Dataset for the article Early detection of PV fires on roofs using linear heat detectors This ReadMe file was created on 2026-03-18 by Nik Rus. ------------------- GENERAL INFORMATION ------------------- Dataset description: Dataset represents detection times measured by linear heat detector (LHD) cables in four experiments. The experiments represented roof segments equipped with photovoltaic (PV) modules that were during the experiments exposed to various ignition sources which lead to fire spreading across the surface of the roof. Author/lead researcher details Name and surname: Nik Rus ORCID: 0000-0002-3952-8959 SICRIS ID: 56822 Institution: Slovenian National Building and Civil Engineering Institute (ZAG) Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Institution: University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies Address: Glagoljaška 8, 6000 Koper, Slovenija Email: nik.rus@zag.si Role: Conceptualisation, Methodology, Investigation, Resources, Writing - Original Draft, Writing - Review & Editing Information about the author(s) Name and surname: Martin Košiček ORCID: 0000-0003-3066-4644 SICRIS ID: 52048 Institution: Slovenian National Building and Civil Engineering Institute (ZAG) Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Email: martin.kosicek@zag.si Role: Investigation, Writing - Review and Editing Name and surname: Andrea Jurov ORCID: 0000-0003-0590-2743 SICRIS ID: 58575 Institution: Slovenian National Building and Civil Engineering Institute (ZAG) Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Email: andrea.jurov@zag.si Role: Investigation, Writing - Review and Editing Name and surname: Kirils Simakovs ORCID: 0000-0002-1768-2007 SICRIS ID: 57890 Institution: Slovenian National Building and Civil Engineering Institute (ZAG) Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Email: kirils.simakovs@zag.si Role: Methodology, Investigation Name and surname: Grunde Jomaas ORCID: 0000-0003-4067-1610 SICRIS ID: 55980 Institution: Slovenian National Building and Civil Engineering Institute (ZAG) Address: Dimičeva ulica 12, 1000 Ljubljana, Slovenia Institution: University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies Address: Glagoljaška 8, 6000 Koper, Slovenija Email: nik.rus@zag.si Role: Conceptualisation, Methodology, Investigation, Resources, Writing - Original Draft, Writing - Review & Editing Date of data collection: from 2025-05-14 to 2025-05-16 Geographical location of data collection: 45°55'04.6"N 14°14'29.1"E Information on the funders/programmes/projects that made the data collection possible: The work was funded by the FRISSBE project, receiving funding from the European Union's Horizon 2020 research and innovation programme under Grant Agreement No. 952395. To ensure correct installation, some of the materials used were provided and managed during experiments by Thermocable (Flexible Elements) Ltd, UK. ----------------------------- SHARING/ACCESSING INFORMATION ----------------------------- Data licences/restrictions: CC-BY Links to publications that cite or use the data: -------------- DATA AND FILES -------------- File list: - Cable_detection_times_LHD-1-3 - Description: Data represents detection times after ignition of the sample for experiments LHD-1, LHD-2 and LHD-3. Data is related to: Figure 12. - Cable_detection_times_LHD-4 - Description: Data represents detection times after ignition of the sample for experiment LHD-4. Data is related to: Figure 12 -... Additional related data collected that were not included in this dataset: temperatures within the materials of the roof build-up. Version history of data: First version of data. -------------------------- METHODOLOGICAL INFORMATION -------------------------- Methods used to collect/obtain the data: Described in more detail within the section 2 Materials and Experimental Method. Data processing methods: N/A Software information: N/A ------------------------------------- DATA-SPECIFIC INFORMATION: [Cable_detection_times_LHD-1-3] ------------------------------------- List of variables: Detection time give in mm:ss format for various LHD cables and routing configurations. Detection time is measured from the start of the ignition source until a LHD cable gave signal about detection. In Cable_detection_times_LHD-1-3 3 mid-scale samples each with 1 PV module installed were equipped with 7 different LHD cables - more details about various cables is available in the article. Each cable was installed in two different routing configurations - long and short. Long means that the cable was installed passing each module twice, once on the lower backside and once on the higher backside. Short configuration passed the backside of the module only once across the middle of the module. ------------------------------------- DATA-SPECIFIC INFORMATION: [Cable_detection_times_LHD-4] ------------------------------------- List of variables: Detection time give in mm:ss format for various LHD cables. Detection time is measured from the start of the ignition source until a LHD cable gave signal about detection. In Cable_detection_times_LHD-4 one large-scale sample with 4 PV modules installed was equipped with 3 different LHD cables - more details about various cables is available in the article. Each LHD cable was installed on a separate PV module.