rules on the protection of buildings against lightning (Official Gazette of the Republic
of Slovenia, No. 140/21).
It should also be noted that both regulations are accompanied by two relevant technical
guidelines:
⁃ Technical guideline for construction TSG-N-002: 2021 Low-voltage electrical
installations,
⁃ Technical guideline for construction TSG-N-003: 2021 Protection against lightning.
As part of the task, a series of measurements were carried out throughout the entire apartment,
including checking insulation resistance, fault loop impedance, short-circuit loop impedance,
testing the RCD switch, and measuring surge protectors. The measurements were performed
using a modern Slovenian instrument (Metrel Eurotest XD), which is also described in the
chapter Description of used equipment. The measurements were carried out in accordance
with the document Low-voltage electrical installations and lightning protection, issued by the
Slovenian Electrotechnical Association. The document also contains the technical guideline
TSG-N-002 2021, which is a key part of the legislation. After the measurements, a report was
also prepared containing all the data and measured results.
The main purpose of this task is to present the topic of electrical measurements through the
eyes of a person who performs this work. It also aims to emphasize the role that
measurements play in ensuring safe use for every user.
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